Mailgun Reviews & Product Details

Mailgun is developer and user friendly, with articulated integration support and efficient APIs

The app has dependable delivery or emails, where it avoids spams and maintains efficient communication

Mailgun tracks logins and emails delivery, ensuring that seamless communication with all stakeholders

Mailgun is efficient and scalable, even with large volumes of emails, and no operational frictions

Mailgun has robust security controls, something that ensures there is IP whitelisting and two step verification Review collected by and hosted on G2.com.

Mailgun advanced features makes the cost to pile up and be expensive

The app lacks efficient email campaigns support, which can enhance marketing effectiveness Review collected by and hosted on G2.com.

It is very easy to setup, they build quite simple step by step interface for that, even have integration with CloudFlare to add DNS records automatically. Deliverability graph is done simple and nicely, shows failed emails right away as well. Review collected by and hosted on G2.com.

One time integration with CloudFlare didn't work for some reason, it said try in couple minutes again but was down at least for an hour so I had to manually add records. Otherwise everything was fine. Review collected by and hosted on G2.com.

We like Mailgun's very clean UI/UX, which makes it easy to use. It's reliable with 100% uptime. The API is easy to implement, and I appreciate that it also offers an SMTP option. We switched from Amazon SES to Mailgun because of the better UI and fewer deliverability issues. The initial setup of Mailgun was very easy, taking just a few minutes. We also like that Mailgun can be connected to many other software, such as Iterable. Review collected by and hosted on G2.com.

Setting up tracking can be a bit complex depending on how you manage your SSL certificate and if it allows multi-level subdomains. Also, logs can be fairly complex to navigate, it always takes a lot of time to find a specific email, there's no easy search feature. Review collected by and hosted on G2.com.

Mailgun has proven to be highly reliable for sending transactional emails and system notifications. Its API is thoroughly documented, simple to integrate, and offers the flexibility needed for more complex scenarios. I have consistently experienced strong deliverability, and the inclusion of features such as logs, webhooks, and event tracking greatly simplifies debugging and monitoring email performance. Setting up DNS is uncomplicated, and authentication methods like SPF, DKIM, and DMARC are well supported. Review collected by and hosted on G2.com.

As your usage increases, the pricing model can become quite costly, which may be a concern for smaller teams or startups. Although the UI is functional, it appears outdated in certain sections and may be challenging for users without a technical background. Additionally, accessing some advanced features often requires searching through documentation, as they are not always prominently displayed within the dashboard. Review collected by and hosted on G2.com.

With Mailgun, we have been able to add email sending, delivery, tracking capabilities on our website. This makes it easy to send confirmation emails, receipts, and transactional details to our web clients.

I also like that Mailgun makes it easy to send marketing emails to our prospects and we have realized increased conversion ever since deployment.

I like the email validation features that helps in cleaning our business mailing list and we're able to remove invalid emails automatically and this protects our reputation.

Finally, the tool supports customization and the easy integration makes it irresistible. Review collected by and hosted on G2.com.

Mailgun is a powerhouse that has never failed us. It packs all the great features and has been very helpful. Review collected by and hosted on G2.com.

The best thing about Mailgun is its ability to handle high sending volumes reliably while protecting our domain's reputation.

As a commercial SME, we send a lot of electronic documentation, and before using Mailgun, our domain was constantly being blocked due to high bounce rates and invalid emails.

Mailgun automatically manages and filters these issues, which is crucial for our operations. The fact that they control the 'messy' side of email sending means our critical documents always get delivered, and our domain is safe. Their fast support is also a major plus. Review collected by and hosted on G2.com.

Honestly, once it’s set up, there's not much to dislike because it just works.

If I had to pick something, I'd say the initial setup and interface can be a little confusing. Getting the DNS records and the API integration done was complicated for a small company like ours that doesn't have a full IT team. It felt very technical at first.

It would be great if they had a super simple "Setup for Business Owners" guide, not just the technical docs. But again, once you get through that initial hurdle, it’s excellent. Review collected by and hosted on G2.com.

