Mailgun

Leading developer-focused email API provider with strong presence in transactional email market

Mailgun is an email service provider that offers a powerful set of APIs for sending, receiving, and tracking emails. Founded in 2010, the company provides developers and businesses with infrastructure for transactional and marketing email delivery, featuring advanced analytics, email validation, and deliverability optimization tools. Mailgun operates as a subsidiary of Sinch AB, a Swedish cloud communications company that acquired it in 2021. The platform serves thousands of companies ranging from startups to large enterprises, processing billions of emails monthly. Mailgun's developer-first approach includes comprehensive documentation, flexible APIs, and robust email infrastructure that handles the complexities of email delivery, spam filtering, and inbox placement. The service is particularly popular among SaaS companies, e-commerce platforms, and applications requiring reliable transactional email delivery. While not strictly an AdTech company, Mailgun operates in the MarTech ecosystem, providing essential email infrastructure that supports marketing automation, customer communications, and email campaign delivery. As part of Sinch's portfolio, Mailgun continues to operate as a distinct brand, maintaining its focus on email API services while benefiting from integration opportunities within Sinch's broader communications platform.