Google mail is a great way to run multiple domain addresses as it can reply from the address it was sent too, try that in Outlook!
One annoying problem for me is sometimes it “has difficulty” sending the email from your domain, maybe a timeout on the server or some other network issue. When this occurs Google will “kindly” forward your email using your gmail account instead. Now this sounds reasonable but it’s annoying if you have your own business and you are effectively replying to customers with a free gmail account, that looks so unprofessional.
This is a little suspicious as Google doesn’t have an equivalent of the old hotmail footer advertising that this person uses free email and you can get yours here link; but effectively this is a gmail advert through the backdoor. People will see you are using gmail and therefore endorse it. But worse than that it is confusing for the recipients as it wouldn’t be the same email they sent to originally.
It happened to me so many times in July that I was about to start using my own webmail service and drop gmail then while changing the settings on one of my accounts I spotted a new setting, goto “settings” (top right of menu on gmail page) then click on “Accounts and Import” then in the “Send mail as:” section “edit info” on your domain click next and you will see something like:
Once you put in your SMTP servers settings gmail will only send through this and you shouldn’t see the dreaded free email address again. Since changing this I haven’t had the problem, if you do have any issues with it let me know.