It is known that "+" sign cab be used to create unlimited virtual gmail addresses using one box! For example you have mailbox  [email protected], all addresses [email protected] are valid and will be delivered into your mail box. Good usage for this is leave not your direct email on site signups but something like [email protected], which can be filtered later.   For another cool address tweak see sub cat..

It is possible to insert any amount of Dots into username part. Like [email protected] is the same as [email protected].

Nice 😃