> > > Are there other characters that are legal?
'+' is often used as a sub-address delimiter. GMail uses it to allow you to create 'disposable' addresses. Users may use it to create mutliple accounts for a single GMail account. > A quick search for patterns for > legal email addresses was a bit inconclusive, but it seems that most of > the "dangerous" characters are illegal in email addresses, anyway. It felt > safer to pick the safe characters than to try to remove the unsafe ones. > And since email addresses are already unique... > Ok, I just typed the below response, and then figured that you meant that "_.-" where being left in, not stripped out. My bad. In that case it's probably fine, apart from perhaps the '+' case above. Martin ## It's only likely to be problem for people who use large email providers - Yahoo, Gmail, Hotmail, etc. ## ## You end up with: ## ## john_sm...@gmail.com ## john.sm...@gmail.com ## john-sm...@gmail.com ## johnsm...@gmail.com ## ## all mapping to johnsmith_at_gmail.com ## ## Again, unlikely to happen, but if you implement it that way then it's almost certainly going to crop up. ;-)
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