The best one was when someone said they were going to give me excellent service because “you work for corporate”, confusing the company name before vs. after the @ sign. I forget which company it was now but the agent was convinced I must be someone important.

I was torn between explaining and letting them believe it :-)

Most of the time, folks just don’t understand why their company name is in the address and they think it’s a mistake.

To be honest, I do tend to avoid this for anything other than throwaways because it causes too much confusion when I have to phone up, and I’m not really doing it out of a misguided belief it helps with spam (at least, it doesn’t help any more than security by obscurity is unsuitable as a singular defence, but maybe has a tiny role when layered into a broader strategy…)