I love Mailgun's one-line API send, which means I can add just 5 lines of code and all my emails keep working forever without any server config issues. The templates and variables are amazing because I don't have to hardcode anything like “Hey {{name}}” again, which saves me hours every week. Batch sending is a huge plus as I can send 10k personalized emails in one call, completing the task in seconds rather than hours. The real-time webhooks are fantastic; they auto-clean the list the second an email hard-bounces, helping me avoid losing money on dead emails. Inbound routes are incredibly helpful because they automatically create tickets when customers reply, making me look professional without extra effort. Auto suppressions are a lifesaver, preventing me from accidentally spamming anyone who has unsubscribed or bounced, which preserves my sender reputation. The one-click unsubscribe handling is a big win, reducing angry replies and keeping my support inbox manageable. I appreciate the searchable logs that let me verify delivery quickly, often ending conversations within 30 seconds. The free sandbox domain for testing is also great because I can test every email flow right away without buying a domain. The two-click DKIM/SPF/DMARC setup is really convenient, and having a dedicated IP when I grow helps with scalability. Review collected by and hosted on G2.com.

{"Sudden account suspensions without warning – I wake up to my entire email flow dead because their bot flagged 'suspicious activity' (even on legit transactional stuff), and support ghosts me for days while users flood my DMs saying 'where's my reset link?!' Total trust-killer.","Pricing ramps up way too fast once I grow – Starts cheap for my MVP, but hit 50k emails/mo and bam—$35 base jumps with overages, plus dedicated IPs at $90+? I feel nickel-and-dimed when I'm just trying to onboard more users without rewriting my code.","Free tier got gutted and feels useless now – Used to be a lifesaver for bootstrapping, but now it's 30 days/5k emails then throttles hard to 300/day with 1-day logs only. I outgrew it in week 2, forcing me to pay sooner than planned.","Setup and dashboard scream 'dev-only' – No wizard for domains/DNS—I’m pasting TXT records at 2am and hoping I didn’t typo. The UI is clunky for quick checks; I end up in API docs more than the dashboard, which slows me down when I’m iterating fast.","Deliverability hiccups to Outlook/Hotmail – Gmail/Yahoo are fine, but 20-30% of my Microsoft users never see password resets or alerts. Their 'warm-up' advice is vague, and I waste hours tweaking content just to chase inbox placement.","Support is email/ticket roulette – No live chat or phone unless I'm on the $90 plan. A bounce spike or webhook glitch? I submit a ticket and stare at 'under review' for 48+ hours while my churn ticks up. Phone support as a paywall feels punitive.","Logs vanish too quick on basics – Free/basic plans keep logs for 1-3 days only—user complains 'I didn’t get the invoice' a week later, and I have zero proof to debug. Forces me to build my own archiving, which is dumb.","No built-in marketing tools or pretty templates – I'm stuck coding simple HTML for promos or 'trial ending' nudges, then pairing with Mailchimp for anything drip-y. Why not bundle basics so I don't juggle two dashboards?","Occasional outages or delays I can’t predict – Rare, but when their API hiccups (like that global queue issue last month), my whole signup flow breaks. No real-time status page alerts—I'm scrambling via Twitter instead of building."} Review collected by and hosted on G2.com.

The dashboard was simple to use, and sending bulk emails was smooth until my account was suddenly blocked. Review collected by and hosted on G2.com.

I had been using Mailgun for sending thousands of customer emails daily, and suddenly, without any prior warning or updates, they permanently blocked my account.

I received a generic email from support (attached below), but they refused to share any valid reason for disabling my account. Because of this, I lost all my work, email history, and campaigns that I had built inside Mailgun.

It’s extremely unprofessional for a company to shut down an account permanently without explanation or even a chance to resolve the issue. I relied on this service for my business, and this action caused a huge loss.

If you are planning to use Mailgun, please think twice — your account can be disabled anytime without notice, and you will lose all your data and effort. Very unreliable service! Review collected by and hosted on G2.com.

I love Mailgun's seamless integration, which has made it incredibly easy to send emails from the applications I develop. The reliability is excellent, and the API is straightforward to use, fitting perfectly into my workflow. I appreciate the scalability, allowing me to increase email volume as needed, and the pricing is reasonable. The free tier was a great start, and it has improved over the years. Review collected by and hosted on G2.com.

I would change the way the domain names are set up in the system. There are too many technical details that you have to put into your domain name DNS, and sometimes, novice users would get confused about that. Review collected by and hosted on G2.com.

Mailgun is a significant tool that enhances email deliverability, ensuring that the recipient receives the intended message

Mailgun has well documented APIs, with high flexibility and SMTP support

We get detailed email tracking, from delivery, feedback and even debugging when the email fails to be delivered

Mailgun has seamless scalability, which makes it efficient to handle multiple emails Review collected by and hosted on G2.com.

Mailgun demands some technical knowledge, for instance, setting up DkIM and DNS is hard for first time users

The more features the app offers, the more the price escalates or increases Review collected by and hosted on G2.com.