For example, it doesn't matter whether the email is addressed to johnsmith@gmail.com or john.smith@gmail.com — both will be delivered to the same mailbox.
As Google explains on its support blog, every e-mail address is unique. People can't set up an identical account by using a different number or placement of dots, it says.
In addition, it doesn't matter if the e-mail is addressed with @googlemail.com at the end or just @gmail.com — it will end up in the right inbox, according to the blog. — dpa