Add the option to tune the "DKIM-Signature" header
According with RFC 8058 "Signaling One-Click Functionality for List Email Headers" (https://tools.ietf.org/html/rfc8058) in order to use the header "List-Unsubscribe" this must be included on "h" tag of DKIM sign, nowadays only "From:To:Subject;" are included on DKIM-Signature.
The idea is to allow the option to include additional information on the Plesk generated "DKIM-Signature" "h" tag.
11
votes

Thank you for your input! We will consider this functionality in upcoming releases if it will be popular.
Everyone, please continue voting for this feature if you consider it important.
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IG