On 1 Mar 2018, at 11.17, Alessio Cecchi <alessio@skye.it> wrote:

Il 01/03/2018 07:11, A.L.E.C ha scritto:
On 02/28/2018 10:20 PM, Timo Sirainen wrote:
 + mail_attachment_detection_options setting controls when
   $HasAttachment and $HasNoAttachment keywords are set for mails.
Is this a new feature? I can't find any documentation about these keywords and configuration.

Hi,

from

https://software.open-xchange.com/products/dovecot/doc/Release_Notes_for_Dovecot_Pro_2.2.34_2018-02-28.pdf

NEW FEATURE DOV-1221:
Attachment indicator
Mark email attachment presence using $HasAttachment / $HasNoAttachment keywords

Also added https://wiki2.dovecot.org/AttachmentIndicator - need to figure out where it should be linked from..