- email cannot contain the '+' character (yes it can!)
- phone should be 10 characters long
I can go around the first problem but not the second one (I'm in France: country prefix (33) + number = 11 pos).
I understand the service is targeted at SF residents right now, but since it's available for "virtual" tasks, why be so restrictive?
So, I guess the real answer is that it is restrictive because that was what was easiest.. sorry :(
/^([\w\!\#$\%\&\'\\+\-\/\=\?\^\`{\|\}\~]+\.)[\w\!\#$\%\&\'\*\+\-\/\=\?\^\`{\|\}\~]+@((((([a-z0-9]{1}[a-z0-9\-]{0,62}[a-z0-9]{1})|[a-z])\.)+[a-z]{2,6})|(\d{1,3}\.){3}\d{1,3}(\:\d{1,5})?)$/i
Or you can just do some basic checks and verify it by sending an actual email.
You shouldn't need to worry about phone numbers, just use libphonenumber and you're done.