Validate plus address against a root address

Program.cs

using System;
					
public static class Program
{
	public static bool IsPlusAddressUsed(string plus, string root)
	{
		var parts = plus.Split('@');
		var formattedEmail = $"{parts[0].Split('+')[0]}@{parts[1]}";
		return formattedEmail == root;
	}
	
	public static void Main()
	{
	        var email = "[email protected]";
	        var plusAddress = "[email protected]";

		Console.WriteLine(IsPlusAddressUsed(plusAddress, email));
	}
}