qpsmtpd

qpsmtpd is a flexible smtpd daemon written in Perl.

Free software · smtpd.github.io

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What qpsmtpd’s own pages say

What it says it doesqpsmtpd is a flexible smtpd daemon written in Perl. smtpd.github.io
IntegrationsClamAV, SpamAssassin smtpd.github.io

Each value is a quote AirStack found on the product’s own pages, read 2026-11-05. A missing field means AirStack has not found it on its pages.