Mailgun: Generous Free Tier and Good Performance + Reliability
Ben Gelsey | TrustRadius Reviewer
Updated June 30, 2019

Mailgun: Generous Free Tier and Good Performance + Reliability

Score 6 out of 10
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Overall Satisfaction with Mailgun

Mailgun is the transaction email provider for my company, Flights Machine. We send out large volumes of transaction emails to our user base, everything from:

- Post signup welcome emails
- Purchase confirmation emails
- Password reset emails
- Cancellation confirmation emails
- Upsell emails

All of these emails are essential to the proper functioning of a website, and Mailgun handles them reliably.

  • Email deliverability has been very high with Mailgun
  • Customer Support (when we had a problem, they resolved it in under 24 hours)
  • Easy to use website and Ruby API
  • Error reporting (we were silently failing to deliver email to any Hotmail users for a few weeks until we noticed it ourselves)
  • Pricing (after you go beyond the free tier it gets expensive quickly)
  • Reporting is very limited
  • Cancellation upsell transactional emails reduced our churn
  • Welcome emails increased our inbound customer contact substantially
  • Password reset emails keep our customer support burden low
Amongst the various transactional email vendors (Mandrill by MailChimp, SendGrid's transactional email product, Mailjet, etc.) they are all relatively similar. Mailgun stands out in that it has one of the more generous free tiers and therefore is a strong choice for small startups operating at low volume. Similarly, for most B2B companies with small customer bases you may never need to pay for Mailjet at all.
When looking for a transactional email vendor, Mailgun does the job well. Overall, Mailgun has been very reliable, other than having a problem delivering to certain Hotmail users. However, after getting in contact with support, they resolved the issue within 24 hours. Ultimately, there isn't much differentiation between Mailgun and its competitors, which is why I don't rank it higher than an 8.