I'm trying to create a validation expression for a BizForm, but it doesn't seem to be working.

I need to validate an e-mail address. The rendering of the default email input has no label, so we are using a regular text input.

When I use this regex, \w+([-+.']\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*, which should recognize an email address, it always fails. This is a bit perplexing because this has worked for us on dozens of other sites.

Any ideas about what's going on?