diff --git a/.gitignore b/.gitignore
index 39cfdaf840..6629b0283e 100644
--- a/.gitignore
+++ b/.gitignore
@@ -21,6 +21,7 @@ Gemfile.ci.lock
 
 public/avatars/**/*
 public/assets
+public/importers/
 
 tmp
 Design
@@ -37,3 +38,6 @@ Design
 
 .passenger
 .vagrant
+
+docker-compose.override.yml
+.local/
diff --git a/Dockerfile b/Dockerfile
index b84d416d1c..e55373aedf 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -20,7 +20,8 @@ RUN apt-get update && \
 	apt-get autoremove -y && \
 	cp config/database.postgres.docker.yml config/database.yml && \
 	gem install bundler && \
-	bundle install --deployment && \
+	bundle config set deployment 'true' && \
+	bundle install && \
 	bundle exec rails assets:precompile
 
 CMD ["bundle","exec","rails","s"]
diff --git a/Gemfile b/Gemfile
index 99a6106d07..d2e4040e13 100644
--- a/Gemfile
+++ b/Gemfile
@@ -100,3 +100,8 @@ gem "devise-encryptable"
 gem 'tzinfo-data', platforms: %i[mingw mswin x64_mingw jruby]
 gem 'activejob', '~> 5.2.0'
 gem 'ransack_ui', path: 'vendor/gems/ransack_ui-1.3.4' # Vendored until our fix is merged and released
+gem 'spreadsheet'
+
+gem "roo", "~> 2.8"
+
+gem "roo-xls", "~> 1.2"
diff --git a/Gemfile.lock b/Gemfile.lock
index e22d3ee844..c71acde36c 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -176,6 +176,7 @@ GEM
     jquery-ui-rails (6.0.1)
       railties (>= 3.2.16)
     libv8 (3.16.14.19)
+    libv8 (3.16.14.19-x86_64-linux)
     listen (3.2.1)
       rb-fsevent (~> 0.10, >= 0.10.3)
       rb-inotify (~> 0.9, >= 0.9.10)
@@ -302,6 +303,13 @@ GEM
       railties (>= 4.2.0, < 6.0)
     responds_to_parent (2.0.0)
       actionpack (>= 3.2.22, < 6.0)
+    roo (2.8.3)
+      nokogiri (~> 1)
+      rubyzip (>= 1.3.0, < 3.0.0)
+    roo-xls (1.2.0)
+      nokogiri
+      roo (>= 2.0.0, < 3)
+      spreadsheet (> 0.9.0)
     rspec (3.9.0)
       rspec-core (~> 3.9.0)
       rspec-expectations (~> 3.9.0)
@@ -334,6 +342,7 @@ GEM
       rainbow (>= 2.2.2, < 4.0)
       ruby-progressbar (~> 1.7)
       unicode-display_width (>= 1.4.0, < 1.7)
+    ruby-ole (1.2.12.2)
     ruby-progressbar (1.10.1)
     rubyzip (2.3.0)
     sass (3.7.4)
@@ -359,6 +368,8 @@ GEM
     sixarm_ruby_unaccent (1.2.0)
     sort_alphabetical (1.1.0)
       unicode_utils (>= 1.2.2)
+    spreadsheet (1.2.6)
+      ruby-ole (>= 1.0)
     sprockets (3.7.2)
       concurrent-ruby (~> 1.0)
       rack (> 1, < 3)
@@ -403,6 +414,7 @@ GEM
 
 PLATFORMS
   ruby
+  x86_64-linux
 
 DEPENDENCIES
   activejob (~> 5.2.0)
@@ -462,6 +474,8 @@ DEPENDENCIES
   rb-inotify
   responders (~> 2.0)
   responds_to_parent
+  roo (~> 2.8)
+  roo-xls (~> 1.2)
   rspec-activemodel-mocks
   rspec-rails
   rubocop (~> 0.76.0)
@@ -470,6 +484,7 @@ DEPENDENCIES
   select2-rails
   selenium-webdriver
   simple_form
+  spreadsheet
   sprockets-rails (>= 3.0.0)
   sqlite3 (~> 1.3.13)
   therubyracer
@@ -482,4 +497,4 @@ DEPENDENCIES
   zeus
 
