Password Protect a Mailbox?
Clint Bradford
17" Matte MBP 2GB 2.16GHz Seagate 320GB 7200.4, Mac OS X (10.6.6), OWC, WD, and SmartDisk backup drives.
17" Matte MBP 2GB 2.16GHz Seagate 320GB 7200.4, Mac OS X (10.6.6), OWC, WD, and SmartDisk backup drives.
I think this is possible,because the mac mail folder structure is clear,so you can password protect only one mailbox
see How to password protect only one mailbox in Mac Mail for more details.
Password Protect a Mailbox?