Hey Tim, I've seen this before in other packages you've created, the regex you use to validate e-mail addresses is much too limiting. I was testing uCommerce and entered an e-mail address like [email protected] but it got rejected for some reason. Then I tested [email protected] and it also got rejected. 

The second rejection is actually supposed to happen for the regex that is in there, but this is a completely valid e-mail address according to the official RFC 2822 standard. Gmail uses this notation so you can have aliasses ([email protected] and [email protected] will both go to [email protected]).

The first rejection is a bit of a riddle to me though, the regex should validate this address just fine! As soon as I changed the regex to the one below, the comments went through though...

This regex comes from this article, which shows different expressions to validate an e-mail address and I've found that the last one in the article works great.

[a-z0-9!#$%&'*+/=?^_`{|}~-]+(?:\.[a-z0-9!#$%&'*+/=?^_`{|}~-]+)*@(?:[a-z0-9](?:[a-z0-9-]*[a-z0-9])?\.)+[a-z0-9](?:[a-z0-9-]*[a-z0-9])?