Congrats on your success! As for GMail, my 2 cents is that it's an unprofessional image to project using anything other than your own domain for email. I use Fa

Congrats on your success! As for GMail, my 2 cents is that it's an unprofessional image to project using anything other than your own domain for email. I use Fastmail with my own domain right from the start on my projects. Get a domain for a year & add it to a 'Professional' Fastmail account & set up an alias. The initial 'Professional' account setup is the expensive part if there is any to be considered expensive. I think it's worth while. Good luck, however you do it.