Gmail gives you a second id without asking

Today I received a spam mail and it wasn’t addressed to me, somehow it escaped Google’s mail spam filters and reached my inbox. When I opened to see the mail it wasnt addressed to my mail id instead it was a id very similar to my id just without the ‘.’ dot.

And later learned that Gmail reserves all combinations of the name when we create our account. So if I create an account with, it reserves and even So any mail addressed to these ids will reach you !!

Original id  :

Automatically created ids : ,