Hi Google Mail Experts,
We need some help refining Gmail filters. We have some accounts used for work purposes that should only communicate with specific accounts. For example, one of our after school programs has an e-mail address who ONLY corresponds with the directors of the after school sites for attendance work sheets. To keep these e-mail boxes nice and clean (and discourage the wrong address being used for the wrong purpose in case someone forgets to sign out) we would like the following:
1. ONLY accept e-mails from certain addresses. We seem to have accomplished this with a Gmail filter that includes the following in the "doesnt have" category - from: addressA OR from:addressB OR from:addressC. This seems to work, but seems like it would be more efficient if we could set it up to filter any e-mails that don't come from an e-mail in our address book. Is that possible?
2. Either way, the action we would like the filter to take is to delete e-mails that don't come from the proper places. This puts them in the trash for 30 days. Is there anyway to have Gmail delete them automatically (IE: purge the trash) upon deltion or speed up that interval?