toolgrep / Email & messaging / Groundmail
Alternatives to Groundmail
Groundmail: Transactional email API and SMTP relay for password resets, sign-in codes, receipts and alerts, kept separate from marketing mail. 8 products similar to Groundmail, 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, 4 of 8 offer an MCP server, 1 of 8 is open source.
- Anypost
Transactional and broadcast email service
- Mailgun
Transactional email API service for developers
- Postmark
Transactional and bulk email delivery service with REST API and SMTP support
- Maileroo
SMTP relay and email API for transactional and marketing email
- Resend
Email API for developers
- Reloop
Open-source email API and infrastructure for developers: transactional email, SMTP relay, campaigns, webhooks, and agent inboxes.
- Unitpost
Email and SMS sending platform for developers, with API, SDKs, SMTP, and an MCP server for AI agents.
- MailerSend
Transactional email, SMS, and WhatsApp delivery service with a REST API and SMTP relay
Side by side
| Product | Pricing | Free tier | API | MCP server | SDK | Open source |
|---|---|---|---|---|---|---|
| Groundmail | Freemium · from $0 | yes | yes | yes | yes | no |
| Anypost | Freemium · from $0 (Free: 3,000 emails/month); paid plans from $20/mo | yes | yes | no | yes | no |
| Mailgun | Freemium · from $15/mo (Basic plan); free tier includes 100 emails/day | yes | yes | no | yes | no |
| Postmark | Freemium · from $15.00/mo | yes | yes | no | yes | no |
| Maileroo | Freemium · from $10/mo (25,000 emails); free tier with 3,000 emails/month | yes | yes | no | yes | no |
| Resend | Freemium | yes | yes | yes | yes | no |
| Reloop | Freemium · from $0 | yes | yes | yes | yes | yes |
| Unitpost | Freemium · from $0/mo (Free, 5k emails/mo); paid plans from $10/mo | yes | yes | yes | yes | no |
| MailerSend | 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/groundmail/alternatives