The exact message, when someone asks.
Mailway keeps what your app sent, from HTML and text to headers, attachments, and the original DKIM signature, for as long as your plan keeps it.
What Mailway keeps depends on how the mail arrived. Mail relayed over SMTP is stored byte-for-byte: the MIME source with its HTML and text parts, headers, attachments, and the original DKIM signature. A send through the HTTP API has no MIME source of its own, so Mailway keeps the JSON request it accepted (the validated body, stored as UTF-8) and renders the mail's HTML and text from it.
Retention follows your plan: 30 days on Free, 1 year on Business, custom on Enterprise, with add-ons (+1 year, +3 years, +7 years, or unlimited) for SOX, HIPAA, and FINRA record-keeping. At the end of the window the content is deleted; the delivery record (sender, recipients, subject, and states) stays for the life of the account (retention).
Your app doesn't have a Sent folder.
Mailway gives it one.
Every mail client keeps what you send. Your app sends the more consequential mail and keeps none of it: receipts, reset links, and contracts vanish the instant SMTP takes them. Mailway archives each message exactly as sent, searchable by sender, recipient, subject, and state. So when a customer complains and legal asks what exactly was sent to them, and when, you open the emails themselves instead of a log line that mentions them, for as long as your plan keeps them (30 days on Free, a custom window on Enterprise, up to unlimited with a retention add-on).
And it doesn't have to be a developer who looks. Give support or legal a member seat and they answer "what did we send?" themselves, only for the projects you give them.
“Can’t we just BCC ourselves?”
You can, and plenty of teams start there, or log every send to a table. Both give you a copy of something. Neither gives you the message your app sent next to what happened to it.
of delivery
“I never got that email.”
Here’s the receipt.
Every SMTP-relayed message is archived with its raw MIME and original DKIM signature. Any mail a provider accepted can be turned into an Ed25519-signed proof-of-delivery certificate, countersigned by an independent time authority so it can't be back-dated, and the certificate says whether it proves acceptance or delivery. The signature and the timestamp verify in anyone's browser, with no call to our database; compare the certificate's key with Mailway's to know it came from us. Share the rendered email itself with a private mailway.to link, and settle the dispute instead of having it.
Certificates are included on Business and up, and share links on Pro and up. Free has 1 limited share link a month.
30 days on Free, 90 days on Pro, 6 months on Team, 1 year on Business, custom on Enterprise, with retention add-ons (+1 year, +3 years, +7 years, or unlimited) for SOX, HIPAA, and FINRA record-keeping. All of it EU-hosted.
Your mailer config has
one block to change
Mailway is in private beta, and we onboard teams one at a time. Leave your email and we'll send your invite when it's your turn.