Add Editheader Sieve extension
It is my understanding that the deleteheader and addheader actions could be used to effectively modify the subject of an e-mail.
https://datatracker.ietf.org/doc/html/rfc5293
https://superuser.com/questions/1502588/how-to-change-a-messages-subject-in-a-sieve-rule
2
votes
Todd
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