I am really confused by some recent comments/reviews about MailTags. I've used both iterations of this program for quite a while now with NO problems of any kind and have benefitted greatly from the organizational capabilities that MailTags adds to Mail, iCal and iGTD. With this program you can set up smart mailboxes that instantly organize important emails (and, BTW, the tags also work in MailSteward) so that you can find invoices, shipping notices, updated email addresses sent to you by business associates, friends and family. You can also easily use MailTags with the other apps mentioned to turn emails into useful and organized To Do's. I never understand why people are so quick to downgrade an app (espeically one with a long history of glowing reviews like MailTags) rather than take the time to figure out what they are doing wrong or not doing right. BTW, I am an intermediate level Mac user with no ties to this or any other software or hardware company.