diff --git a/collection-loader.js b/collection-loader.js
index 9666208..925d0e8 100644
--- a/collection-loader.js
+++ b/collection-loader.js
@@ -1,42 +1,42 @@
-const get = require("lodash/get");
-const flatMap = require("lodash/flatMap");
+const get = require('lodash/get')
+const flatMap = require('lodash/flatMap')
 
-function loadCollectionItems(
+function loadCollectionItems (
   client,
   collections,
-  { storyFields, storyLimits = {}, defaultNestedLimit, customLayouts = [] }
+  { storyFields, storyLimits = {}, defaultNestedLimit, customLayouts = [], previewId = '', qtInternalAppsKey = '' }
 ) {
   const bulkRequestBody = collections.reduce((acc, collection, index) => {
-    let limit = storyLimits[get(collection, ["associated-metadata", "layout"], "")];
-    const customLayout = get(customLayouts, [index]);
+    let limit = storyLimits[get(collection, ['associated-metadata', 'layout'], '')]
+    const customLayout = get(customLayouts, [index])
     if (customLayout) {
-      limit = get(customLayout, ["storyLimit"]);
+      limit = get(customLayout, ['storyLimit'])
     }
 
-    if (!limit && get(collection, ["childCollectionLimit"])) {
-      limit = get(collection, ["childCollectionLimit"]);
+    if (!limit && get(collection, ['childCollectionLimit'])) {
+      limit = get(collection, ['childCollectionLimit'])
     }
 
     if (!limit && defaultNestedLimit) {
-      limit = defaultNestedLimit;
+      limit = defaultNestedLimit
     }
 
     return Object.assign(acc, {
       [`${collection.slug}-${index}`]: {
-        _type: "collection",
+        _type: 'collection',
         slug: collection.slug,
-        "story-fields": storyFields,
+        'story-fields': storyFields,
         limit: limit
       }
-    });
-  }, {});
-
-  return client.getInBulk({ requests: bulkRequestBody }).then(response => response.results);
+    })
+  }, {})
+  const opts = { previewId, qtInternalAppsKey }
+  return client.getInBulk({ requests: bulkRequestBody }, opts).then(response => response.results)
 }
 
 // Ugly. This function updates all the items in place.
 // However, this is way more readable than a pure version
-function updateItemsInPlace(
+function updateItemsInPlace (
   client,
   depth,
   items,
@@ -46,43 +46,47 @@ function updateItemsInPlace(
     defaultNestedLimit,
     nestedCollectionLimit,
     collectionOfCollectionsIndexes = [],
-    customLayouts = []
+    customLayouts = [],
+    previewId = "",
+    qtInternalAppsKey = ""
   }
 ) {
-  const collections = items.filter(item => item && item.type == "collection");
+  const collections = items.filter(item => item && item.type == 'collection')
 
-  if (depth == 0 || collections.length == 0) return Promise.resolve();
+  if (depth == 0 || collections.length == 0) return Promise.resolve()
 
   return loadCollectionItems(client, collections, {
     storyFields,
     storyLimits,
     defaultNestedLimit,
-    customLayouts
+    customLayouts,
+    previewId,
+    qtInternalAppsKey
   }).then(collectionSlugToCollection => {
     collections.forEach((collection, index) => {
-      const slugWithIndex = `${collection.slug}-${index}`;
-      collection.summary = get(collectionSlugToCollection, [slugWithIndex, "summary"], "");
-      collection.automated = get(collectionSlugToCollection, [slugWithIndex, "automated"]);
-      collection["collection-cache-keys"] = get(
+      const slugWithIndex = `${collection.slug}-${index}`
+      collection.summary = get(collectionSlugToCollection, [slugWithIndex, 'summary'], '')
+      collection.automated = get(collectionSlugToCollection, [slugWithIndex, 'automated'])
+      collection['collection-cache-keys'] = get(
         collectionSlugToCollection,
-        [slugWithIndex, "collection-cache-keys"],
+        [slugWithIndex, 'collection-cache-keys'],
         []
-      );
-      collection.items = get(collectionSlugToCollection, [slugWithIndex, "items"], []);
+      )
+      collection.items = get(collectionSlugToCollection, [slugWithIndex, 'items'], [])
       if (nestedCollectionLimit && collection.items) {
-        const customLayout = get(customLayouts, [index]);
+        const customLayout = get(customLayouts, [index])
         collection.items.forEach((item, index) => {
-          if (item.type === "collection") {
+          if (item.type === 'collection') {
             if (customLayout && customLayout.nestedCollectionLimit) {
-              item.childCollectionLimit = get(customLayout, ["nestedCollectionLimit", index]);
-            } else if (nestedCollectionLimit[get(collection, ["associated-metadata", "layout"])]) {
+              item.childCollectionLimit = get(customLayout, ['nestedCollectionLimit', index])
+            } else if (nestedCollectionLimit[get(collection, ['associated-metadata', 'layout'])]) {
               item.childCollectionLimit =
-                nestedCollectionLimit[get(collection, ["associated-metadata", "layout"])][index];
+                nestedCollectionLimit[get(collection, ['associated-metadata', 'layout'])][index]
             }
           }
-        });
+        })
       }
-    });
+    })
 
