• Product: Qurb 2.0
• Direct Price: $29.95 direct
• Company Info: Qurb Inc., www.qurb.com

Don't think a whitelist product can crack your spam problem? A few minutes with Qurb 2.0 will put your doubts to rest. Qurb uses nothing but a whitelist to filter incoming messages, but it sidesteps the inconvenience typically associated with whitelisting. It's so adept at building the list that few legitimate messages wind up in quarantine, and unlike ChoiceMail, it integrates with your Outlook or Outlook Express client, so checking your quarantine folder isn't a hassle. The only drawback: It doesn't work with other mail clients.

On installation, Qurb adds three buttons and a quarantine folder to your client. Then it builds a whitelist from Outlook's contact database and calendar, as well as from any messages you've sent, received, opened, or saved. Even if you rarely update your contacts, this list is remarkably accurate.

Of course, you have to check your quarantine folder regularly, but Qurb makes it easy. Simply move to the folder with one click and move back to your in-box with another. If any important mail is quarantined—or if any spam winds up in your in-box—you can instantly edit your whitelist using Qurb's Approve and Block buttons on the mail client's toolbar. You can also instruct the software to send challenge messages, asking it to add respondents to your whitelist automatically, but this feature is turned off by default.