Mail on your own domain, kept on your own servers. You read and send it in the browser with OX App Suite, or with any mail program that supports IMAP and SMTP.

Screenshots are taken from the apps running on a test server, with made-up data.
What stays in your control
Postfix sends and receives your mail and Dovecot keeps the mailboxes, both on servers you control.
Mail uses the open standards IMAP and SMTP, so any mail program that supports them can connect and your mail is not tied to one vendor.
Outgoing mail is DKIM-signed, and mail is scanned by ClamAV.
OX App Suite, the webmail, is open source (AGPL-3.0) and runs on Kubernetes.
Open-source apps behind it
- Postfix
- Dovecot
- OX App Suite
- ClamAV
Alternative to
Microsoft Exchange Online and Outlook on the web; Gmail
How sovereign is your setup?
Score this feature and the rest of your stack in the free assessment.