New dev-team greenfield projects (Postmark or Resend now dominate that mindshare) and cost-driven high-volume senders (AWS SES wins).
Established Mailgun deployments and teams that need US + EU regional sending with tag-based analytics on a mature SDK.
Why we say this
Editorial pulled these weaknesses from Mailgun’s product card in our Top 10 Transactional Email Software for 2026:
- ! Free tier converted to a 30-day trial in 2022 (no longer permanent free)
- ! Pricing has crept up on lower tiers under Sinch ownership
- ! Dev mindshare for new projects has migrated away
- ! Support response times have degraded vs the 2018-2020 baseline per recent reviews
- ! Validations API adds meaningful cost on top of sending
If Mailgun is wrong for you, consider these instead
Same Transactional Email Software category, different best-fit buyer.
Best for
High-volume senders (1M+ emails/month) with in-house deliverability expertise and a willingness to manage IP reputation themselves.
See full profile →Best for
New React/Next.js/TypeScript projects where developer experience and integration with React-Email are deciding factors.
See full profile →Best for
Enterprise senders above 10M emails/month who need real-time analytics, dedicated deliverability engineering, and the underlying Momentum MTA pedigree.
See full profile →Related editorial
Last updated 2026-05-23. Editorial verdict based on the published Top 10 Transactional Email Software for 2026 ranking. Disagree? Tell us.