Daily Gmail Newsletter Digests with GPT-4.1-mini

This workflow triggers daily at a set time (default 16:00) to fetch newsletters from Gmail using a custom search query for messages since yesterday, with optional sender filters. It retrieves full email details including HTML body, subject, sender, and date, then uses GPT-4.1-mini to generate consistent JSON summaries of key topics for each email. Topics are merged into a unified list, rendered into a clean, styled HTML digest with enumerated items, and sent to your inbox via Gmail.

Benefits include time-saving curation of daily/weekly newsletter rollups, reducing inbox overload while providing scannable insights from multiple sources. It's ideal for market research, team briefings, or personal knowledge management, ensuring you stay informed without manual effort.

Use cases: Aggregate digests from specific media/authors (e.g., tech newsletters), create forwardable team summaries, or build custom intelligence feeds. Requires Gmail OAuth2 credentials for read/send and OpenAI account. Highly customizable via search filters and prompt tweaks for tailored outputs.