Dovecot
dovecot.org · checked 8 Oct 2026
How it plugs in
—Public API
NoOpen source
YesFree tier
Signal on Email Server Software5.8#20 of 33
Dovecot Community Edition is an open-source email server.

Pricing
- Dovecot Community EditionOpen source · LGPLv2.1 license (with a few exceptions)Free
- Dovecot ProCommercial version · Get a quoteOn request
As dovecot.org lists them, checked 8 Oct 2026.
Near it
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