Postmark vs Mailgun(2026)
Postmark is better for teams that need best deliverability. Mailgun is the stronger choice if powerful inbound routing. Postmark is paid (from $15/month) and Mailgun is freemium (from $15/month).
Full feature breakdown, pricing details, and pros & cons below.
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Postmark
Postmark specializes in fast, reliable transactional email delivery with industry-leading delivery speeds.
Starting at $15/month
Visit PostmarkMailgun
Mailgun is a developer-focused email API service for sending transactional and marketing emails with robust tracking.
Starting at $15/month
Visit MailgunHow Do Postmark and Mailgun Compare on Features?
| Feature | Postmark | Mailgun |
|---|---|---|
| Pricing model | paid | freemium |
| Starting price | $15/month | $15/month |
| Transactional email | ✓ | — |
| 45-day email history | ✓ | — |
| DKIM/SPF auto-setup | ✓ | — |
| Message streams | ✓ | — |
| Templates | ✓ | — |
| Transactional API | — | ✓ |
| Email validation | — | ✓ |
| Email routing | — | ✓ |
| Inbound parsing | — | ✓ |
| Analytics | — | ✓ |
| Suppressions | — | ✓ |
Postmark Pros and Cons vs Mailgun
P
Postmark
+Best deliverability
+Fast delivery (< 10s)
+Excellent support
+Clean interface
−No free tier
−Transactional-only (no marketing)
−Pricier per-email at low volumes
M
Mailgun
+Powerful inbound routing
+Email validation API
+Good deliverability
+SMTP + API
−Less polished DX than Resend
−No React template support
−UI feels dated
Should You Use Postmark or Mailgun?
Choose Postmark if…
- •Best deliverability
- •Fast delivery (< 10s)
- •Excellent support
Choose Mailgun if…
- •Powerful inbound routing
- •Email validation API
- •Good deliverability