@cks

It looks like it would be a 1-line patch to new-inject and ofmipd in DJB's mess822. Just drop the header in the very same way that they already drop "Bcc:".

Erwin Hoffmann could probably be persuaded to add it to s/qmail.

@cazabon

#InternetMail #privacy #qmail

@cks

You might find https://datatracker.ietf.org/doc/html/draft-melnikov-email-user-agent-00 helpful, for its list of MUAs, and amusing, in that the security and privacy concerns were "TBD".

And the collection of how-tos starts with https://unix.stackexchange.com/q/539561/5132 .

#InternetMail #privacy #mutt

@kevintechie @qurlyjoe @odo2063

It's generally not the direct-to-consumer hosting companies but the B2B and corporate e-mail world where one might find that this isn't the case, and minus and plus are just considered ordinary characters as of old.

There was a FediVerse post, alas that I did not bookmark, about a month ago where someone found yet another WWW site that didn't allow the plus character in its sign-up forms that require mailbox names. Still happens.

#InternetMail #qmail #Postfix

@qurlyjoe @kevintechie @odo2063

... that is not strictly true. It depends from how local delivery works and what MTS is in use. Some mail systems do this, others do not.

It was an invention of the 1990s, long after the invention of Internet mail itself. Not everyone copied it; it wasn't a plus sign originally; and some WWW site softwares that don't parse mailbox names correctly even end up mangling or outright rejecting it.

#InternetMail #qmail #Postfix

@wild1145 Spot the #Postfix user. (-:

Minus and (later on) plus as extension delimiters have been commonplace since the 1990s. People should really be able to cope with them by now.

#InternetMail