On Tue, 10 Jan 2023 23:45:09 +0100 Liam Proven <lproven@gmail.com> wrote:
P.S. the generally accepted netiquette is that a signature should be a max of 4 80-column lines. ;-)
I don't think so. Four lines yes, eighty characters no. RFC5322 says "There are two limits that this specification places on the number of characters in a line. Each line of characters MUST be no more than 998 characters, and SHOULD be no more than 78 characters, excluding the CRLF." So that says 78 rather than 80. And then it refers to the MIME RFCs which specify 76 (4x19) and indeed if we look at the source of the last line of the signature in your email we find: (elision to be sure to fit it on one line because my MUA wraps early) UK: (+44) ... WhatsApp/Telegram/Signal]: (+420) 702-829-= 053 and surely enough the mail system has split your carefully engineered 78 character line into two lines so that neither exceeds 76!