You can, although not from within the program. Right mouse on the folder in the folderslisting and go Folder information.You will find the file name in there.
Now close down Pegasus Mail and go to the Home mailbox directory. Copy (do not move) both the <name>.PMM and <name>.PMI file to any other place you want. Restart Pegasus Mail and delete the folder.
To restore, just copy both files back and restart Pegasus Mail.
FYI:
* Problems after restoring mailbox files from CD-ROM *
Q: I backed up my Pegasus Mail mailbox directory to CD-R (or CD-RW or DVD or whatever) and restored it after a hard drive replacement (or Windows OS reinstall). Now everything is behaving very strange. I cannot delete new mail messages and my mail folders say they are corrupted. Also, I can't make changes nor add addresses to any of my address books. Additionally, changes to my WinPMail configuration settings don't get saved anymore. What's going on?
A: When you restore files from CD-ROM-based technology, the OS usually sets read-only flag on each of the files. Thus, WinPMail cannot make changes to the files anymore. To fix this, select all the files in your mailbox directory and press Alt-Enter (or right- click on the files and choose Properties from the popup context menu). Uncheck the Read-Only checkbox and click OK.
Han van den Bogaerde - support@vandenbogaerde.net
Member of Pegasus Mail Support Group.
My own Pegasus Mail related web information:
http://www.vandenbogaerde.net/pegasusmail/