Mailgun by Sinch vs Postmark: Which Should You Choose in 2026?
Both prices below were read from each vendor's own pricing page on the date shown.
Pricing side by side
| Plan | Mailgun by Sinch | Postmark |
|---|---|---|
| tier 1 | Free — 5,000 free emails for 30 days, standard SMTP and REST APIs | Free — 100 free test emails/mo, full REST API, webhooks, 45 days history |
| tier 2 | $35/mo — 50,000 emails/mo, email verification, 5 days log retention | $15/mo — 10,000 emails/mo, 45 days full content retention, inbound processing |
| tier 3 | $90/mo — 100,000 emails/mo, dedicated IP, send time optimization, 30 days logs | $55/mo — 50,000 emails/mo, full analytics, subaccounts, dedicated deliverability |
| tier 4 | On request — Millions of emails, custom deliverability consultation, dedicated TAM, SLA | $115/mo — 125,000 emails/mo, dedicated IP add-on available, priority support |
read from both vendors' pricing pages · 22 Aug 2026 · how we verify
Choose Mailgun by Sinch if
- Software engineers building transactional email notifications into apps
- Enterprises requiring dedicated IPs and predictive deliverability monitoring
Choose Postmark if
- SaaS application developers requiring sub-second transactional delivery
- Product teams needing comprehensive 45-day email event troubleshooting logs
Where each one disappoints
Mailgun by Sinch
- Visual drag-and-drop template newsletter authors
Postmark
- Scraped cold outbound sales email campaigns
Compiled by Stepan Noianov from both vendors' own sites. Something wrong? Report an inaccuracy.