When I updated my MacBook Pro to OS X 10.8, a few of the extensions that I had installed to improve Apple's Mail application were disabled. I've not taken the time to find updates for them - being honest, I was working out if I could get away with not purchasing them. Over the three months I've been on OS X 10.8, I haven't been clearing down my inbox, leaving the existing mail rules to shift the messages with identified keywords or senders to the appropriate folders. This meant that the actual inbox has become filled with messages…over 6000 of them!
In my defence, I have some smart folders set up [unread messages, today's emails, yesterday's emails and flagged messages] and primarily interact with my mail using them. I rarely look in the actual inbox.
I decided this evening to spend some time cleaning the inbox and create additional rules to move important messages into set folders and then move the remainder of the messages to junk or spam folders. I quickly realised that it was going to take a long time without some of the extensions I have used. I went hunting and found the latest version of Mail Act-on…I purchased it and the associated extensions (Mailtags and Mail Perspectives). I cannot stress enough how good these apps are for speeding up interaction with Apple's Mail application!
If you have an Apple computer, use Mail as your primary email application…then I would suggest you buy a copy of these applications and take some time to learn how to use them…you won't regret it! Highly recommended.