I use email aliases that I can't send email from. It's also possible that email from your domain is blocked by mine, and I would never receive that invoice or p

I use email aliases that I can't send email from. It's also possible that email from your domain is blocked by mine, and I would never receive that invoice or password reset link. In reverse, there are addresses on my company's domain I can send from but not receive at, and I shouldn't be allowed to sign up with those.