 BUNDLED WITH
-   2.1.4
+   2.2.2
diff --git a/app/controllers/importers_controller.rb b/app/controllers/importers_controller.rb
new file mode 100644
index 0000000000..feb4481771
--- /dev/null
+++ b/app/controllers/importers_controller.rb
@@ -0,0 +1,186 @@
+# frozen_string_literal: true
+
+# Copyright (c) 2008-2013 Michael Dvorkin and contributors.
+#
+# Fat Free CRM is freely distributable under the terms of MIT license.
+# See MIT-LICENSE file or http://www.opensource.org/licenses/mit-license.php
+#------------------------------------------------------------------------------
+
+require 'json'
+
+class ImportersController < ApplicationController
+  # get /importers/new                                                 AJAX
+  #----------------------------------------------------------------------------
+  def new
+    @importer = Importer.new
+    @importer.entity_type = params[:entity_type]
+    @importer.entity_id = params[:entity_id] if params[:entity_id]
+    respond_with(@importer)
+  end
+
+  # post /importers/create
+  #----------------------------------------------------------------------------
+  def create
+    errors = false
+    if params[:importer]
+      @importer = Importer.create(importer_params)
+      if @importer.valid?
+        @importer.save
+      else
+        errors = @importer.errors.full_messages
+      end
+    end
+
+    respond_to do |format|
+      if errors
+        format.html { render "create", locals: { errors: errors } }
+      else
+        format.html { redirect_to form_map_columns_importer_path(@importer) }
+      end
+    end
+  end
+
+  # get /importers/:id/map
+  #----------------------------------------------------------------------------
+  def form_map_columns
+    @importer = Importer.find(params[:id])
+    columns = FatFreeCRM::ImportHandle.get_columns(@importer.attachment.path)
+
+    attributes = []
+    attributes_extra = []
+
+    object = @importer.entity_class
+    attrs = object.attribute_names - ['id']
+
+    attrs.each do |attr|
+      attributes.push(
+        name: attr,
+          required: object.validators_on(attr).any? { |v| v.is_a? ActiveModel::Validations::PresenceValidator }
+      )
+    end
+
+    if @importer.entity_type == 'lead'
+      attrs = Address.attribute_names - %w[id created_at updated_at deleted_at address_type addressable_type addressable_id]
+
+      attrs.each do |attr|
+        attributes_extra.push(
+          name: attr,
+            required: Address.validators_on(attr).any? { |v| v.is_a? ActiveModel::Validations::PresenceValidator }
+        )
+      end
+    end
+
+    respond_to do |format|
+      format.html { render "form_map_columns", locals: { columns: columns, attributes: attributes, attributes_extra: attributes_extra } }
+    end
+  end
+
+  # post /importers/:id/map
+  #----------------------------------------------------------------------------
+  def map_columns
+    @importer = Importer.find(params[:id])
+    @importer.status = :map
+    map = params[:map]
+    @importer.map = map.to_json
+    @importer.save
+    @importer = FatFreeCRM::ImportHandle.process(@importer)
+
+    respond_to do |format|
+      format.html { render "map_columns" }
+    end
+  end
+
+  #   # get /campaigns/import                                                 AJAX
+  #   #----------------------------------------------------------------------------
+  #   def import
+  #     @importer = Importer.new
+  #     @importer.entity_type = 'Campaign'
+  #     respond_with(@importer)
+  #   end
+  #
+  #   # patch /campaigns/import                                                 AJAX
+  #   #----------------------------------------------------------------------------
+  #   def import_upload
+  #     @error = false
+  #     @result = {
+  #         items: [],
+  #         errors: []
+  #     }
+  #
+  #     if params[:importer]
+  #       @importer = Importer.create(import_params)
+  #       if @importer.valid?
+  #         @importer.save
+  #         @result = FatFreeCRM::ImportHandle.process(@importer)
+  #       else
+  #         puts @importer.errors.full_messages
+  #         @result[:errors].push(@importer.errors.full_messages)
+  #         @error = true
+  #       end
+  #     end
+  #     respond_with(@error,@result)
+  #   end
+  #
+  #
+  #   # get /campaigns/%id/import                                                 AJAX
+  #   #----------------------------------------------------------------------------
+  #   def import_leads
+  #     @importer = Importer.new
+  #     @importer.entity_type = 'Lead'
+  #     respond_with(@importer)
+  #   end
+  #
+  #   # patch /campaigns/import                                                 AJAX
+  #   #----------------------------------------------------------------------------
+  #   def uploads_import_leads
+  #     @error = false
+  #     @result = {
+  #         items: [],
+  #         errors: []
+  #     }
+  #
+  #     if params[:importer]
+  #       @importer = Importer.create(import_params)
+  #       if @importer.valid?
+  #         @importer.save
+  #         @colummns = FatFreeCRM::ImportHandle.get_columns(@importer.attachment.path)
+  #       else
+  #         puts @importer.errors.full_messages
+  #         @result[:errors].push(@importer.errors.full_messages)
+  #         @error = true
+  #       end
+  #     end
+  #     respond_with(@colummns) do |format|
+  #       format.js { render :uploads_import_leads }
+  #     end
+  #   end
+  #
+  # post /importers/create
