On Gmail addresses adding a + before the @ gives flexibility to the address. Does it work on other providers?

Never heard of it before, so it must be unique to Gmail. : )

http://mailnull.com/

”...if your MailNull account name is ‘dave’ and you buy a book from amazon.com, you could give the following email address to Amazon: dave.amazon@mailnull.com…”

Weird

@jaytkay interesting, MailNull gets the same result as Gmail yet doesn’t break the protocol. Well at least I presume Gmail has broken protocol, as so many web forms don’t allow one to enter a + sign in an email box.

A nugget of information anyway: if you registered johndoe@gmail.com you can put dots wherever you want and the mail will still reach you. j.ohnd.oe@gmail.com and all the other combinations.