Head-to-head · SMTP
Mailgun vs Postmark
Mailgun is cheaper at every volume we checked. Costs are the base sending price; verified July 2026.
MailgunA developer-focused workhorse with flexible APIs; overages add up at scale.
PostmarkPremium transactional deliverability and speed — priciest, but trusted for critical mail.
| Emails / month | Mailgun | Postmark | Cheaper |
|---|---|---|---|
| 10k | $15/mo | $15/mo | Tie |
| 50k | $35/mo | $87/mo | Mailgun |
| 100k | $90/mo | $177/mo | Mailgun |
| 250k | $255/mo | $447/mo | Mailgun |
| 500k | $540/mo | $897/mo | Mailgun |
| 1M | $990/mo | $1,797/mo | Mailgun |