+  #----------------------------------------------------------------------------
+  #   def create
+  #     @error = false
+  #     @result = {
+  #         items: [],
+  #         errors: []
+  #     }
+  #
+  #     if params[:importer]
+  #       @importer = Importer.create(import_params)
+  #       if @importer.valid?
+  #         @importer.save
+  #        @result = FatFreeCRM::ImportHandle.process(@importer)
+  #       else
+  #         puts @importer.errors.full_messages
+  #         @result[:errors].push(@importer.errors.full_messages)
+  #         @error = true
+  #       end
+  #     end
+  #     respond_with(@error,@result)
+  #   end
+
+  private
+
+  def importer_params
+    params.require(:importer).permit(:attachment, :entity_type, :entity_id)
+  end
+end
diff --git a/app/models/files/imported_file.rb b/app/models/files/imported_file.rb
new file mode 100644
index 0000000000..f0c019dd8e
--- /dev/null
+++ b/app/models/files/imported_file.rb
@@ -0,0 +1,45 @@
+# frozen_string_literal: true
+
+# Copyright (c) 2008-2013 Michael Dvorkin and contributors.
+#
+# Fat Free CRM is freely distributable under the terms of MIT license.
+# See MIT-LICENSE file or http://www.opensource.org/licenses/mit-license.php
+#------------------------------------------------------------------------------
+# == Schema Information
+#
+# Table name: imported_files
+#
+#  id              :integer         not null, primary key
+#  filename        :string(64)      default(""), not null
+#  md5sum          :string(32)      default(""), not null
+#
+
+class ImportedFile < ActiveRecord::Base
+  before_validation :generate_md5sum
+
+  validate  :filetype
+
+  validates :filename, presence: true
+  validates :md5sum, presence: true
+  validates :md5sum, uniqueness: { message: "file already imported" }
+
+  def generate_md5sum
+    self.md5sum = Digest::MD5.hexdigest File.open(filename).read unless filename.empty?
+  rescue StandardError
+    ""
+  end
+
+  private
+
+  def filetype
+    valid = begin
+              File.open(filename).type_from_file_command == "application/vnd.ms-excel"
+            rescue StandardError
+              ""
+            end
+    errors.add(:filename, "no such file") if valid == ""
+    errors.add(:filename, "invalid filetype") unless valid
+  end
+
+  ActiveSupport.run_load_hooks(:fat_free_crm_imported_file, self)
+end
diff --git a/app/models/files/importer.rb b/app/models/files/importer.rb
new file mode 100644
index 0000000000..1c04f94dea
--- /dev/null
+++ b/app/models/files/importer.rb
@@ -0,0 +1,39 @@
+# frozen_string_literal: true
+
+# == Schema Information
+#
+# Table name: importers
+#
+#  id                       :integer         not null, primary key
+#  entity_type              :string
+#  entity_id                :integer
+#  attachment_file_size    :integer
+#  attachment_file_name    :string(255)
+#  attachment_content_type :string(255)
+#  status                  :string(255)
+#  created_at              :datetime
+#  updated_at              :datetime
+#
+require 'json'
+class Importer < ActiveRecord::Base
+  attribute :entity_attrs
+
+  has_attached_file :attachment, path: ":rails_root/public/importers/:id/:filename"
+
+  validates_attachment :attachment, presence: true
+
+  validates_attachment_content_type :attachment,
+                                    content_type: %w[text/xml application/xml application/vnd.ms-excel application/vnd.openxmlformats-officedocument.spreadsheetml.sheet application/x-ole-storage],
+                                    message: 'Only EXCEL files are allowed.'
+  validates_attachment_file_name :attachment, matches: [/\.xls/, /\.xlsx?$/]
+
+  def messages
+    JSON.parse(messages)
+  end
+
+  def entity_class
+    entity_type.capitalize.constantize
+  end
+
+  ActiveSupport.run_load_hooks(:fat_free_crm_importer, self)
+end
diff --git a/app/views/campaigns/_list_title_bar.html.haml b/app/views/campaigns/_list_title_bar.html.haml
new file mode 100644
index 0000000000..3de3f01ab6
--- /dev/null
+++ b/app/views/campaigns/_list_title_bar.html.haml
@@ -0,0 +1,14 @@
+- model_name = controller_name.singularize
+- model_klass = model_name.camelcase.constantize
+
+.title_tools
+  #buttons
+    = view_buttons
+  .create_asset
+    = link_to_inline("create_#{model_name}".to_sym, send("new_#{model_name}_path"), text: t("create_#{model_name}".to_sym))
+  .create_asset
+    = link_to_inline(:new_importer, new_importer_path(:campaign), text: t(:import_campaigns))
+
+.title
+  %span{id: "create_#{model_name}_title"} #{t controller_name.to_sym}
+  = image_tag("loading.gif", size: :thumb, id: "loading", style: "display: none;")
diff --git a/app/views/campaigns/_title_bar.html.haml b/app/views/campaigns/_title_bar.html.haml
index 3933786f88..1a2013aeed 100644
--- a/app/views/campaigns/_title_bar.html.haml
+++ b/app/views/campaigns/_title_bar.html.haml
@@ -1,7 +1,9 @@
 #confirm{ hidden }
 .title_tools#menu
   = link_to_inline(:edit_campaign, edit_campaign_path(@campaign), text: t(:edit)) + " | "
-  = link_to_function(t(:delete) + '?', confirm_delete(@campaign))
+  = link_to_function(t(:delete) + '?', confirm_delete(@campaign)) + " | "
+  = link_to_inline(:new_importer, new_importer_path(:lead,@campaign), text: t(:import_leads))
+
 .title_tools#buttons
   = view_buttons
 .title#edit_campaign_title
diff --git a/app/views/campaigns/index.html.haml b/app/views/campaigns/index.html.haml
index 9f1c71384a..5318765377 100644
--- a/app/views/campaigns/index.html.haml
+++ b/app/views/campaigns/index.html.haml
@@ -1,8 +1,9 @@
 = styles_for :campaign
 
