Maximum Email Age is not enforced on a Windows Phone 7.5 device
Posted by Donna Magada on 18 November 2011 12:07 PM

(WP 7.5)  When Maximum Email Age is changed from Sync All to 1 day or 3 days, devices operating on Windows Phone 7.5 still synchronize all email and email older than the Maximum Email Age is not removed form the device.  B6570

This has been observed on the LG Quantum runnning Windows Phone 7.5.