toolgrep / Email & messaging / Cooper Email
Alternatives to Cooper Email
Cooper Email: HTTP email API that gives each AI agent its own inbox. 8 products similar to Cooper Email, compared on pricing, free tier, API, MCP server, SDK and open source. 7 of 8 have a free tier, 8 of 8 have an API, 8 of 8 offer an MCP server, 1 of 8 is open source.
- mails0
Open-source email API for AI agents
- Atomic Mail
Email API for AI agents
- Faivelo
Email for AI agents: agent inboxes with REST API, webhooks and MCP
- Fiskmås
Hosting for AI agents
- Courier
Customer messaging platform for humans and AI agents
- Sending
MCP-native messaging orchestration for email, WhatsApp and Telegram
- Pethost
Agent-first cloud for everything you build
- Layrcake
Go-to-market infrastructure for AI agents
Side by side
| Product | Pricing | Free tier | API | MCP server | SDK | Open source |
|---|---|---|---|---|---|---|
| Cooper Email | Freemium · from $0 | yes | yes | yes | — | no |
| mails0 | Free | yes | yes | yes | yes | yes |
| Atomic Mail | Free | yes | yes | yes | yes | — |
| Faivelo | Freemium · from $0 | yes | yes | yes | yes | no |
| Fiskmås | Freemium · from $0 | yes | yes | yes | no | — |
| Courier | Usage-based | yes | yes | yes | yes | no |
| Sending | Freemium · from €0/mo (free tier: 3,000 emails/mo) | yes | yes | yes | yes | no |
| Pethost | Paid · from €9.99/month | no | yes | yes | yes | — |
| Layrcake | Freemium | yes | yes | yes | 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
curl https://toolgrep.com/api/products/cooper-email/alternatives