One of the things I do each morning is check Twitter for questions about Outlook. This morning I found this one from Meester Neek.
Someone else had already replied to the tweet suggesting that Meester Neek create a rule to handle this. Unfortunately, Outlook’s only rule condition for attachments is which has an attachment. There is no option for specifying an attachment name or type. We can still use a rule and that rule can use the which has an attachment condition, but the rule is going to have to run a script in order to determine if any of the attachments are zip files and act accordingly. The script itself is extremely simple. All it has to do is check the file name of each attachment to see if it ends with .zip. If it does, then the script will move the message to the Junk E-mail folder. Otherwise, the script does nothing. This solution should work for any version of Outlook on a PC. Note that it will not work for Outlook on a Mac, OWA, or mobile devices.