> imagine that you have an address [email protected]

> imagine that someone else has an address [email protected]

If gmail ignores dots, it shouldn't be possible to have name.surname and namesurname as two separate gmail accounts.

that makes no sense, Gmail ignores the dot so both those email addresses are the same and can only belong to one person.

if you register [email protected], then you also every combination of it with a dot.

[email protected]

[email protected]

[email protected] etc..

>because she has no dot in email, but the other party has a dot

And that's exactly the issue Gmail solves by ignoring dots. There cannot be two different accounts differing by dot(s).

Not for gmail though; gmail ignores those dots. But [email protected] is normally a different inbox if the local part drops the dot.

> Not for gmail though; gmail ignores those dots. But [email protected] is normally a different inbox if the local part drops the dot.

My own mail server is configured to use a different character besides the `+` for tags and its notion of "same account" is defined by a mysql query. There's no way to know the interpretation of the local part in advance: you can apply various heuristics if you don't mind annoying people; or you can accept the email and verify it by sending an email.

Similarly, I configured my mail server to use the system "tag.user@domain". So you can't use the same heuristic as gmail, because if you try to do an untagged email, you likely just give the tag, which doesn't correspond to a user.