feat: Add alias option for setting the 'From' name in emails

.env.example

@@ -3,6 +3,8 @@ WATCH_INTERVAL=300
 # Emails will this subject will be replied to
 # (also looks for "Re: <SUBJECT>")
 SUBJECT_KEY="llmail autoreply"
+# This is the alias that the LLM will use when sending emails
+ALIAS = "LLMail"
 # This message will be prepended to the message history sent to the LLM as a message from the system role
 # Use this for customizing the behavior of the LLM and hence the nature of the responses
 SYSTEM_PROMPT=

llmail/__main__.py

@@ -98,6 +98,7 @@ def main():
                 while True:
                     fetch_and_process_emails(
                         subject=args.subject_key,
+                        alias=args.alias,
                         system_prompt=args.system_prompt,
                     )
                     time.sleep(args.watch_interval)
@@ -106,11 +107,13 @@ def main():
             else:
                 fetch_and_process_emails(
                     subject=args.subject_key,
+                    alias=args.alias,
                     system_prompt=args.system_prompt,
                 )
 
 def fetch_and_process_emails(
         subject: str,
+        alias: str = None,
         system_prompt: str = None,
 ):
     """Fetch and process emails from the IMAP server."""
@@ -227,6 +230,7 @@ def fetch_and_process_emails(
             send_reply(
                 thread=get_thread_history(client, email_thread),
                 subject=subject,
+                alias=args.alias,
                 client=client,
                 msg_id=msg_id,
                 message_id=message_id,
@@ -407,6 +411,7 @@ def set_primary_logger(log_level):
 def send_reply(
     thread: list[dict],
     subject: str,
+    alias: str,
     client: IMAPClient,
     msg_id: int,
     message_id: str,
@@ -438,7 +443,7 @@ def send_reply(
     generated_response = generated_response.choices[0].message.content
     logger.debug(f"Generated response: {generated_response}")
     yag = yagmail.SMTP(
-        user=args.smtp_username,
+        user={args.smtp_username: alias} if alias else args.smtp_username,
         password=args.smtp_password,
         host=args.smtp_host,
         port=int(args.smtp_port),

llmail/utils/cli_args.py

@@ -89,6 +89,11 @@ def set_argparse():
         help="Emails with this subject will be replied to",
         default=os.getenv("SUBJECT_KEY") if os.getenv("SUBJECT_KEY") else "llmail autoreply",
     )
+    email.add_argument(
+        "--alias",
+        help="Name to use in the 'From' in addition to the email address",
+        default=os.getenv("ALIAS") if os.getenv("ALIAS") else "LLMail",
+    )
     imap = email.add_argument_group("IMAP")
     imap.add_argument("--imap-host", help="IMAP server hostname", default=os.getenv("IMAP_HOST"))
     imap.add_argument("--imap-port", help="IMAP server port", default=os.getenv("IMAP_PORT"))