Outlook 2007: Change Quick Click Settings for Categorizing Email
Contributed by Rob Rogers 
Tagged: Microsoft Outlook By default, Outlook sets the category on emails you select (by clicking on the Categories column in your Inbox) as Red Category. If you often are categorizing your email as something other than Red, you can change the default Quick Click setting, follow these steps:
1. Right-click any Category Icon in your Inbox and select Set Quick Click (or you can click the Categorize icon on your standard toolbar and select Set Quick Click).
2. From the drop-down, select the desired Category setting.
3. Click OK.
Now when you click the Category Icon on an email, it will use your new setting as the default.
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Jonny Is Tired said on November 20, 2008
I want to categorize a message with one click while i’m reading it. Not after I’ve read it and viewing it in the full list. That’s a waste of time to have to re-read the message subject (or sender, etc.).
Ina said on September 8, 2009
I’ve tried this but everyday it changes back to Red. Is there a way to make it default to another color forever, not just for 1 day?
Tom King said on February 2, 2010
I have the same problem. I’m loggign on to my email account over an office network is it something to do with this?
Anonymous said on February 19, 2010
same here. any resolution?
Tom King said on February 19, 2010
Still no joy. Please let me know if anyone finds out why.
Anonymous said on April 26, 2010
There was a hotfix for this problem:
http://support.microsoft.com/kb/974994