Mailgun (mailgun.com) has a 4.2 out of 5 rating on OK.one, based on 105 user reviews collected here. It is listed under Electronics & Technology and its reputation is good. 79% of reviews are 4 stars or higher and 18% are 1 star; The business has replied to 70% of negative reviews. Last updated 2026-08-10.
I had a complex problem that required a number of different people to coordinate in order to solve it. They did so quickly and communicated effectively every step of the way.
Thanks Rob, glad to hear our team was able to get your issue resolved. Have a great weekend!
The entire Mailgun team deserves an award for truly exceptional customer service. They spent an entire day working with me to troubleshoot an issue involving an outside integration—something that wasn’t even their responsibility. Their patience, clarity, and commitment to helping me understand exactly what was needed for success went far beyond expectations. And trust me, I shop around. When it comes to quality, deliverability, and cost efficiency—especially for BULK sending—Mailgun stands in a league of its own. 10 out of 10 stars! ❤️
WOW! Thanks so much for the feedback. Glad we were able to help you out. Have a wonderful day.
DZONE® Skydiving loves Mailgun! We needed a solution for SMTP that was reasonable and more importantly reliable. While we are small and can't even send enough mail to get above the lowest tier, Mailgun's support team is responsive and attentive. The product is rock-solid. Our only support issues have been administrative and for technical knowledge. Our SMTP mail makes it to our customers successfully and Mailgun provides excellent documentation for setting up SPF, DKIM, and DMARC. Thanks Mailgun; we plan to grow with you on our team!
Great to hear, we love you too Abbie! Have a great New Year and happy sending.
We are a brand new user of Mailgun. Our initial test went well, but when the Mailgun SMTP server was integrated into our app, we ran into a problem. Tech support supplied ideas that allowed us to get to the source of the problem, and we are now up and running. Our only criticism is that tech support is via e-mail only - no phone support, which would have saved us a day of debugging.
Welcome aboard! Thanks for choosing Sinch Mailgun. Happy New Year!
How many good things can I say about this company? The dashboard and on-boarding process is very user-friendly. Documentation is robust and support...WOW! I can't think how long it's been since I was truly impressed by a tech company's speed and accuracy of support. Both phone and email support. Super friendly staff who act like they really care that you are a customer. I HIGHLY recommend Mailgun for sending and list validation (super fast)!!
WOW! Thanks Holly! So glad we are meeting your expectations. Thanks for the feedback and thanks for choosing Sinch Mailgun.
105 reviews matching