foldername
Specifies the name of the folder from which to select messages.
If you omit the foldername, the folder to be used is determined
in the following order:
1. The current folder is used, if any (unless the /NEW qualifier
is specified)
2. The NEWMAIL folder is used if:
o You specify the /NEW qualifier
o You omit selection qualifiers and you have new mail
3. The MAIL folder is used.