# Mailgun funding: rounds and investors > Mailgun has raised $51M across 3 rounds since 2010. Investors include Y Combinator, SV Angel and Salesforce Ventures. Every round with its source. Source: https://millionrounds.com/company/mailgun (Millionrounds; every figure on the page links to its filing or article) United States · [Funded startup](https://millionrounds.com/companies) # Who invested in *Mailgun* 3 rounds we have observed, with the 9 investors named in them. Every figure came from a named source, and where the company reported a raise to the SEC itself, that is shown beside it. IT Services Martech Y Combinator: W11 Funding summary Updated 26 Oct 2026 **$51M** raised across 3 rounds since 2010, from 3 sources **$1.1M** Seed **$50M** Round - **Latest round:** Round, $50M Feb 2017 - **Step-up i:** 45.5× - **Investors:** 9 See who backed them ## The funding story Each circle is a round, placed by date and sized by amount. The line above is the running total. 2010 2011 2012 2013 2014 2015 2016 2017 **?** Seed **$1.1M** Seed **$50M** Round - **First round:** Seed - **Biggest round:** $50M - **Usual gap between rounds:** 5.8 years ## The rounds - **Feb 2017** Round **$50M** *2 new* [Rackspace](https://millionrounds.com/fund/rackspace) Turn/River Capital/ Scaleworks Reported by FinSMEs - **May 2011** Seed **$1.1M** *6 new* *1 returning* [Y Combinator](https://millionrounds.com/fund/y-combinator) [SV Angel](https://millionrounds.com/fund/sv-angel) [Salesforce Ventures](https://millionrounds.com/fund/salesforce-ventures) [Paul Buchheit](https://millionrounds.com/fund/paul-buchheit) [Webb Investment Network](https://millionrounds.com/fund/webb-investment-network) [Yuri Milner](https://millionrounds.com/fund/yuri-milner) [Geoff Ralston](https://millionrounds.com/fund/geoff-ralston) Reported by techcrunch.com - **Jan 2010** Seed **Amount undisclosed** *1 new* [Y Combinator](https://millionrounds.com/fund/y-combinator) Reported by techcrunch.com ## Who was in which round The busiest backers across the latest rounds. A filled square is a round they joined; a dark one, a round they led. **Seed** 2010 **Seed** 2011 **Round** 2017 [Y Combinator](https://millionrounds.com/fund/y-combinator) [SV Angel](https://millionrounds.com/fund/sv-angel) [Salesforce Ventures](https://millionrounds.com/fund/salesforce-ventures) [Paul Buchheit](https://millionrounds.com/fund/paul-buchheit) [Webb Investment Network](https://millionrounds.com/fund/webb-investment-network) [Yuri Milner](https://millionrounds.com/fund/yuri-milner) [Geoff Ralston](https://millionrounds.com/fund/geoff-ralston) [Rackspace](https://millionrounds.com/fund/rackspace) Turn/River Capital/ Scaleworks ## The exit Exit Buyer Price When Acquired [Rackspace](https://millionrounds.com/fund/rackspace) undisclosed Aug 2012 From historical deal records. Wrong? [Tell us](https://millionrounds.com/corrections?slug=mailgun). ## Everyone who backed them [Y Combinator](https://millionrounds.com/fund/y-combinator) Accelerator **2** rounds [SV Angel](https://millionrounds.com/fund/sv-angel) VC firm **1** round [Salesforce Ventures](https://millionrounds.com/fund/salesforce-ventures) Corporate VC **1** round [Paul Buchheit](https://millionrounds.com/fund/paul-buchheit) Angel **1** round [Webb Investment Network](https://millionrounds.com/fund/webb-investment-network) Family office **1** round [Yuri Milner](https://millionrounds.com/fund/yuri-milner) VC firm **1** round [Geoff Ralston](https://millionrounds.com/fund/geoff-ralston) VC firm **1** round [Rackspace](https://millionrounds.com/fund/rackspace) Corporate VC **1** round Turn/River Capital/ Scaleworks no record of our own yet **1** round Missing a round, or an investor who was in one? [Tell us](https://millionrounds.com/corrections?slug=mailgun). ## Also claim to have backed them This firm lists Mailgun as a portfolio company on their own website, but no report of a round names it. They are the firms' own claims, kept apart from the rounds above. [Scaleworks](https://millionrounds.com/fund/scaleworks) Private equity Per its own site ## Quick answers about Mailgun ### Who invested in Mailgun? Mailgun's investors include Y Combinator, SV Angel, Salesforce Ventures, Paul Buchheit and Webb Investment Network, and 4 more on record. ### How much has Mailgun raised? Mailgun has raised $51M across 3 rounds since 2010. One round did not disclose an amount, so the total is a floor. ### When did Mailgun last raise? Mailgun's most recent round was an Undisclosed round of $50M in Feb 2017. ### What was Mailgun's biggest round? Its most recent round, $50M in Feb 2017, is also its largest on record. ### Who backed Mailgun first? Mailgun's first round on record, in Jan 2010, was backed by Y Combinator. ### What stage is Mailgun at? Mailgun's latest named round is an Undisclosed round, in Feb 2017. ### Where is Mailgun based? Mailgun is based in the United States. ## Companies like Mailgun In the same sector, and raised in the last eighteen months. [**Different** $48M · Oct 2026](https://millionrounds.com/company/different)[**Gradient** $24M · Oct 2026](https://millionrounds.com/company/gradient)[**Chariot Claims** $23M · Oct 2026](https://millionrounds.com/company/chariot-claims)[**FlexCompute** $53M · Oct 2026](https://millionrounds.com/company/flexcompute)[**Subeca** $9.0M · Oct 2026](https://millionrounds.com/company/subeca)[**Negosh** $3.1M · Oct 2026](https://millionrounds.com/company/negosh) ## Find investors like these Search every investor by what they have actually funded, then narrow to your stage and market. Free. Open the investor searchOr these rounds in the app