Best Email & messaging
10 products in Email & messaging that have an API, out of 13 in the category. Listed in ranking order and compared on pricing, free tier, API, MCP server, SDK and open source. 10 of 10 have a free tier, 10 of 10 have an API, 2 of 10 offer an MCP server, 3 of 10 are open source.
- CleanTempMail✓
Free temporary email with 1278+ domains, no sign-up required
- GhostChat
Live chat for your website: 18.9KB, zero cookies, nothing stored until a visitor opens the chat.
- 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.
- Slack
AI work platform and productivity tools
- Knocket
One Knock. Every Connection.
- Flock
Team messenger and online collaboration platform
- Chanty
Team communication and collaboration software with chat, tasks, Kanban, audio & video calls, and AI agent support
- Stoat
Open-source group chat app for friends and communities
- Gitter
Where developers come to talk.
Side by side
| # | Product | Pricing | Free tier | API | MCP server | SDK | Open source |
|---|---|---|---|---|---|---|---|
| 1 | CleanTempMail✓ | Free | yes | yes | no | no | no |
| 2 | GhostChat | Freemium · from $0/mo (Free plan); Starter $5/mo; Team $25/mo; optional AI assistant $0.10 per AI conversation | yes | yes | no | yes | no |
| 3 | Telegram | Free | yes | yes | no | yes | yes |
| 4 | Rocket.Chat | Freemium | yes | yes | no | yes | yes |
| 5 | Slack | Freemium | yes | yes | yes | yes | no |
| 6 | Knocket | Free | yes | yes | no | yes | no |
| 7 | Flock | Freemium | yes | yes | no | no | no |
| 8 | Chanty | Freemium · from $3 per user/month (Business, billed annually); free plan available | yes | yes | yes | — | no |
| 9 | Stoat | Free | yes | yes | no | — | yes |
| 10 | Gitter | Free | yes | yes | no | no | — |
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'