More likely just a default. I built the authentication system on our website and as a regular user of Gmail + aliasing I was very surprised when my brother poi

More likely just a default. I built the authentication system on our website and as a regular user of Gmail + aliasing I was very surprised when my brother pointed out our website didn’t allow them. Turns out the default for Microsoft’s ASP.NET Identity Framework is to disallow special characters, but simply setting a flag in its configuration rectified this.