Originally Posted by
jonu
Can Gmail be used transparently with one's own domain name (i.e. it is not readily apparent to others that you are using Gmail)?
Haven't dealt much with google apps, however its easy to set up in a preexisting gmail account... basically go into
Settings and click on
Accounts. From here is the option to "Send mail as

Use Gmail to send from your other email addresses)"
From here you can choose a default 'from' email, and also choose to reply to incoming messages via the same email address.
Apparently this is called Mail Fetcher and here's more info...
link