I use several different email service providers, each for a different reason. I use Mailgun almost exclusively for inbound mail processing. The inbound processing also offers a preliminary spam filter so that at least most of the spam isn't sent further down my process chain. It's super easy to set up inbound routes using specific strings or wildcard matches that will accept mail and forward to multiple different recipients. These recipients can be either proper email addresses or webhook endpoints. I often use the address forwarders in combination with the SMTP outbound service to build a system where Gmail users can use their free gmail.com account to receive and send emails from their small business domain without having to sign up for and configure a proper G Suite account. I use the webhook forwarders in combination with Zapier and Integromat to receive any emails that need to be processed and automatically acted on. Mailgun normalizes all the different types of email and attachment encodings and packages the message data into an easy-to-parse JSON package that makes it super easy for me to grab what I need and reliably act on the normalized data.

Inbound mail processing with spam filter Free tier offers great sending limit SMTP and API integration for outbound messaging

This product doesn't offer any sort of backend mail building or sending functionality. It's only an engine for sending messages. This means you'll have to build your messages somewhere else and integrate them into your sending code.

Mailgun is a comprehensive email marketing service that provides businesses with the tools they need to create effective email campaigns and ensure deliverability. Its advanced features make it a popular choice for businesses of all sizes looking to improve their email marketing efforts.

The DMARC record validation and domain verification process is so smooth and generous that it increases your chance of landing in your prospect's inbox by almost 100%.

The pricing is higher than any other competitor products.

I've worked for quite some time with Apollo where they referred me to use a mailing service such as Mailgun to expand my email sending cap to over 200 emails/day. So I did. I created the account on Mailgun, ran a couple of tests, got familiarized with the API, and developed a standard operating process around it, took me 1 week.Everything went well in the testing phase.After sending my first batch of emails LIVE (oh the timing) I got my account temporarily disabled. I get to fill in a completely irrelevant form that was supposed to confirm the "legitimacy" of my business. My business is 100% legit. I got my account permanently suspended, because why not, and who cares? It is not illegal in any country to send cold emails. I haven't received any explanation, there was no warning before starting to use the app. Waste of time and money.

Yes, there are not too many things left to like at the end of the day.

Takes a lot of time to set up and requires a serious time investment compared to its competitors.Docs are messy and outdated/inaccurate.Extorsion tactics.They disable your account for no reason.There is no support.

We are solving transactional email needs for a startup I work as a CTO, does a great job there despite pricing not being flexible enough.

Mailgun is a service that was created by developers for developers. Their top-tier documentation and code is self-explanatory and should present no issues to integrate in just a few minutes. The service itself is reliable and has the latest bleeding edge features. Their customer support is very effective and can get issues solved promptly.

Mailgun's pricing has only gotten pricier and pricier with time. They are not even able to provide discounts that are not in their scheme and it is up to you to simply accept that when there are many competitors on this market. The service itself is very robust but this inconvenient made me think about other options after some above-base level features were needed.