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.
What people say
j
jamie · 25 reviews · Experienced 2026-06-18 ·
★★★★★
Avoid Mailgun.
Avoid Mailgun.
I used their free service for one of my client’s websites for over six months without issue. Today, while trying to send a legitimate mailshot for a UK business, I ran into account limits and contacted support straight away.
My account was then put under evaluation. They asked questions about my client’s business, which I answered clearly and accurately. Shortly afterwards, they permanently disabled the account without giving any specific reason.
This was the response I received:
“After reviewing your account details and activity, we’ve decided to permanently disable your Mailgun account.
Unfortunately, we are unable to fully disclose specific reasons behind this action in order to protect our customers, internal processes, and compliance systems.”
This has caused unnecessary disruption for a genuine business. What makes it worse is that I had upgraded to a paid account, so I fully expect a refund.
Very poor experience and not a service I would trust again.
A
Allan da Silva · 5 reviews · Experienced 2026-06-18 ·
★★★★★
Full-fledged and well designed tool!
Full-fledged and well designed tool!
Mailgun delivers outstanding performance with a huge range of features—from smart routing to detailed logs and analytics. It’s fast, reliable, and packed with tools that make email delivery simple and efficient. Highly recommended.
Reply from Mailgun2026-06-26
Hey thanks so much Allan, glad our platform is working out for you. Thanks for choosing Sinch Mailgun!
M
Marlon Abraham Ordoñez · 1 review · Experienced 2026-06-16 ·
★★★★★
Great support from Customer Service
I received great support from Customer Service, in a timely and accurate manner. I am glad the team take our requests with the right importance and priority.
Reply from Mailgun2026-06-17
Thanks so much for the feedback Marlon, hope you have a great day.
L
Legal Aid of Sonoma County · 1 review · Experienced 2026-06-16 ·
★★★★★
Helpful customer service
We needed to update the credentials on our account. It took some figuring out to get to the right team, but once we were connected they resolved our issue promptly.
Reply from Mailgun2026-06-17
Great to hear, glad we were able to get it taken care of for you. Have a great day!
Setup is great, support is super fast - so much better than sendgrid!
Reply from Mailgun2026-06-15
Thanks so much! Hope you have a great week.
J
James Douglasse · 9 reviews · Experienced 2026-06-05 ·
★★★★★
I had to give up on Mailgun
I had to give up on Mailgun. I set up my PR company's outbound with them... and whilst (i own this) there were some problems with my list quality, and a break down in checking.... a bunch of my emails were not delivered due to mailgun providing blacklisted shared IPs.
I tried for over a week to get a move to a fixed IP, but for whatever reason... could not get it done. I'm told it won't help me; I don't send enough mail. But I can't prove I send enough mail, because I can't send enough, due to the shared IPs resulting in high bounce levels, and I need to keep backing off my sends.
It's my money, its my choice, why can't I just get a fixed IP?
Moving to another provider.
H
Howard Livsey · 6 reviews · Experienced 2026-06-05 ·
★★★★★
Finally given up the ghost
Finally given up the ghost.
Shocking canned responses from support that bear no resemblance to the question asked. You have to wait 24 hours for answers to tickets which when you deploy Mailgun for password resets/2FA isn't ideal for our users. Moved to a better provider for a franction of the cost.
After several months of being unable to access my account due to losing my phone, the customer service support was a helpful and informative experience, thanks to their professionalism and responsiveness. Thank you to the entire team.
Reply from Mailgun2026-06-02
You are entirely welcome, glad we could help. Thanks for choosing Sinch Mailgun!
S
Steve · 1 review · Verified · Experienced 2026-05-29 ·
★★★★★
Excellent experience
Reply from Mailgun2026-06-02
Great to hear! Hope you have a wonderful day
R
Russel · 1 review · Experienced 2026-05-29 ·
★★★★★
Their support was fast
Their support was fast. They replied to me within hours and they are also patient when it comes to late replies. I find it useful when they provide links and instructions that are easy to follow.
Reply from Mailgun2026-06-02
Thanks so much for the feedback. Glad your issue was taken care of. Have a great day!
I had made a mistake in implementing the script in the application. The Mailgun support team resolved the issue quickly. You can really see how professional a company is when a problem arises. Thank you!
Reply from Mailgun2026-05-27
Not a problem at all, let us know if you run into any further issues.
I deleted the account and they are still charging my card.
Reply from Mailgun2026-05-27
Hi there Sameer, we'd be more than happy to refund any subscription charges. If you could send an email to [email protected] someone will assist you. Thanks.
