Postmark is an alternative
to Mailgun
$15/mo (Basic) vs Mailgun Basic at $15/mo — covering 62% of the 9 compared capabilities.
Same job. Compare the fees.
Comparison scenario
Every cheaper-than claim is tied to a defined scenario — never a bare list price.
1,000 emails/month, 1 seat, monthly billing · USD · prices as observed on official pricing pages.
Basic plan at $15/mo, the cheapest paid plan.
Basic: 15 USD/monthly.
Mailgun costs $15/mo on the Basic plan at 1,000 emails/month, 1 seat, monthly billing. Postmark costs $15/mo (Basic plan), which is not cheaper than Mailgun Basic at $15/mo in this scenario.
Capability comparison
Postmark covers 62% of the 9 capabilities compared against Mailgun. ✓ native · ◐ via integration · ✗ not found.
| Capability | Postmark | Mailgun |
|---|---|---|
| Transactional email API | ✓ | ✓ |
| Custom sending/tracking domain | ✓ | ✓ |
| Email address validation | ✗ | ✓ |
| Inbound email parsing | ✓ | ✓ |
| Event webhooks | ✓ | ✓ |
| Deliverability SLA / support | ✗ | ✓ |
| SMTP & REST API | ✓ | ✓ |
| Dedicated IP | ✓ | ✓ |
| Email templates | ✓ | ✓ |
What you give up
Capabilities Mailgun has that Postmark lacks.
- Email address validation — Validate an email address before sending to it.Missing from Postmark.
- Deliverability SLA / support — Get a guaranteed deliverability service-level agreement.Missing from Postmark.
Plans & pricing, side by side
Advertised prices in USD as observed on the official pricing pages — per-seat and transaction-fee plans are marked.
| Free | Free |
| Basic | $15/mo |
| Pro | $16.50/mo |
| Platform | $18/mo |
| High-volume / Enterprise | Contact sales |
| Free | Free |
| Basic | $15/mo |
| Foundation | $35/mo |
| Scale | $90/mo |
| Enterprise | Contact sales |
Frequently asked
What does Postmark lack compared with Mailgun?
Dedicated IP, Send-time optimization, SSO (SAML), Email address validation, Deliverability SLA / support — 5 of the 9 compared capabilities.
When were these prices checked?
Mailgun: 2026-10-26; Postmark: 2026-10-26 — on the official pricing pages.
Who switched
Anonymous: no account, no email, no IP stored. Reports are shown once a switch has 3 or more and never change ranking or order — alternatives are computed from prices and capabilities only.
Sources & freshness
- https://www.mailgun.com/pricing/ (official_pricing, checked 2026-10-26)
- https://www.mailgun.com/pricing/#navSearch (official_pricing, checked 2026-10-26)
- Postmark data last verified 2026-10-26