QMinimumAgeThresholdPeriod

Optional. This setting is equivalent to the value that you select for Never Archive Items Younger Than on the Archiving Rules tab of the Exchange Mailbox Policy dialog box.

This setting is for the filters that are associated with the mailbox, and it does not apply to other folders.

If you specify QMinimumAgeThresholdPeriod, you must also set values for the following:

UsePercentageQuota (must be set to true)
QMinimumAgeThresholdUnits.

QMinimumAgeThresholdPeriod is not valid for public folders.

Possible values:

An integer