5 ms·Too many sites disallow the + thing. It's not a great solution.by sfopdxnonstop 8y agoToo many sites disallow the + thing. It's not a great solution.__david__ 8y agoSendmail and postfix both allow you to configure that. I have my mail set up so '+', '.', and '_' all work the same. I've never seen any site deny the '.' or '_' character.Ayesh 8y agoIf you run your own mail server, you can simply catch-all. The + trick is for the rest.