Hello, We're an ESP, we've been asking our clients to add an Expires: header (https://datatracker.ietf.org/doc/draft-billon-expires/) and one of them said they had concerns that a new header would confuse the antispam and that there's a risk emails would start getting junked or rejected.
I asked a few mailbox providers and antispam solutions already, they all told me there would be no (negative) change. For the receivers out here, how would _you_ react upon seeing a new header, and this header in particular? Of course if major mailbox providers on this list could share their thoughts about this, that would help me convince my clients but would also be useful for other ESPs and senders. Assuming that there's indeed no negative change in deliverability, obviously. Cheers, -- Benjamin BILLON _______________________________________________ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop
