How to mark sent messages with asterisk?

[Ross A. Laird]

My sent IMAP mail goes into the Sent folder on the remote IMAP server.
It shows as unread mail in that folder. I'm not too savvy about how gnus
expires emails, so I tend to mark everything (sent, archived, etc.) with an
asterisk so that it won't be expired. So I suppose I have two questions:

1. Does sent IMAP mail in a remote IMAP folder get expunged by the gnus
expunge routines?

2. How can I automatically mark the sent emails with an asterisk so that
they are not expunged in any event?

Thanks in advance.

Ross

-- 
Ross A. Laird, PhD
www.rosslaird.info