Whether you are stuck with using Microsoft Outlook or like using it, you can’t deny the fact that it is can get very slow and unresponsive at times.
This is especially true if you have a lot of items in the inbox or if you have e-mails with huge attachments (in terms of file size).
Instead of presenting you with a 2000 word thesis on MS Outlook, here I present you with 2 quick ways you can use to dramatically speed up Outlook 2003 and Outlook 2007:
1. Disable all the add-ins.
On the menu bar, click on Tools -> Trust Center.
Click on the Add-Ins tab.
Near the bottom, click Go.
Disable all Add-ins unless you feel you need them.
I disabled all of them. It is safe to disable them – you will still be able to send/receive mails without any problems.
2. Compact your .pst file(s)
Outlook uses .pst files to store your mail. If the amount of emails you have is huge, performance can get sluggish due to the huge size of these files.
You can compact them and radically improve performance. Here’s how:
On the menu bar, click on File -> Data File Management.
Click on the Data Files tab.
Now in the “Name” column, select the first item. Click on “settings”.
Click on “compact now” button and you’re done.
Repeat this for all items in the Data Files list.
So you saw 2 simple tricks that will help you drastically improve the performance of Microsoft Outlook 2007.
Say goodbye to the laggy and unresponsive user interface. 
