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We're the team behind Mailgun. Nice to meet you.

About Mailgun

Mailgun is the all-in-one, intelligent email delivery platform trusted by businesses, loved by developers.

Mailgun is how modern companies work with email. The platform’s ease of use, world-class support, and powerful APIs empower smart development teams to reach real customers at scale with a data-driven approach so their organization can grow faster.

Send and track your transactional and marketing messages effortlessly. Prevent fake signups and remove invalid email addresses from your list quickly. Partner with email experts to improve your deliverability and drive higher conversion rates.

Mailgun was founded in 2010 as a response to the lack of developer-friendly, API-based email services. The idea was to make it dead simple for developers to integrate email capabilities into your app. Since then, we’ve stayed laser-focused on deliverability and steered clear of shiny objects that won’t impact your success.

Today, Mailgun helps hundreds of thousands of companies and leading brands around the world send hundreds of billions of emails every year. We’re proud of what we’ve built, and this is only the beginning.

Our Mission

Creating the world's best email delivery platform

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A growing culture

As one of the fastest-growing tech companies with a 5x growth in our workforce since 2017, we've stayed true to our roots by hiring talented people who love solving hard problems.

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Nonstop support

When you’re happy, we’re happy. And we go out of our way to maintain our 98% average customer satisfaction score with 24/7 support provided by tech experts.

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Global coverage

Mailgun has data centers in the US and EU, allowing for global coverage for everyone. No matter where you are in the world, our cloud-based infrastructure gets it done.

Interested in joining the Sinch Email team?

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Our Mission

Solving the hard problems behind communications so you can build connected experiences

2010 - Mailgun was born

Two friends were building an app and needed to integrate transactional email. When they realized this capability either didn’t exist or didn’t work in other services, they set out to build it themselves.

2011 - Incubated by Y Combinator

Mailgun was selected for Y Combinator’s 2011 class, accelerating the company’s product and growth with early funding from the creators of Yahoo Mail and Gmail, among others

2012 - Acquired by Rackspace

Rackspace acquired Mailgun so their hosting customers could easily integrate cloud-based email services into their applications and websites.

2013 - Launch of email validations

Mailgun released the very first version of its email verification API to help customers improve their email reputation. Since then, the tool has become the fastest email validation service in the industry, based on real delivery data from billions of emails sent.

2014 - Mailgun introduces managed service

Mailgun started offering a dedicated, one-to-one email expert to help large senders achieve better deliverability and ultimately higher open and click rates.

2017 - Becoming an independent company

Mailgun spun out from Rackspace with $50M in growth capital from Turn/River Capital with participation by Scaleworks and Rackspace.

2019 - Acquired by Thoma Bravo

After iterating on our product set for several years, Mailgun received a strategic growth investment from Thoma Bravo, a leading private equity firm in the software and technology sector.

2021 - Acquired by Sinch

To better serve businesses across the globe, Mailgun was acquired by leading cloud communications provider, Sinch. Under Sinch, Mailgun connects email to the broader communications ecosystem alongside innovative SMS, Messaging, and Voice technologies.

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"Mailgun makes it easy to build and manage a large-scale email marketing application with thousands of customers sending millions of emails."


Chris Hexton

CEO & Co-Founder, Vero