-= render 'entities/title_bar'
+= render 'list_title_bar'
 
 .remote#create_campaign{ hidden }
+.remote#new_importer{ hidden }
 
 = render 'search'
 
diff --git a/app/views/campaigns/show.html.haml b/app/views/campaigns/show.html.haml
index 10f3396cd7..9a26c92c3d 100755
--- a/app/views/campaigns/show.html.haml
+++ b/app/views/campaigns/show.html.haml
@@ -9,6 +9,8 @@
   = render 'campaigns/title_bar', campaign: @campaign
 
   = render "comments/new", commentable: @campaign
+  .remote#new_importer{ hidden }
+
   = render partial: "shared/timeline", collection: @timeline
 
   = hook(:show_campaign_bottom, self, {entity: @campaign}) do
diff --git a/app/views/importers/_new.html.haml b/app/views/importers/_new.html.haml
new file mode 100644
index 0000000000..0f36895ea4
--- /dev/null
+++ b/app/views/importers/_new.html.haml
@@ -0,0 +1,13 @@
+= form_for(@importer, url: create_importer_path, html:{ multipart: true}) do |f|
+  = f.hidden_field :entity_type
+  - if @importer.entity_id
+    = f.hidden_field :entity_id
+  %p
+    %small #{t :importer_description}
+
+  %div #{t :xls_file}
+  = fields_for(Importer) do |a|
+    %div= a.file_field :attachment
+
+  .buttonbar
+    = f.submit t(:upload_file)
\ No newline at end of file
diff --git a/app/views/importers/create.html.haml b/app/views/importers/create.html.haml
new file mode 100644
index 0000000000..ab6924e17a
--- /dev/null
+++ b/app/views/importers/create.html.haml
@@ -0,0 +1,5 @@
+- if errors
+  - errors.each do |error|
+    .flash_error #{ error }
+- else
+  #{ render(partial: "map_columns" ) }
\ No newline at end of file
diff --git a/app/views/importers/form_map_columns.html.haml b/app/views/importers/form_map_columns.html.haml
new file mode 100644
index 0000000000..6f41028a9f
--- /dev/null
+++ b/app/views/importers/form_map_columns.html.haml
@@ -0,0 +1,45 @@
+= form_for(@importer, url: map_columns_importer_path(@importer), html: { method: :post }) do |f|
+  = f.hidden_field :id
+
+  %p #{t :map_columns_description}
+
+  %div
+    %table
+      - attributes.each do |attr|
+        %tr
+          %td
+            .label
+              #{ attr[:name] }
+              - if attr[:required]
+                %span.warn *
+          %td
+            = select_tag "map[#{ attr[:name] }]",
+            options_for_select(columns),
+            class: 'select2',
+            include_blank: true,
+            data: {placeholder: t(:select_blank)},
+            required: attr[:required],
+            id: "map_#{ attr[:name] }"
+
+  - if attributes_extra.length
+    %div.subtitle
+      #{t :address}
+    %table
+      - attributes_extra.each do |attr|
+        %tr
+          %td
+            .label
+              #{ attr[:name] }
+              - if attr[:required]
+                %span.warn *
+          %td
+            = select_tag "map[business_address_attributes][#{ attr[:name] }]",
+            options_for_select(columns),
+            class: 'select2',
+            include_blank: true,
+            data: {placeholder: t(:select_blank)},
+            required: attr[:required],
+            id: "map_#{ attr[:name] }"
+
+  .buttonbar
+    = f.submit t(:save)
diff --git a/app/views/importers/map_columns.html.haml b/app/views/importers/map_columns.html.haml
new file mode 100644
index 0000000000..78e1bc2c80
--- /dev/null
+++ b/app/views/importers/map_columns.html.haml
@@ -0,0 +1,4 @@
+%div #{t :importer_status_label } #{ @importer.status }
+- @importer.messages.each do |message|
+  %div #{message}
+
diff --git a/app/views/importers/new.js.haml b/app/views/importers/new.js.haml
new file mode 100644
index 0000000000..f6e50ef2e0
--- /dev/null
+++ b/app/views/importers/new.js.haml
@@ -0,0 +1,6 @@
+- _id = "new_importer"
+
+crm.flick('empty', 'toggle');
+crm.flip_form('#{_id}');
+$('##{_id}').html('#{ j render(partial: "new" ) }');
+crm.set_title('#{_id}', '#{ j t(_id) }');
diff --git a/config/initializers/file.rb b/config/initializers/file.rb
new file mode 100644
index 0000000000..05a84dd024
--- /dev/null
+++ b/config/initializers/file.rb
@@ -0,0 +1,23 @@
+# frozen_string_literal: true
+
+# Copyright (c) 2008-2013 Michael Dvorkin and contributors.
+#
+# Fat Free CRM is freely distributable under the terms of MIT license.
+# See MIT-LICENSE file or http://www.opensource.org/licenses/mit-license.php
+#------------------------------------------------------------------------------
+File.class_eval do
+  def type_from_file_command
+    type = (begin
+              original_filename.match(/\.(\w+)$/)[1]
+            rescue StandardError
+              "octet-stream"
+            end).downcase
+    mime_type = begin
+                  `file -b --mime-type #{path}`.split(':').last.strip
+                rescue StandardError
+                  "application/x-#{type}"
+                end
+    mime_type = "application/x-#{type}" if mime_type.match(/\(.*?\)/)
+    mime_type
+  end
+end
diff --git a/config/initializers/paperclip.rb b/config/initializers/paperclip.rb
new file mode 100644
index 0000000000..e595b45f59
--- /dev/null
+++ b/config/initializers/paperclip.rb
@@ -0,0 +1,9 @@
+# frozen_string_literal: true
+
+module Paperclip
+  class MediaTypeSpoofDetector
+    def spoofed?
+      false
+    end
+  end
+end
diff --git a/config/locales/fat_free_crm.en-US.yml b/config/locales/fat_free_crm.en-US.yml
index c2484983dc..38cb857c00 100644
--- a/config/locales/fat_free_crm.en-US.yml
+++ b/config/locales/fat_free_crm.en-US.yml
@@ -937,3 +937,16 @@ en-US:
     from_to: From %{from} to %{to}
     from_only: From %{from}
     to_only: Until %{to}
+
+
+  # Import from excel
+  #----------------------------------------------------------------------------
+  import_campaigns: Import Campaigns
+  import_leads: Import Leads
+  import_leads_help: Todo help for import leads from excel
+  xls_file: EXCEL File
+  upload_file: Upload file
+  save: Save
+  importer_description: Upload excel file to import its content to the databases. Only valid excel files are allowed.
+  map_columns_description: Link the excel column that corresponds to each attribute or leave it blank. The elements with * must have a value in the column that is selected.
+  importer_status_label: Status
\ No newline at end of file
diff --git a/config/locales/fat_free_crm.es.yml b/config/locales/fat_free_crm.es.yml
index cd3f805867..9a45704039 100644
--- a/config/locales/fat_free_crm.es.yml
+++ b/config/locales/fat_free_crm.es.yml
@@ -916,3 +916,15 @@ es:
     from_to: De %{from} a %{to}
     from_only: De %{from}
     to_only: Antes de %{to}
+
+  # Import from excel
+  #----------------------------------------------------------------------------
+  import_campaigns: Importar Campañas
+  import_leads: Importar clientes potenciales
+  import_leads_help: Todo help for import leads from excel
+  xls_file: Fichero EXCEL
+  upload_file: Subir fichero
+  save: Guardar
+  importer_description: Subir fichero excel para importar su contenido a las base de datos. Solo se admiten fichero excel validos.
+  map_columns_description: Enlazar la columna del excel que le corresponde a cada atributo o dejar en blanco. Los elementos con * tienen que tener valor en la columna que se seleccione.
+  importer_status_label: Estado
diff --git a/config/routes.rb b/config/routes.rb
index 1efaac95b3..9071fa58ed 100644
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -209,4 +209,9 @@
     resources :settings, only: :index
     resources :plugins,  only: :index
   end
+
+  get 'importers/new/:entity_type(/:entity_id)' => 'importers#new', as: :new_importer
+  post 'importers' => 'importers#create', as: :create_importer
+  get 'importers/:id/map' => 'importers#form_map_columns', as: :form_map_columns_importer
+  post 'importers/:id/map' => 'importers#map_columns', as: :map_columns_importer
 end
diff --git a/db/migrate/20201103150431_create_imported_files.rb b/db/migrate/20201103150431_create_imported_files.rb
new file mode 100644
index 0000000000..25af1acb8a
--- /dev/null
+++ b/db/migrate/20201103150431_create_imported_files.rb
@@ -0,0 +1,16 @@
+# frozen_string_literal: true
+
+class CreateImportedFiles < ActiveRecord::Migration[4.2]
+  def self.up
+    create_table :imported_files, force: true do |t|
+      t.string :filename,  limit: 64, null: false, default: ""
+      t.string :md5sum,    limit: 32, null: false, default: ""
+
+      t.timestamps
+    end
+  end
+
+  def self.down
+    drop_table :imported_files
+  end
+end
diff --git a/db/migrate/20201217030615_create_importers.rb b/db/migrate/20201217030615_create_importers.rb
new file mode 100644
index 0000000000..e77f7b7777
--- /dev/null
+++ b/db/migrate/20201217030615_create_importers.rb
@@ -0,0 +1,21 @@
+# frozen_string_literal: true
+
+class CreateImporters < ActiveRecord::Migration[4.2]
+  def self.up
+    create_table :importers do |t|
+      t.integer :attachment_file_size # Uploaded file size
+      t.string :attachment_file_name, null: false # Uploaded full file name
+      t.string :attachment_content_type # MIME content type
+      t.string :entity_type, null: false # led, campaign
+      t.string :entity_id # led, campaign
+      t.string :status, null: false, default: :new # new, map , imported , error
+      t.text :map
+      t.text :messages
+      t.timestamps
+    end
+  end
+
+  def self.down
+    drop_table :importers
+  end
+end
diff --git a/db/schema.rb b/db/schema.rb
index 9fff439ce9..ce7a36775c 100644
--- a/db/schema.rb
+++ b/db/schema.rb
@@ -10,9 +10,9 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema.define(version: 2018_01_07_082701) do
+ActiveRecord::Schema.define(version: 2020_12_17_030615) do
 
