[1] In 2011, Mailgun Technologies, Inc. was selected for Y Combinator's 2011 class, facilitating the company’s product and growth with early funding from the creators of Yahoo Mail, Gmail, and others.
[5][6] Mailgun was acquired by the private equity firm Thoma Bravo in 2019.
[8][9] In January 2021, Mailgun became a Pathwire brand alongside Mailjet[10] and their validations services.
[10] The Pathwire family of brands was shortly thereafter owned by the Swedish company Sinch in September of 2021.
[17][18] In 2021, one of Mailgun's customers, US-based Chipotle Mexican Grill, was compromised to send 120 spam messages in three days, and Mailgun prevented unauthorized access and launched an investigation in the account.