That is, you'll receive each message individually as soon as it's sent to the list. Switching back and forth is easy. Just subscribe to the other format and the server will take care of switching your address. Every morning when I check my email there are one or more bounce digests waiting for me. These are collections of all the bounced messages from the day before.
Bounces occur for any one of several reasons.
Possible reasons include bad addresses, server malfunctions and full mailboxes. I run these digests through a script that helps me determine if someone's messages have bounced for four days straight. Our software is smart enough to figure out that you want to switch from the digest to the list. When posting messages to the mailing list, please take a moment to make your Subject line count. Here are some examples to get you started.