Run your own mail server, not someone else's API

SMTP, DKIM signing, and a scoped REST API for every domain you own — self-hosted, not billed per message.

_dkim._domainkey.yourdomain.com  TXT
v=DKIM1; k=rsa; p=MIGfMA0GCSq...
Verified

Features

Domains, signing, and API access

The three pieces that make self-hosting worth it.

Custom domains

Point any domain here — DNS verification is automatic.

Signed, not just sent

Every message is DKIM-signed and delivered by your own SMTP server.

Scoped API keys

Per-domain, per-account permissions — nothing more than a key needs.

Add your first domain in minutes

DNS verification, DKIM signing, and SMTP are ready as soon as you connect a domain.