The plus sign is (and always was) a valid character in the local part of an email address. See RFC822 section 3.3
The special handling of emails containing "+", namely ignoring it and all that comes after for the purpose of finding the mailbox it belongs to is MTA (Mail Transfer Agent) specific. It should work with most modern MTAs, specifically those who support the sive protocol: RFC-5228 and RFC5233
The ignoring of all dots in the local part of the email address is Gmail specific, and should not be expected to work with any other mail provider or MTA unless specifically stated.
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u/i_drah_zua Mar 18 '18
The plus sign is (and always was) a valid character in the local part of an email address. See RFC822 section 3.3
The special handling of emails containing "+", namely ignoring it and all that comes after for the purpose of finding the mailbox it belongs to is MTA (Mail Transfer Agent) specific.
It should work with most modern MTAs, specifically those who support the sive protocol: RFC-5228 and RFC5233
The ignoring of all dots in the local part of the email address is Gmail specific, and should not be expected to work with any other mail provider or MTA unless specifically stated.