3 ms·
Not quite the same thing, but there are official email headers for unsubscribing from email mailing lists. https://tools.ietf.org/html/rfc2369 https://tools.iet
by IAmLiterallyAB 8y ago
Not quite the same thing, but there are official email headers for unsubscribing from email mailing lists.
https://tools.ietf.org/html/rfc2369 https://tools.ietf.org/html/rfc2369