-  create_table "account_contacts", force: :cascade do |t|
+  create_table "account_contacts", id: :serial, force: :cascade do |t|
     t.integer "account_id"
     t.integer "contact_id"
     t.datetime "deleted_at"
@@ -21,7 +21,7 @@
     t.index ["account_id", "contact_id"], name: "index_account_contacts_on_account_id_and_contact_id"
   end
 
-  create_table "account_opportunities", force: :cascade do |t|
+  create_table "account_opportunities", id: :serial, force: :cascade do |t|
     t.integer "account_id"
     t.integer "opportunity_id"
     t.datetime "deleted_at"
@@ -30,7 +30,7 @@
     t.index ["account_id", "opportunity_id"], name: "index_account_opportunities_on_account_id_and_opportunity_id"
   end
 
-  create_table "accounts", force: :cascade do |t|
+  create_table "accounts", id: :serial, force: :cascade do |t|
     t.integer "user_id"
     t.integer "assigned_to"
     t.string "name", limit: 64, default: "", null: false
@@ -53,7 +53,7 @@
     t.index ["user_id", "name", "deleted_at"], name: "index_accounts_on_user_id_and_name_and_deleted_at", unique: true
   end
 
-  create_table "activities", force: :cascade do |t|
+  create_table "activities", id: :serial, force: :cascade do |t|
     t.integer "user_id"
     t.string "subject_type"
     t.integer "subject_id"
@@ -66,7 +66,7 @@
     t.index ["user_id"], name: "index_activities_on_user_id"
   end
 
-  create_table "addresses", force: :cascade do |t|
+  create_table "addresses", id: :serial, force: :cascade do |t|
     t.string "street1"
     t.string "street2"
     t.string "city", limit: 64
@@ -83,7 +83,7 @@
     t.index ["addressable_id", "addressable_type"], name: "index_addresses_on_addressable_id_and_addressable_type"
   end
 
-  create_table "avatars", force: :cascade do |t|
+  create_table "avatars", id: :serial, force: :cascade do |t|
     t.integer "user_id"
     t.string "entity_type"
     t.integer "entity_id"
@@ -94,7 +94,7 @@
     t.datetime "updated_at"
   end
 
-  create_table "campaigns", force: :cascade do |t|
+  create_table "campaigns", id: :serial, force: :cascade do |t|
     t.integer "user_id"
     t.integer "assigned_to"
     t.string "name", limit: 64, default: "", null: false
@@ -119,7 +119,7 @@
     t.index ["user_id", "name", "deleted_at"], name: "index_campaigns_on_user_id_and_name_and_deleted_at", unique: true
   end
 
-  create_table "comments", force: :cascade do |t|
+  create_table "comments", id: :serial, force: :cascade do |t|
     t.integer "user_id"
     t.string "commentable_type"
     t.integer "commentable_id"
@@ -131,7 +131,7 @@
     t.string "state", limit: 16, default: "Expanded", null: false
   end
 
-  create_table "contact_opportunities", force: :cascade do |t|
+  create_table "contact_opportunities", id: :serial, force: :cascade do |t|
     t.integer "contact_id"
     t.integer "opportunity_id"
     t.string "role", limit: 32
@@ -141,7 +141,7 @@
     t.index ["contact_id", "opportunity_id"], name: "index_contact_opportunities_on_contact_id_and_opportunity_id"
   end
 
-  create_table "contacts", force: :cascade do |t|
+  create_table "contacts", id: :serial, force: :cascade do |t|
     t.integer "user_id"
     t.integer "lead_id"
     t.integer "assigned_to"
@@ -173,7 +173,7 @@
     t.index ["user_id", "last_name", "deleted_at"], name: "id_last_name_deleted", unique: true
   end
 
-  create_table "emails", force: :cascade do |t|
+  create_table "emails", id: :serial, force: :cascade do |t|
     t.string "imap_message_id", null: false
     t.integer "user_id"
     t.string "mediator_type"
@@ -194,7 +194,7 @@
     t.index ["mediator_id", "mediator_type"], name: "index_emails_on_mediator_id_and_mediator_type"
   end
 
-  create_table "field_groups", force: :cascade do |t|
+  create_table "field_groups", id: :serial, force: :cascade do |t|
     t.string "name", limit: 64
     t.string "label", limit: 128
     t.integer "position"
@@ -205,7 +205,7 @@
     t.string "klass_name", limit: 32
   end
 
-  create_table "fields", force: :cascade do |t|
+  create_table "fields", id: :serial, force: :cascade do |t|
     t.string "type"
     t.integer "field_group_id"
     t.integer "position"
@@ -217,17 +217,17 @@
     t.text "collection"
     t.boolean "disabled"
     t.boolean "required"
-    t.integer "maxlength", limit: 4
+    t.integer "maxlength"
     t.datetime "created_at"
     t.datetime "updated_at"
     t.integer "pair_id"
     t.text "settings"
-    t.integer "minlength", limit: 4, default: 0
+    t.integer "minlength", default: 0
     t.index ["field_group_id"], name: "index_fields_on_field_group_id"
     t.index ["name"], name: "index_fields_on_name"
   end
 
-  create_table "groups", force: :cascade do |t|
+  create_table "groups", id: :serial, force: :cascade do |t|
     t.string "name"
     t.datetime "created_at"
     t.datetime "updated_at"
@@ -241,7 +241,27 @@
     t.index ["user_id"], name: "index_groups_users_on_user_id"
   end
 
-  create_table "leads", force: :cascade do |t|
+  create_table "imported_files", id: :serial, force: :cascade do |t|
+    t.string "filename", limit: 64, default: "", null: false
+    t.string "md5sum", limit: 32, default: "", null: false
+    t.datetime "created_at"
+    t.datetime "updated_at"
+  end
+
+  create_table "importers", id: :serial, force: :cascade do |t|
+    t.integer "attachment_file_size"
+    t.string "attachment_file_name", null: false
+    t.string "attachment_content_type"
+    t.string "entity_type", null: false
+    t.string "entity_id"
+    t.string "status", default: "new", null: false
+    t.text "map"
+    t.text "messages"
+    t.datetime "created_at"
+    t.datetime "updated_at"
+  end
+
+  create_table "leads", id: :serial, force: :cascade do |t|
     t.integer "user_id"
     t.integer "campaign_id"
     t.integer "assigned_to"
@@ -273,7 +293,7 @@
     t.index ["user_id", "last_name", "deleted_at"], name: "index_leads_on_user_id_and_last_name_and_deleted_at", unique: true
   end
 
-  create_table "lists", force: :cascade do |t|
+  create_table "lists", id: :serial, force: :cascade do |t|
     t.string "name"
     t.text "url"
     t.datetime "created_at"
@@ -282,7 +302,7 @@
     t.index ["user_id"], name: "index_lists_on_user_id"
   end
 
-  create_table "opportunities", force: :cascade do |t|
+  create_table "opportunities", id: :serial, force: :cascade do |t|
     t.integer "user_id"
     t.integer "campaign_id"
     t.integer "assigned_to"
@@ -303,7 +323,7 @@
     t.index ["user_id", "name", "deleted_at"], name: "id_name_deleted", unique: true
   end
 
-  create_table "permissions", force: :cascade do |t|
+  create_table "permissions", id: :serial, force: :cascade do |t|
     t.integer "user_id"
     t.string "asset_type"
     t.integer "asset_id"
@@ -315,7 +335,7 @@
     t.index ["user_id"], name: "index_permissions_on_user_id"
   end
 
