email validation fix

[vinodhrajamuralidharan]

• - existing validation rule accepts the email without domain (test@gmail) - So, I've updated the rule.

Closes # .

Changes proposed in this pull request

[brandynbennett]

Can you please add tests and update the documentation.

[poteto]

Hi, thanks for the PR. I would recommend creating your own email validator in your project instead. The reason for this is that I am uncertain what the entire range of valid emails is under this new regex, and I think front end validation of emails should be very light.

[gczene]

@poteto the current one is too open, e.g.

• email@domain
• 'email@123'
• -@1
  are even accepted. Actually we had to provide our own regex (it is in this PR), but our suggestion with @vinodhrajamuralidharan to double check it .

Thanks

[poteto]

Please see #120 (comment)