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Gmail Plus Addressing[0] is very similar to what you're suggesting. [0]: http://webapps.stackexchange.com/a/2594 http://webapps.stackexchange.com/a/2594

• 0942v8653 12y ago
  The websites that are smart enough to count '+' as a valid character are probably smart enough to strip off that part when selling your email.
  • zachlatta 12y ago
    There might be cases where that is true, but I haven't found that to be the case. I've caught a couple services distributing my email with the '+' in it.
    • bbcbasic 12y ago
      Then bounce everything sent to the root.
    • deleted 12y ago
      [deleted]