-  create_table "preferences", force: :cascade do |t|
+  create_table "preferences", id: :serial, force: :cascade do |t|
     t.integer "user_id"
     t.string "name", limit: 32, default: "", null: false
     t.text "value"
@@ -324,7 +344,7 @@
     t.index ["user_id", "name"], name: "index_preferences_on_user_id_and_name"
   end
 
-  create_table "sessions", force: :cascade do |t|
+  create_table "sessions", id: :serial, force: :cascade do |t|
     t.string "session_id", null: false
     t.text "data"
     t.datetime "created_at"
@@ -333,7 +353,7 @@
     t.index ["updated_at"], name: "index_sessions_on_updated_at"
   end
 
-  create_table "settings", force: :cascade do |t|
+  create_table "settings", id: :serial, force: :cascade do |t|
     t.string "name", limit: 32, default: "", null: false
     t.text "value"
     t.datetime "created_at"
@@ -341,7 +361,7 @@
     t.index ["name"], name: "index_settings_on_name"
   end
 
-  create_table "taggings", force: :cascade do |t|
+  create_table "taggings", id: :serial, force: :cascade do |t|
     t.integer "tag_id"
     t.integer "taggable_id"
     t.integer "tagger_id"
@@ -353,13 +373,13 @@
     t.index ["taggable_id", "taggable_type", "context"], name: "index_taggings_on_taggable_id_and_taggable_type_and_context"
   end
 
-  create_table "tags", force: :cascade do |t|
+  create_table "tags", id: :serial, force: :cascade do |t|
     t.string "name"
     t.integer "taggings_count", default: 0
     t.index ["name"], name: "index_tags_on_name", unique: true
   end
 
-  create_table "tasks", force: :cascade do |t|
+  create_table "tasks", id: :serial, force: :cascade do |t|
     t.integer "user_id"
     t.integer "assigned_to"
     t.integer "completed_by"
@@ -380,7 +400,7 @@
     t.index ["user_id", "name", "deleted_at"], name: "index_tasks_on_user_id_and_name_and_deleted_at", unique: true
   end
 
-  create_table "users", force: :cascade do |t|
+  create_table "users", id: :serial, force: :cascade do |t|
     t.string "username", limit: 32, default: "", null: false
     t.string "email", limit: 254, default: "", null: false
     t.string "first_name", limit: 32
@@ -423,7 +443,7 @@
     t.index ["username", "deleted_at"], name: "index_users_on_username_and_deleted_at", unique: true
   end
 
-  create_table "versions", force: :cascade do |t|
+  create_table "versions", id: :serial, force: :cascade do |t|
     t.string "item_type", null: false
     t.integer "item_id", null: false
     t.string "event", limit: 512, null: false
diff --git a/lib/fat_free_crm.rb b/lib/fat_free_crm.rb
index 741b011274..0e74ebe027 100644
--- a/lib/fat_free_crm.rb
+++ b/lib/fat_free_crm.rb
@@ -52,6 +52,7 @@ def application?
 require "fat_free_crm/tabs"
 require "fat_free_crm/callback"
 require "fat_free_crm/view_factory"
+require "fat_free_crm/import_handle"
 
