Outlook Add-In: Custom Column

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Outlook Add-In: Custom Column
Outlook Add-In: Custom Column in Explorer 
Leon H H




Posts: 19
Joined: 2010-04-06
I was able to add a custom column to Outlook Explorer and have few questions:

1. I do not see that the code I added that I picked on this site has specifics with regards to user account. Does it mean that adding a User-Defined Column to Outlook Explorer is application wide feature? If not, what do I need to do to make this column available to all user accounts, including Exchange accounts?

2. Is it possible to paint the above User-Defined column header in a different color?

3. How can I enable editing of the values in this column programmatically? I did not discover any API so far. Is it possible by setting some Registry value. Will it be application wide setting or per user/account?
Posted 09 Sep, 2022 16:44:34 Top
Andrei Smolin


Add-in Express team


Posts: 18421
Joined: 2006-05-11
Hello Leon,

1. I assume you've updated a view or created a custom one to achieve this. As far as I know, views are per-user and you need to update a view(s) or create a custom view on other users for them to see the change.

2. I don't see such a feature in the Outlook UI. If it is missing, you can't do this.

3. Check TableView.AllowInCellEditing property (Outlook)

Regards from Poland (CEST),

Andrei Smolin
Add-in Express Team Leader
Posted 12 Sep, 2022 04:35:28 Top
Leon H H




Posts: 19
Joined: 2010-04-06
With regards to #1:

What I meant was: I need to be able for accounts name@yahoo.com and name@gmail.comwhich show up in outlook (accounts that I am reading my email from). Obviously when I different user logs in the Custom Column will be set for him too, automatically...

With regards to #3: EXCELLENT! THANK YOU! (I don't know how I missed it...)
Posted 12 Sep, 2022 12:50:50 Top
Andrei Smolin


Add-in Express team


Posts: 18421
Joined: 2006-05-11
Hello Leon,

If you mean accounts within an Outlook profile, then the column is located on the folder level and you see it whatever account you use to send/receive an email.

If the accounts are in different profiles, you need to create that column in both profiles.

Regards from Poland (CEST),

Andrei Smolin
Add-in Express Team Leader
Posted 13 Sep, 2022 06:42:43 Top
Leon H H




Posts: 19
Joined: 2010-04-06
Obviously, if another user logs in with different Profile or current user switches Profile then it will automatically do the custom column in xxx_StartupCompleted event handler.

So, expanding one of my previous questions:
Is it possible to change cell or row font and font color in code, and if yes, how? I went through TableView properties but did not see anything that I could set...
Posted 13 Sep, 2022 16:29:25 Top