Same "subject" in too many recepient
When i see the same subject in 10 o 20 messages from outside world to inside domain with different address (eg: a@one.it, b@two.com, c@three.net) theese messages are sure fake mail. I would like to add XX point to hash subject each day
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vote

Hello Carlo,
Thank you for sharing your idea to flag messages that have the same subject. I’m concerned that an option such as this might cause too many legitimate messages to be flagged, however, we will consider it for future versions.
Thanks again,
Arron