toolgrep / Email & messaging / Unitpost
Alternatives to Unitpost
Unitpost: Email and SMS sending platform for developers, with API, SDKs, SMTP, and an MCP server for AI agents. 8 products similar to Unitpost, compared on pricing, free tier, API, MCP server, SDK and open source. 8 of 8 have a free tier, 8 of 8 have an API, 5 of 8 offer an MCP server, 1 of 8 is open source.
- Anypost
Transactional and broadcast email service
- Pingram
Messaging APIs for emails, SMS, voice, and WhatsApp
- Courier
Customer messaging platform for humans and AI agents
- SuprSend
Notification infrastructure for email, SMS, Slack, push, and in-app notifications via a single API.
- SMSGate
Open-source SMS gateway for Android — send and receive SMS and MMS via REST API, webhooks, SMPP, or SMTP.
- Atomic Mail
Email API for AI agents
- Postman
API engineering for your agents
- Buttondown
Newsletter software for writers, creators, and developers
Side by side
| Product | Pricing | Free tier | API | MCP server | SDK | Open source |
|---|---|---|---|---|---|---|
| Unitpost | Freemium · from $0/mo (Free, 5k emails/mo); paid plans from $10/mo | yes | yes | yes | yes | no |
| Anypost | Freemium · from $0 (Free: 3,000 emails/month); paid plans from $20/mo | yes | yes | no | yes | no |
| Pingram | Freemium · from $20/month | yes | yes | yes | yes | no |
| Courier | Freemium | yes | yes | yes | yes | no |
| SuprSend | Freemium | yes | yes | yes | yes | no |
| SMSGate | Free | yes | yes | no | yes | yes |
| Atomic Mail | Free | yes | yes | yes | yes | — |
| Postman | Freemium · from $9 | yes | yes | yes | yes | no |
| Buttondown | Freemium | yes | yes | no | yes | no |
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. Similarity comes from the products' descriptions.
API
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