Last message store

I would like to do the following.  In Pine, I can access Pine e-mail
message.  Outside Pine, I cannot access Pine e-mail messages.

I don't like that. I guess I can't change this.  But I think I would be
able to easily access the last message put in a folder.  I'd like to do
this.  Simply copy a message to a file.  When a message comes in, it would
be stored in file 'lastmsg'.