My friend said that we can send mails to a gmail ID omitting the '.'. Still it goes to the same person.
For e.g the real email id is firstname.lastname@example.org.
Instead of using email@example.com in the To field he used firstname.lastname@example.org
He said he verified this with his account. When he tried to send using the second email id the mail got landed in his inbox. is it a real feature of gmail or there is some error in this.