4 ms·
Plusses are an optional part of a standard[1]. The main email standard does not require a+b@c.com to be treated the same as a@c.com [2]. [1] https://tools.ietf
by Buge 9y ago
Plusses are an optional part of a standard[1]. The main email standard does not require a+b@c.com to be treated the same as a@c.com [2].
[1] https://tools.ietf.org/html/rfc5233 https://tools.ietf.org/html/rfc5233
[2] https://tools.ietf.org/html/rfc5322#section-3.2.3 https://tools.ietf.org/html/rfc5322#section-3.2.3
- 0x0 9y agoAnother interesting part of dots in emails is that they apparently can't be at the end of the username, EXCEPT if you also "quote" the entire username. So, <a.b.@example.com> is probably invalid but <"a.b."@example.com> (including the "quotes") is supposedly valid. Had an acquaintance who was signed up to a popular email service with "a.b." (their initials) for years until they changed their underlying platform, after which they actually were very sorry to let him know that they could not support his strange email address any more and terminated the account.
- shkkmo 9y agoThe use of pluses for tagging/subaddressing is an optional part of the standard. + being valid in an email address is not an optional part of the standard.