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Gmail could let you specify a list of valid addresses: first.mid.last, firstmidlast, firstmid.last Any others bounce or display the warning header suggested i

• mulmen 9y ago
  That's exactly how it works today with the added benefit that the user does not have to enumerate the list and it's hard for other people to squat on slight variations to your email.
  • rocqua 9y ago
    Canonization for deliverarbility (the enumerated list) can differ from canonization for uniqueness check (ignore all dots).
  • nebulous1 9y ago
    That isn't how it works today. They do not display any warning, and you have to hover your name to see what address it was sent to.
    • Avamander 9y ago
      The infuriating part is that one can't reply from the address it was sent to, only from the one that's primary.
      • 0xCMP 9y ago
        Yes, in fact this is one of the more annoying parts of this feature. When you're doing a support thing you usually have to reply with the exact same email. In my Google Suite account I have many domains setup to a single account and often times a reply uses my main account instead of an alias+domain I've setup on the account which received the email. Would be nice to be able to easily reply as any of those combinations and default to the one it was sent to (dots, +'s, and domain).