 require "activemodel-serializers-xml"
 require "country_select"
diff --git a/lib/fat_free_crm/import_handle.rb b/lib/fat_free_crm/import_handle.rb
new file mode 100644
index 0000000000..26b31170b9
--- /dev/null
+++ b/lib/fat_free_crm/import_handle.rb
@@ -0,0 +1,82 @@
+# frozen_string_literal: true
+
+# Copyright (c) 2008-2013 Michael Dvorkin and contributors.
+#
+# Fat Free CRM is freely distributable under the terms of MIT license.
+# See MIT-LICENSE file or http://www.opensource.org/licenses/mit-license.php
+#------------------------------------------------------------------------------
+require 'roo'
+require 'json'
+
+module FatFreeCRM
+  class ImportHandle
+    class << self
+      def get_columns(path)
+        headers = {}
+        xlsx = Roo::Spreadsheet.open(path)
+        sheet = xlsx.sheet(0)
+        sheet.row(1).each_with_index do |header, i|
+          headers[header] = i
+        end
+        headers
+      end
+
+      def get_values(map, sheet, row)
+        values = {}
+        map.each do |att, i|
+          if i.is_a?(Hash)
+            values[att] = get_values(i, sheet, row)
+          elsif !i.empty? && (i.to_i >= 0)
+            value = sheet.row(row)[i.to_i]
+            values[att] = value
+          end
+        end
+
+        values
+      end
+
+      def process(importer)
+        errors = []
+        map = JSON.parse(importer.map)
+        xlsx = Roo::Spreadsheet.open(importer.attachment.path)
+
+        xlsx.each_with_pagename do |_name, sheet|
+          ((sheet.first_row + 1)..sheet.last_row).each do |row|
+            values = get_values(map, sheet, row)
+
+            # TODO: Do this more geneic
+            business_address_attributes = {}
+            if importer.entity_type == 'lead'
+              values[:campaign_id] = importer.entity_id
+              business_address_attributes = values.delete('business_address_attributes') if values.key?('business_address_attributes')
+            end
+
+            item = importer.entity_type.capitalize.constantize.create(values)
+            if item.valid?
+              item.save
+              if importer.entity_type == 'lead'
+                business_address_attributes["address_type"] = "Business"
+                business_address_attributes["addressable_type"] = "Lead"
+                business_address_attributes["addressable_id"] = item.id
+                address = Address.create(business_address_attributes)
+                address.save
+              end
+            else
+              errors << item.errors.full_messages
+            end
+          end
+        end
+
+        if errors.empty?
+          importer.status = :imported
+        else
+          importer.status = :error
+          importer.messages = errors.to_json
+        end
+        importer.save
+
+        importer
+      end
+    end
+  end
+end
diff --git a/spec/factories/imported_files.rb b/spec/factories/imported_files.rb
new file mode 100644
index 0000000000..aea1e9c6d3
--- /dev/null
+++ b/spec/factories/imported_files.rb
@@ -0,0 +1,13 @@
+# frozen_string_literal: true
+
+# Copyright (c) 2008-2013 Michael Dvorkin and contributors.
+#
+# Fat Free CRM is freely distributable under the terms of MIT license.
+# See MIT-LICENSE file or http://www.opensource.org/licenses/mit-license.php
+#------------------------------------------------------------------------------
+FactoryBot.define do
+  factory :imported_file do
+    filename { "MyString" }
+    md5sum { "MyString" }
+  end
+end
diff --git a/spec/factories/importer.rb b/spec/factories/importer.rb
new file mode 100644
index 0000000000..3623feeb8e
--- /dev/null
+++ b/spec/factories/importer.rb
@@ -0,0 +1,19 @@
+# frozen_string_literal: true
+
+# Copyright (c) 2008-2013 Michael Dvorkin and contributors.
+#
+# Fat Free CRM is freely distributable under the terms of MIT license.
+# See MIT-LICENSE file or http://www.opensource.org/licenses/mit-license.php
+#------------------------------------------------------------------------------
+FactoryBot.define do
+  factory :importer do
+    entity_type             { :lead }
+    entity_id               { 1 }
+    attachment_file_size    { Random.rand(1..1024) }
+    attachment_file_name    { "#{FFaker::Filesystem.file_name}.#{%w[xls xlsx].sample}" }
+    attachment_content_type { %w[text/xml application/xml].sample }
+    status                  { FFaker::Lorem.word }
+    created_at              { FactoryBot.generate(:time) }
+    updated_at              { FactoryBot.generate(:time) }
+  end
+end
diff --git a/spec/models/files/imported_file_spec.rb b/spec/models/files/imported_file_spec.rb
new file mode 100644
index 0000000000..986670771d
--- /dev/null
+++ b/spec/models/files/imported_file_spec.rb
@@ -0,0 +1,21 @@
+# frozen_string_literal: true
+
+# Copyright (c) 2008-2013 Michael Dvorkin and contributors.
+#
+# Fat Free CRM is freely distributable under the terms of MIT license.
+# See MIT-LICENSE file or http://www.opensource.org/licenses/mit-license.php
+#------------------------------------------------------------------------------
+# == Schema Information
+#
+# Table name: imported_files
+#
+#  id              :integer         not null, primary key
+#  filename        :string(64)      default(""), not null
+#  md5sum          :string(32)      default(""), not null
+#
+
+require File.expand_path(File.dirname(__FILE__) + '/../../spec_helper')
+
+RSpec.describe ImportedFile, type: :model do
+  pending "add some examples to (or delete) #{__FILE__}"
+end
diff --git a/spec/models/files/importer_spec.rb b/spec/models/files/importer_spec.rb
new file mode 100644
index 0000000000..c4c4333431
--- /dev/null
+++ b/spec/models/files/importer_spec.rb
@@ -0,0 +1,52 @@
+# frozen_string_literal: true
+
+# Copyright (c) 2008-2013 Michael Dvorkin and contributors.
+#
+# Fat Free CRM is freely distributable under the terms of MIT license.
+# See MIT-LICENSE file or http://www.opensource.org/licenses/mit-license.php
+#------------------------------------------------------------------------------
+# == Schema Information
+#
+# Table name: importers
+#
+#  id                       :integer         not null, primary key
+#  entity_type              :string
+#  entity_id                :integer
+#  attachment_file_size    :integer
+#  attachment_file_name    :string(255)
+#  attachment_content_type :string(255)
+#  status                  :string(255)
+#  created_at              :datetime
+#  updated_at              :datetime
+#
+
+require File.expand_path(File.dirname(__FILE__) + '/../../spec_helper')
+
+RSpec.describe Importer, type: :model do
+  it "should create a new instance given valid attributes" do
+    Importer.create!(attributes_for(:importer))
+  end
+
+  describe "validates" do
+    it "attachment" do
+      is_expected.to have_attached_file(:attachment)
+    end
+
+    it "attachment presence" do
+      is_expected.to validate_attachment_presence(:attachment)
+    end
+
+    xit "attachment file size" do
+      is_expected.to validate_attachment_size(:attachment)
+        .less_than(10.megabytes)
+    end
+
+    it "attachment content type" do
+      is_expected.to validate_attachment_content_type(:attachment)
+        .allowing('text/xml', 'application/xml',
+                  'application/vnd.ms-excel', 'application/x-ole-storage',
+                  'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet')
+        .rejecting('text/plain')
+    end
+  end
+end
diff --git a/spec/spec_helper.rb b/spec/spec_helper.rb
index a64548e48a..f68ec05477 100644
--- a/spec/spec_helper.rb
+++ b/spec/spec_helper.rb
@@ -12,6 +12,7 @@
 require 'rspec/rails'
 require 'capybara/rails'
 require 'paper_trail/frameworks/rspec'
+require "paperclip/matchers"
 
 require 'factory_bot_rails'
 require 'ffaker'
@@ -47,6 +48,7 @@
   config.include Warden::Test::Helpers
   config.include DeviseHelpers
   config.include FeatureHelpers
+  config.include Paperclip::Shoulda::Matchers
 
   Warden.test_mode!