Open-source email platform for transactional, marketing, and product messaging via REST API, SMTP relay, or SDKs, featuring campaign editor, list and domain management, analytics, webhooks, template support, suppression lists, and flexible hosting options.



































































Mailgun vs. Sendgrid feels a bit like Apple vs. Microsoft: Mailgun is fun, and the features seem designed around problems and use cases, whereas Sendgrid feels like a jumble of configuration options at times. I tend to reach for AWS SES these days, but if we're building outside of the AWS stack, I'll always go for Mailgun.