     if (collectionOfCollectionsIndexes.length) {
       const updatedCollections = collections
@@ -91,21 +95,30 @@ function updateItemsInPlace(
           return updateItemsInPlace(client, 1, childCollection.items, {
             storyFields,
             storyLimits,
-            defaultNestedLimit
-          });
-        });
-      return Promise.all(updatedCollections).then(collections => collections);
+            defaultNestedLimit,
+            previewId,
+            qtInternalAppsKey
+          })
+        })
+      return Promise.all(updatedCollections).then(collections => collections)
     } else {
-      return updateItemsInPlace(client, depth - 1, flatMap(collections, collection => collection.items), {
-        storyFields,
-        storyLimits,
-        defaultNestedLimit
-      });
+      return updateItemsInPlace(
+        client,
+        depth - 1,
+        flatMap(collections, collection => collection.items),
+        {
+          storyFields,
+          storyLimits,
+          defaultNestedLimit,
+          previewId,
+          qtInternalAppsKey
+        }
+      )
     }
-  });
+  })
 }
 
-function loadNestedCollectionData(
+function loadNestedCollectionData (
   client,
   collection,
   {
@@ -115,7 +128,9 @@ function loadNestedCollectionData(
     defaultNestedLimit,
     nestedCollectionLimit,
     collectionOfCollectionsIndexes,
-    customLayouts
+    customLayouts,
+    previewId,
+    qtInternalAppsKey
   }
 ) {
   return updateItemsInPlace(client, depth, collection.items, {
@@ -124,8 +139,10 @@ function loadNestedCollectionData(
     defaultNestedLimit,
     nestedCollectionLimit,
     collectionOfCollectionsIndexes,
-    customLayouts
-  }).then(() => collection);
+    customLayouts,
+    previewId,
+    qtInternalAppsKey
+  }).then(() => collection)
 }
 
-module.exports = { loadNestedCollectionData };
+module.exports = { loadNestedCollectionData }
diff --git a/index.js b/index.js
index d51c25c..3855260 100644
--- a/index.js
+++ b/index.js
@@ -222,7 +222,7 @@ class Story extends BaseAPI {
    * @param {Object} requests
    * @see {@link https://developers.quintype.com/swagger/#/story/post_api_v1_c_request POST /api/v1/bulk-request} API documentation for a list of parameters and fields
    */
-  static getInBulk(client, requests) {
+  static getInBulk(client, requests, opts = {}) {
     function wrapResult(result) {
       if (!result.stories) return result;
       return Object.assign({}, result, {
@@ -231,9 +231,12 @@ class Story extends BaseAPI {
     }
 
     return client
-      .getInBulk({
-        requests: mapValues(r => Object.assign({ _type: "stories" }, r), requests)
-      })
+      .getInBulk(
+        {
+          requests: mapValues(r => Object.assign({ _type: "stories" }, r), requests)
+        },
+        opts
+      )
       .then(response => BulkResults.build(mapValues(result => wrapResult(result), response["results"])));
   }
 }
@@ -355,13 +358,15 @@ class Collection extends BaseAPI {
       customLayouts = []
     } = options;
     const storyFields = _.get(params, ["story-fields"], DEFAULT_STORY_FIELDS);
-
     if (!slug) {
       return Promise.resolve(null);
     }
-
+    const opts =
+      options?.previewId && options?.qtInternalAppsKey
+        ? { previewId: options?.previewId, qtInternalAppsKey: options?.qtInternalAppsKey }
+        : {};
     return client
-      .getCollectionBySlug(slug, params)
+      .getCollectionBySlug(slug, params, opts)
       .then(response => {
         const collection = response ? response["collection"] || response : null;
         return (
@@ -373,7 +378,9 @@ class Collection extends BaseAPI {
             defaultNestedLimit,
             nestedCollectionLimit,
             collectionOfCollectionsIndexes,
-            customLayouts
+            customLayouts,
+            previewId: options?.previewId || "",
+            qtInternalAppsKey: options?.qtInternalAppsKey || ""
           })
         );
       })
@@ -919,7 +926,15 @@ class Client {
     return this.request("/api/v1/preview/story/" + publicPreviewKey).catch(e => catch404(e, {}));
   }
 
