Choose Your Mail Server
Stalwart (modern, all-in-one with JMAP), Maddy (minimal Go binary), or Postfix+Dovecot (battle-tested). Your stack, your choice.
v1.0 SHIPPED · OPEN SOURCE · AGPLv3
Your email lives on your hardware
DarkPipe is a self-hosted email sovereignty stack. A minimal cloud relay receives and sends your mail, then securely transports it — without storing it — to a mail server on hardware you control.
38K lines of Go
3 mail server options
7 migration providers
arm64 + x64
How DarkPipe Works
Internet
SMTP / TLS
Cloud Relay
VPS · Pass-through only
Home Device
Your hardware · Your mail
Cloud Relay
Postfix MTA · Certbot TLS · Rspamd · Monitoring
Encrypted Transport
WireGuard tunnel or mTLS · Zero-knowledge relay
Home Device
Stalwart / Maddy / Postfix+Dovecot · Webmail · Calendar
Everything you need for email sovereignty
A complete stack — from DNS authentication to webmail — running on hardware you physically control.
Encrypted Transport
WireGuard tunnel or mTLS — mail moves encrypted between your cloud relay and home device. Zero-knowledge relay, zero storage.
Offline Queuing
Home device goes offline? Mail queues encrypted on the relay with S3-compatible overflow. Drains automatically on reconnect.
Spam Filtering
Rspamd with greylisting, SPF/DKIM/DMARC validation, and conservative thresholds. Tunable to your comfort level.
Device Onboarding
QR codes, Apple .mobileconfig profiles, Thunderbird/Outlook autodiscovery. One-tap setup for every device in the house.
Migration Tools
Migrate from Gmail, Outlook, Yahoo, iCloud, Fastmail, ProtonMail, or Zoho. CLI wizard with dry-run mode. Bring your mail home.