> For the site documentation index, see [llms.txt](/llms.txt). Docs index: [llms-docs.txt](/llms-docs.txt). Marketing corpus: [llms-full.txt](/llms-full.txt). Docs corpus: [llms-full-docs.txt](/llms-full-docs.txt). Product skill: [skill.md](/skill.md). Prefer markdown URLs (append `.md`) when available.

# Reloop vs Postmark

> Learn how Reloop compares to Postmark for transactional email.

HTML: https://reloop.sh/compare/postmark
Markdown: https://reloop.sh/compare/postmark.md
Canonical pricing: https://reloop.sh/pricing.md

Postmark focuses on transactional delivery with streams. Reloop unifies transactional API sends and campaigns, is Apache 2.0 / self-hostable, and offers an agent inbox. Reloop Free is 3,000 emails/month (200/day).

Reloop is the email service / infrastructure (ESP + MTA). It is not a multi-ESP connector that sits on SendGrid, Mailgun, Resend, or SES.

## Reloop vs Postmark

| Feature | Reloop | Postmark |
| --- | --- | --- |
| Open-source codebase | Yes (Apache 2.0) | No |
| Self-hostable | Yes | No |
| Transactional API | Yes | Yes |
| Delivery analytics | Yes | Yes (detailed) |
| Marketing campaigns | Yes | Limited |
| SMTP relay | Yes | Yes |
| Message streams / separation | Domain + campaign types | Streams |
| Agent inbox | Yes | No |
| Free tier | 3,000 emails / month · 200 / day | Trial credits |

## FAQ

### Does Reloop match Postmark latency?

Hosted Reloop targets production-grade transactional latency. Self-hosted performance depends on your network and MTA setup—same as any self-managed stack.

### Should we use both for streams?

Reloop can separate transactional API sends from campaign traffic without two vendors. Most Postmark stream use cases map to Reloop domains plus campaign modules.

## Related

- Pricing: https://reloop.sh/pricing.md
- Compare index: https://reloop.sh/compare.md
- License (Apache 2.0): https://reloop.sh/license