Best Email & messaging
3 products in Email & messaging that have an API and are open source, out of 13 in the category. Listed in ranking order and compared on pricing, free tier, API, MCP server, SDK and open source. 3 of 3 have a free tier, 3 of 3 have an API, 3 of 3 are open source.
- Telegram
A new era of messaging
- Rocket.Chat
Secure communication platform for messaging, voice, video, apps, and AI, deployable on-premises, in sovereign cloud, or air-gapped.
- Stoat
Open-source group chat app for friends and communities
Side by side
| # | Product | Pricing | Free tier | API | MCP server | SDK | Open source |
|---|---|---|---|---|---|---|---|
| 1 | Telegram | Free | yes | yes | no | yes | yes |
| 2 | Rocket.Chat | Freemium | yes | yes | no | yes | yes |
| 3 | Stoat | Free | yes | yes | no | — | yes |
Ranked by verification, completeness, extraction confidence and method (AI model or heuristic fallback), and API/MCP support; ties go to the newest listing. Paid plans aren't an input to the ranking. Facts come from each product's own website, or from its verified owner when they have edited the listing. Each product page shows when it was last verified and how it was extracted.
All 13 products in Email & messaging →
API
curl 'https://toolgrep.com/api/products?category=messaging&has_api=1&open_source=1'