-  getCollectionBySlug(slug, params) {
+  getCollectionBySlug(slug, params, opts = {}) {
+    if (opts?.previewId && opts?.qtInternalAppsKey) {
+      return this.request(`/api/v1/preview/${opts?.previewId}/collections/${slug}`, {
+        qs: params,
+        headers: {
+          "qt-internal-apps-key": opts?.qtInternalAppsKey
+        }
+      }).catch(e => catch404(e, null));
+    }
     return this.request("/api/v1/collections/" + slug, {
       qs: params
     }).catch(e => catch404(e, null));
@@ -1041,10 +1056,9 @@ class Client {
     });
   }
 
-  async getInBulk(requests) {
+  async getInBulk(requests, opts = {}) {
     const config = await this.getConfig();
     const requestHash = hash({ ...requests, ...{ publisherId: config["publisher-id"] } });
-
     async function getBulkLocation() {
       const response = await this.request("/api/v1/bulk-request", {
         method: ENABLE_AXIOS ? "post" : "POST",
@@ -1056,20 +1070,44 @@ class Client {
         simple: false,
         resolveWithFullResponse: true
       });
+
       if (response.statusCode === 303 && response.caseless.get("Location")) {
         const contentLocation = response.caseless.get("Location");
         await memoryCache.set(requestHash, contentLocation, BULK_REQ_TTL_CACHE);
         return contentLocation;
-      } else {
-        throw new Error(`Could Not Convert POST bulk to a get, got status ${response.statusCode}`);
       }
+      throw new Error(`Could Not Convert POST bulk to a get, got status ${response.statusCode}`);
+    }
+
+    async function getBulkPreviewData() {
+      const response = await this.request(`/api/v1/preview/${opts?.previewId}/bulk-request`, {
+        method: ENABLE_AXIOS ? "post" : "POST",
+        ...(ENABLE_AXIOS && { data: requests }),
+        ...(!ENABLE_AXIOS && { body: requests }),
+        headers: {
+          "content-type": "text/plain",
+          "qt-internal-apps-key": opts?.qtInternalAppsKey
+        },
+        simple: false,
+        resolveWithFullResponse: true
+      });
+      if (response.statusCode === 200) {
+        const data = response.toJSON();
+        return data?.body;
+      }
+      throw new Error(`Could Not Convert POST bulk to a get, got status ${response.statusCode}`);
     }
 
-    let cachedRequestHash = await memoryCache.get(requestHash);
-    if (!cachedRequestHash) {
-      cachedRequestHash = await getBulkLocation.bind(this)();
+    if (opts?.qtInternalAppsKey && opts?.previewId) {
+      const data = await getBulkPreviewData.bind(this)();
+      return data;
+    } else {
+      let cachedRequestHash = await memoryCache.get(requestHash);
+      if (!cachedRequestHash) {
+        cachedRequestHash = await getBulkLocation.bind(this)();
+      }
+      return this.request(cachedRequestHash);
     }
-    return this.request(cachedRequestHash);
   }
 
   getAmpStoryBySlug(slug) {
diff --git a/package-lock.json b/package-lock.json
index 2a550eb..100a5fd 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "@quintype/backend",
-  "version": "2.5.1",
+  "version": "2.5.2-collection-preview.2",
   "lockfileVersion": 2,
   "requires": true,
   "packages": {
     "": {
       "name": "@quintype/backend",
-      "version": "2.5.1",
+      "version": "2.5.2-collection-preview.2",
       "license": "ISC",
       "dependencies": {
         "axios": "^0.21.1",
diff --git a/package.json b/package.json
index 52e2c2a..fabf971 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@quintype/backend",
-  "version": "2.5.1",
+  "version": "2.5.2-collection-preview.2",
   "description": "client for accessing quintype API",
   "main": "index.js",
   "scripts": {