3 ms·
to be fair, the email RFC is a silly document that does silly things. The user part of an email address "may" be case-sensitive. But in practice, no one does t
by deckard1 6y ago
to be fair, the email RFC is a silly document that does silly things. The user part of an email address "may" be case-sensitive.
But in practice, no one does that. Because imagine grandma on the phone with her bank not remembering if her email address was Mary123@gmail.com, MARY123@gmail.com, or mary123@gmail.com. The horror.
- layer8 6y agoSome systems (used to) map the local part to local unix usernames, which are case-sensitive. Hence the sender would get a 550 No such user (or similar) if he got the case of the local part wrong.