PCMag rated McAfee Total Protection 2011 a 3.5 out of 5. It scored well in malware blocking tests, and it offers very good spam filtering. Besides the spam filtering, the suite also adds online backup of important files (powered by Mozy), limited parental control, and tools to protect your files. The software is normally $59.99 for 1-year protection for three PCs, but it's on sale right now for 83 percent off.

Right now, you can get McAfee Total Protection 2011 3-User for just $9.99, plus free shipping. PCMag said that compared with McAfee's antivirus, the McAfee suit adds accurate spam filtering, an encrypted file "vault," and enhancements to many of the existing features.

Read the full McAfee Total Protection 2011 review for more detail. This offer expires August 14 or sooner.