Mailgun

Pros: Mailgun is working seamlessly with my custom portals business. The learning curve is pretty quick if you already understand DNS, Webhooks and APIs but if you don't Mailgun has plenty of instructions.

Cons: I don't have a dislike - it has worked perfectly. I tried a newer platform and it did not have all features as promoted. MailGun is the original best.

Pros: Ability to send out email blasts to clients on the regular basis instead of one at a time. Lots of time saved.

Cons: Need your own custom domain which is understandable for the sake of potential email spam which degrades the credibility of the platform.

Pros: Easy to use admin pages with lots of features, great documentation, great features, great support. The api is quick to respond, easy to use. Great!

Cons: Not much negative to say. Historically, the shared IPs has sometimes been blacklisted (was quite a while since last). However, when contacting the support they've quickly taken the out of rotation.

Pros: I appreciate its simplicity, reliable delivery, and strong inbox placement, which ensures excellent email results.

Cons: I believe the math behind the dashboard should be transparent. We noticed that some of them are not available in the documentation. I hope MailGun offers a certification program so I can become certified for this.

Pros: Easy to manage and domain management in more secure way And started using it with zero experience and it so good

Cons: Nothing here bad everything is great and even rate limiting and blocking emials in the middle but free trail can be used for phishing campaigns

Pros: It is well documented and easy to work with, which, as a developer, means quite a lot. It gives me the options, to keep my mail communication within the EU borders, which is key in my field working with EU businesses. Support has been superb thus far, those few occasions needed.

Cons: Yet to find any cons. It covers my needs perfectly. I am able to relay mails from self-hosted mail servers, along with using the API for my applications. Literally all I need personally, and these is covered nicely.

Pros: Robust API & Documentation: The RESTful endpoints are well‑structured and the SDKs (Python, Ruby, Node.js, etc.) make integration painless once you’ve read the docs. Advanced Email Analytics: Real‑time dashboards for delivery, bounce, spam complaints, and click rates give a clear picture of campaign health. Flexible Domain & Account Management: You can add multiple sending domains, set up sub‑domains for separate projects, and manage DNS records through the UI or API effortlessly.à Strong Security Controls: Two‑factor authentication, IP whitelisting, and granular role‑based access keep your credentials safe.

Cons: Steep Learning Curve: The sheer breadth of options (dedicated IPs, suppression lists, custom routing) can overwhelm newcomers; the UI feels more like a developer console than a user‑friendly dashboard. Pricing Complexity: While free tier is generous for low volume, the cost structure (per‑sent + per‑recipient, dedicated IP fees, and extra features) quickly adds up, making it hard to predict expenses without careful budgeting. Limited Built‑in Email Templates: Unlike some competitors, Mailgun doesn’t offer a visual template editor; you need to craft HTML yourself or use third‑party tools.

Pros: Excellent deliverability and reliability even at scale. It is a developer-friendly API & solid documentation.

Cons: Pricing can increase rapidly once you exceed small volumes or require advanced features. Additionally, some advanced settings may not be beginner-friendly, and you may require technical assistance.

Pros: Getting started is relatively easy, you have to setup what you have for this type of service, There are guides to accomplish most of things, and dev platforms are mostly pre loaded with mailgun integrations, which is a huge win

Cons: Prices are really good, as long as you "stay in your tier" It have happened a couple of times, we go way beyond our limit but also way below the next tier of pricing and the charges are easily 10X

Pros: They provide backward compatibility with their old API to reduce downtime during upgrades, especially for legacy systems where upgrading to the latest library or source code is not feasible.

Cons: The log retention period is very limited. Does not support multiple sub accounts with separate billing and separate payment methods.

Pros: Easy delivery to clients. Fast delivery even when I send out 1000 transactional emails. Easy to understand the onboarding part.

Cons: Yahoo delivery going to spam, even if I have all green in Mailgun. Delivery is affected and is no solution to use.

Pros: What I liked most about Mailgun is how easy it is to use and set up. The interface is intuitive, and the email tracking and validation features make testing and troubleshooting very straightforward. It’s a great tool for QA work and for ensuring that emails are being sent and received correctly.

Cons: What I liked least about Mailgun is that some advanced settings and logs are not immediately visible or easy to find across different domains. It takes a bit of navigation to locate specific details when troubleshooting.

Pros: It was very easy to integrate with my online platform (Django / HTMX stack), and provided a dashboard for checking problems as well as sandbox for testing.

Cons: Not had any issues at all that I can complain about, perhaps they could add some extra example code but I didn't need any myself.

Pros: Mailgun makes sending and tracking email for applications easy. The API and SDKs are straightforward, webhooks are reliable, logs are clear, and deliverability is strong. Integration, testing, and scaling are painless.

Cons: It’s not free, and costs can add up as volume grows. Some advanced features sit behind higher-priced tiers, and pricing for dedicated IPs or email validation can be confusing. I’ve also seen occasional minor UI slowdowns.

Pros: It works out of the box. Multiple development platform code available. I've been using the tool voor over 9 years now and it never failed on me.

Cons: I have at this moment no recollection of any part of the service that could be improved. The product seems very thought-thru.

Pros: Deliverability tooling, rich logs, and analytics clarified send status, improved by added SPF, DKIM, and DMARC support on suppression lists safeguarding reputation and getting transactional messages into inboxes on time.

Cons: Auth, webhooks, and routing configuration make learning difficult, and distributed vs. a single IP reputation management has to be actively monitored as volume is scaled up.

Pros: The only good thing was being grandfathered into their retired Flex plan, but even that couldn’t make up for their disastrous service.

Cons: Their automated system falsely flagged my SaaS, disabling all transactional emails without warning. Support was extremely slow making Mailgun completely unreliable for any business.

Pros: Mailgun is a great solution for digital marketing agencies, it has helped us fix website SMTP problems, and send marketing emails from specific email marketing softwares. It’s very low-cost and allows several domains in one account.

Cons: It can be confusing to set up the sending domains correctly when you don’t have much knowledge about how it works.

Pros: In a world where it is becoming increasingly difficult to have business email arrive in someone's inbox, Mailgun has been a great go-to for smaller web applications we've built on the WordPress platform. It is fairly easy to set up if you have experience with DNS, and pretty good instruction if you are not. There are a lot of tools to help you understand delivery, track bounces and analyze issues with your email.

Cons: Mailgun could use a wizard like interface for setting up a domain. Also it is a bit expensive if you are planning really large scale email delivery. The trade-off of course is that the cheaper services are not as easy to set up as Mailgun.

Pros: Overall performance of the tool when searching for messages sent by our internal software solutions.

Cons: It does what it is intended to do in our environment. Some users complain that we had to use other tools to manage marketing campaigns.

Pros: Quick and simple set up process regardless of technical capabilities. It is a simple and cost effective option for reducing the rate in which emails end up in junk

Cons: Often it defaults to the US server which can cause confusion when trying to find something. Can be clunky in reviewing what has been sent.

Pros: It connects my business with clients through my software for various communication needs, specifically email and text.

Cons: Not a lot to say here since I don't do much through the account other than pay a monthly fee to allow a bridge between their server and my software so I can send emails.