Gmail ignores dots (.) in the username part of email addresses and treats everything before a plus sign (+) as the main email address.
For example:
john.doe@gmail.com and johndoe@gmail.com are the same inboxjohndoe+amazon@gmail.com and johndoe@gmail.com are the same inboxThis tool helps you create variations of your Gmail address that all deliver to the same inbox but appear as different addresses to websites.