toolgrep / Email & messaging / Reloop
Alternatives to Reloop
Reloop: Open-source email API and infrastructure for developers: transactional email, SMTP relay, campaigns, webhooks, and agent inboxes. 8 products similar to Reloop, 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.
- Resend
Email API for developers
- SMTPfast
Transactional email API for developers, built on AWS SES
- Mailtrap
Email delivery platform for developer and product teams: Email API/SMTP sending, email testing sandbox, and email marketing.
- Plunk
Open-source transactional email platform
- Maileroo
SMTP relay and email API for transactional and marketing email
- EmailLabs
Cloud-based SMTP service and email API for sending and tracking transactional and marketing emails
- Postmark
Transactional and bulk email delivery service with REST API and SMTP support
- Mailjet
Email marketing software and email API for marketing and transactional email
Side by side
| Product | Pricing | Free tier | API | MCP server | SDK | Open source |
|---|---|---|---|---|---|---|
| Reloop | Freemium · from $0 | yes | yes | yes | yes | yes |
| Resend | Freemium | yes | yes | yes | yes | no |
| SMTPfast | Freemium · from $0 (free tier, 3,000 emails/month); paid plans from $9/month; overflow credits at $0.001 per email | yes | yes | yes | yes | — |
| Mailtrap | Freemium · from $15 | yes | yes | yes | yes | no |
| Plunk | Freemium | yes | yes | yes | no | yes |
| Maileroo | Freemium · from $10/mo (25,000 emails); free tier with 3,000 emails/month | yes | yes | no | yes | no |
| EmailLabs | Freemium · from 0 PLN/month (Startup plan, up to 9,000 emails/month, 300 emails/day limit); paid plans from 99 PLN/month (Essential 30, up to 100,000 emails/month) | yes | yes | no | yes | no |
| Postmark | Freemium · from $15.00/mo | yes | yes | no | yes | no |
| Mailjet | 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/reloop/alternatives