Everything your email touches, in one place.
Mailway sits between your app and the providers you already pay for — routing, failover, a searchable archive, and proof of delivery, without changing how you send.
An email gateway sits between your application and its email providers: your app hands a message to one endpoint, and the gateway decides which provider carries it, retries when one fails, and keeps the record. Mailway is that layer for transactional email — a config change to adopt, standard SMTP or HTTP in, your own provider accounts out.
The four pillars below are the product: a byte-for-byte archive, automatic failover, a per-message timeline, and signed proof of delivery. Everything is BYOK — Mailway routes and records, your providers deliver, and delivery is billed by them at their prices.
The whole migration
is a config change.
Point your app at Mailway
Swap host, port, and credentials in the mailer you already use — Nodemailer, Laravel, Rails, smtplib, whatever ships your mail today. 7 SMTP ports open, so it works even where your cloud blocks the usual ones. Prefer HTTP? There's a REST API.
Paste in the keys you already have
Add your provider API keys, assign them to projects, pick failover, free-first, round-robin, or random per project. All from the dashboard — no deploy, no DNS archaeology.
Mailway takes it from here
Routing, retries, suppression, logging, archive. The next time someone asks about an email, you look it up instead of guessing — and switching providers never touches your code again.
Your app doesn't have a sent folder.
Mailway gives it one.
Every mail client keeps what you send. Your app — which sends more consequential email than you do — keeps nothing: receipts, reset links, and contracts vanish the instant SMTP takes them. Mailway archives each message exactly as sent and makes it searchable like a mailbox. So when finance asks about an invoice from last March, you open the email itself — not a log line that mentions it.
Providers fail.
Your email shouldn't.
Your app hands off once, gets 250 OK, and moves on. Mailway reads whatever the provider says back — a timeout, a rate limit, an empty credit balance — and reroutes in milliseconds. Here's a genuinely bad day, handled without a single page going out:
Four routing strategies
Primary provider first. On timeout, rate limit, or outage, the next one takes over automatically — with exponential backoff.
Spend every provider's free tier before a single paid send — paid rates only kick in once the free capacity is gone. Exhausted providers stay available for failover.
Distribute volume evenly across providers. Balance spend, spread sender reputation, and stay under per-provider rate limits.
A coin flip per message. For when you want the volume spread and nothing else to think about.
Not all errors are equal
Hard bounces are never retried — the address goes straight to your suppression list, where it stops hurting your sender reputation. Everything recoverable fails over. Nothing gets retried into a blocklist.
250 OK is not
the whole story
Most providers stop at "accepted" and wish you luck. Mailway follows the message the rest of the way — every attempt, every provider response, every error code, down to the raw SMTP session. So when support asks "did that email go out?", you answer with a timeline, not a shrug.
And because every provider you use reports back into the same gateway, outcomes land in one normalized delivery history — an SES bounce and a Mailgun bounce read the same, side by side. No single provider can see across your whole sending; the gateway in front of them can.
- Search by subject, sender, recipient, or state
- Real outcomes — delivered, bounced, complained — in one vocabulary across providers
- A hard bounce learned on one provider blocks the address on all of them
- The raw SMTP session, kept for every connection
- Per-project analytics and 30-day volume
of Delivery
"I never got that email."
Here's the receipt.
Every message is archived with its raw MIME and original DKIM signature, and can be turned into an Ed25519-signed proof-of-delivery certificate, countersigned by an independent time authority so it can't be back-dated. The signature verifies in anyone's browser — no need to trust our database, or us. Share the rendered email itself with a privatemailway.to link, and settle the dispute instead of having it.
90 days on Pro, 6 months on Team, 1 year on Business, unlimited on Enterprise — with 3-to-7-year add-ons for SOX, HIPAA, and FINRA record-keeping. All of it EU-hosted, all of it searchable.
Your mailer config has
one line to change
Mailway is in private beta — we onboard teams one at a time. Leave your email and we'll send your invite when it's your turn.