I have received all manner of email such as secure military documents (US, UK), political documents (EU, IRL), etc.I started facing the same problem - yes I am receiving someone else's emails - since 2011.
removing the dots) to create the base, hidden userid.
Thus, creating the new one didn't detect a duplicate.
Domains und DNS-Service unter dem Mailtausch der Zukunft!
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Thus, I live with the occasional notice from the bank, school, etc.
Because of this, I no longer use Gmail for anything important or confidential.
As for as I know, there is nothing in the RFCs that disallow this; MDAs are largely allowed to route mail as they see fit, hence the support for aliases, filtering, and forwarding.
In that light, ignoring dots is no different that creating aliases. If you'd like to have a dot in your username, please ask your domain administrator to add your preferred username as a nickname.
Gmail doesn't recognize dots as characters within usernames, you can add or remove the dots from a Gmail address without changing the actual destination address; they'll all go to your inbox, and only yours. [email protected] these addresses belong to the same person. I'm guessing for some reason they took a design decision not to treat dotted addresses differently to avoid emails being routed to the wrong person. if [email protected] getting [email protected]'s emails. Gmail likely supports this use of periods in email address in order to comply with the IETF's email address formatting standards.
In short: [email protected]= [email protected]@= [email protected]@= Homer. You can see this if you try to sign in with your username, but adding or removing a dot from it. If you'd like something less verbose, Wikipedia's page on email addresses simplifies understanding their use (and probably reasoning) well.
We were able to determine that only a portion of email "leaks" across accounts.