Who is this article for?

Customers who notice Mail Manager using too much data or network bandwidth to index SharePoint.

Some administrator permissions are required.

Mail Manager provides several settings to reduce the CPU and network bandwidth used by the background search index.

Using the 'Search only locations I use' setting

This is the main setting to reduce search index load and is recommended for all Mail Manager users.

To enable this setting:

1. Go to Mail Manager.
2. Select Tools.
3. Choose User Preferences.
4. Select Search.
5. Enable Search only locations I use.

You can apply this setting to all Mail Manager users via the admin preferences.

To apply this setting to all users:

1. Go to Mail Manager.
2. Select Tools.
3. Choose User Preferences.
4. Press CTL-SHIFT-E.
5. Select Admin Preferences.
6. Enable Search only locations I use.

With this setting enabled, you can still mark locations that you don't file to as 'used' in the filing prompt.

Note: There is no real downside to using this setting. Once set, indexing load will settle down after a few days.

Using the IndexOnlyWhenSearching config variable

This optional config variable reduces index load to almost nothing by running the background indexer only when users are actively searching in the Mail Manager search tool.

To apply this setting:

1. Add the config line IndexOnlyWhenSearching=1 to a single user or all users of Mail Manager.
2. Follow the instructions at point 2 for a single user or point 3 for all users in Applying additional user preferences.

Important: This setting will reduce your ability to find emails quickly in the Mail Manager search.

Adjusting the SharePoint indexing interval

You can adjust the time interval between SharePoint indexing runs using the SharePointIndexingInterval variable. The default interval is 15 minutes.

To adjust the indexing interval:

1. Add the config line SharePointIndexingInterval=01:00:00 (or your preferred interval in HH:MM:SS format).
2. Follow the instructions at point 2 for a single user or point 3 for all users in Applying additional user preferences.
3. Test the new interval.

You could start with one hour as shown above, then try two or four hours to find what works best for your environment.