If you are like me and you have been using Apple OSX for a while you might notice that the Mail application has the tendency to slow down after a while. Since Mavericks OSX Mail it also consumes a huge amount of memory.
After searching on the Apple support forum I finally found a solution that solved most of my memory usage and performance issues with Mail.
Let me start by explaining what is causing my issues. This way I’m not waisting your time with a solution that is not solving anything for you.
The main cause for my issues is that I’ve had several accounts configured in the recent years. Although I was still only using one configured mail account, older mail accounts and content is still saved on disk and scanned while opening the application. As OSX uses memory to improve performance a lot of this content was also stuck in memory.
Luckily there is a very easy way to check if this issues applies to you as well.
OSX Mavericks Mail
Open up Finder and go to the root folder for your user account.
While the user folder is selected go to View and select Show View Options
Select Show Library Folder
Now open the path User Folder –> Library –> Mail –> V2
In the screenshot above the content of my V2 folder is shown, as it is right now after cleaning up older mail accounts. I had 4 mail account folders still there which I removed.
Just remove the folders for the accounts you are no longer using and restart OSX Mail. You should immediately notice that it starts a lot faster and memory consumption is much lower.
Please leave a comment if this article works for you or you have a different approach!