how to validate email in unity c#

ValidateEmail.cs

step 1-import the following
using System.Text.RegularExpressions;
step 2- define 
public  const string MatchEmailPattern =
		@"^(([\w-]+\.)+[\w-]+|([a-zA-Z]{1}|[\w-]{2,}))@"
		+ @"((([0-1]?[0-9]{1,2}|25[0-5]|2[0-4][0-9])\.([0-1]?[0-9]{1,2}|25[0-5]|2[0-4][0-9])\."
		+ @"([0-1]?[0-9]{1,2}|25[0-5]|2[0-4][0-9])\.([0-1]?[0-9]{1,2}|25[0-5]|2[0-4][0-9])){1}|"
		+ @"([a-zA-Z]+[\w-]+\.)+[a-zA-Z]{2,4})$";
    
    step 3-call the following function 
    
    	public static bool validateEmail (string email)
	{
		if (email != null)
			return Regex.IsMatch (email, MatchEmailPattern);
		else
			return false;
	}

not work with email that host has a number prefix

working Well

Thanks!!
This definitely works for the most common email address not for the valid and STRANGE cases, any ways, who uses something like "[email protected]" (valid email address)? haha.

some others to test: https://en.wikipedia.org/wiki/Email_address