The Bottom Line
- Simple, but effective against spam and viruses
- Mailbox Filter isolates attachments and scripts
- Can require authorization keys for trusted senders
- Mailbox Filter is hard to grasp and difficult to use
- Spam filters not transparent, lack efficiency
- Mailbox Filter does not support IMAP accounts
- Mailbox Filter can check multiple email accounts and categorize incoming mail.
- Mail from trusted senders or containing keywords is collected in a special mailbox, as is spam.
- Mail not falling in either category can be categorized manually in Mailbox Filter.
- Mailbox Filter can neutralize Attachments, scripts, remote images and links in HTML messages.
- Mailbox Filter uses filters looking for forged headers (senders in particular) to identify spam.
- The list of authorized senders can be populated by importing address books from many email clients.
- Mailbox Filter can issue and require private keys for authorized senders for further security.
- Can filter mail directly at the POP server or Web-based email account, deleting spam automatically.
- Mailbox Filter supports POP, MSN, Hotmail, Yahoo! Mail and AOL accounts.
- Mailbox Filter requires Windows 9x/ME/NT/2000/3/XP.
Guide Review - Mailbox Filter 3.0.5 - Spam Filter
Messages from authorized senders go to a special box, as do messages containing user-defined keywords. The rest is split in three categories: "list" for mail addressed directly to you that is not spam and has no attachments, "unknown" for "list" messages with attachments and "junk" for all the rest.
Unfortunately, Mailbox Filter's spam filters didn't do a very good job identifying spam in my tests.