Outsend and Mailgun
Mailgun has been running transactional email at scale since 2010 and has the deliverability experience that comes with it. The differences worth your time are about who owns the sending account, and how much of the provider's answer you get to keep.
Years of deliverability practice
A long operating history and a deliverability team that has seen the failure modes before. For a large sender who wants hands-on help, that experience is worth paying for.
Address validation as a product
Their validation service is mature and widely used. If cleaning an acquired list is part of your problem, it is a genuine reason to pick them.
Breadth of tooling
Inbound routing, analytics, and a large integration ecosystem built up over a long time. We cover less ground, deliberately.
Sending runs in your own AWS account
We send through Amazon SES, and you can point us at identities you already own and keep paying AWS directly for delivery. We are the control plane rather than the sending infrastructure, which means leaving does not mean re-verifying your domains somewhere else.
The raw SMTP response, kept
Every event stores the receiving provider's original response — the actual code, the reason string, and the host that said it — beside our normalised record. That is the difference between knowing a message bounced and knowing which limit you hit.
Independently operated
No venture capital and no parent group. The roadmap answers to the people sending mail through it, not to a portfolio strategy decided somewhere else.
Mailgun is a capable platform with real deliverability expertise behind it, and address validation is a good reason to choose them. Pick us if you would rather own the AWS account underneath and keep the provider's own words on every event.
We quote competitor prices in one place only. The price calculator shows each one with its source and the date we checked it. Confirm it on Mailgun's pricing page before you decide.
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Switching from Mailgun?
The migration guide has the field map, the event map, and the checklist — including the suppression-list import everybody forgets.
Never venture-backed · operated by Martin Business Consultants