Every email.
Delivered.
Mailfy is email infrastructure for developers: a sending API for receipts and sign-in links, and campaigns and automations for everything else — with every step of every message on the record.
3,000 emails a month free. No card required.
curl https://api.mailfy.uz/v1/emails \
-H "Authorization: Bearer mf_live_…" \
-H "Idempotency-Key: order-1042-receipt" \
-d '{
"from": "Acme <orders@acme.com>",
"to": "ada@example.com",
"template": "receipt",
"variables": { "order": "1042", "total": "$48.00" }
}'email.queued12:04:07.112
Accepted. Domain verified, quota reserved, idempotency key stored.
email.sent12:04:07.398
DKIM-signed and handed to the provider.
email.delivered12:04:09.051
Recipient server accepted it. Your webhook was called.
email.opened12:11:44.630
Engagement events arrive the same way.
An API you can retry
Idempotency keys on every send, a stable error contract with machine-readable codes, and request ids you can quote to support.
Deliverability by default
DKIM keys generated for you, SPF and return-path records to copy, automatic DNS checks, and live sending only from verified domains.
Honest status
Test keys never deliver. Bounces and complaints suppress the address. Nothing is reported as delivered until a provider says so.
Marketing on the same pipe
Contacts, segments, campaigns and automations use the same queue, suppression list and quotas, with one-click unsubscribe built in.
From sign-up to first email in three steps
- 1
Create an API key
Test keys run the whole pipeline without delivering anything, so you can build before DNS is ready.
- 2
Verify your domain
Add the DKIM, SPF and MX records Mailfy generates. Checks run automatically until they pass.
- 3
Send
Use the REST API or the Node and Python SDKs. Get webhooks as each email moves.
Included on every plan
- Transactional API and batch sends
- Templates with versions
- Signed webhooks with retries
- Domain authentication
- Contacts, lists and segments
- Campaigns and automations
- Suppression list
- Analytics and event log