LetterFeed

LetterFeed converts email newsletters into RSS feeds by periodically scanning an IMAP mailbox for messages from configured senders and publishing each message as a feed entry. It provides a web UI for basic configuration and is distributed with Docker Compose for easy deployment.

Key Features

• Polls an IMAP mailbox (IMAP over SSL, port 993) and detects new emails from configured senders
• Generates per-sender RSS feeds with extracted email content as feed entries
• Web UI for configuring senders and some credentials; additional settings available via environment variables
• Docker Compose-based deployment for straightforward self-hosting and updates
• Environment variables (.env) locking to control which settings are editable from the UI
• Processes HTML and plain-text email content into feed items suitable for RSS readers

Use Cases

• Subscribe to email newsletters in any RSS reader instead of an inbox
• Archive and index newsletter content for personal reference or backups
• Feed newsletters into other automation or aggregation systems that consume RSS

Limitations and Considerations

• Requires direct IMAP access to a mailbox; providers that block IMAP or require OAuth2 app flows may need app-specific passwords or additional configuration
• Complex or heavily scripted newsletters may not render identically when converted to RSS; embedded scripts and some interactive elements will be stripped
• Focused on newsletter-to-RSS conversion; not a full-featured multi-tenant email management or advanced parsing platform

LetterFeed is a lightweight, practical solution for anyone who prefers to read newsletters via RSS. Its Dockerized deployment and simple UI make it easy to run on personal servers or small instances.