If I have the pro version, I understand that I can have unlimited gmail accounts at once. Is there a way to set this up quickly (importing?) or does it need to be set up one at a time?
Yes, the Pro license allows you to have an unlimited number of accounts. Where would you like to import the accounts from? Unfortunately, even if imported from another program, it is necessary to type in your password through the Google verification window, which is a Google security requirement. We’d therefore say it’s probably better to set them up one at a time.