I'm not on MOM 6.2 but it should work the same way..

You might be able to try making a list of everyone with an email address (click Include/Names/Customer Attribute/E-Mail Address), then clicking File/Export Defined List. If you click the Select Fields button you can select the "No E-Mail" field which'll export if the customer has do not email enabled or not.

In this way you can create a list of all emails & then maybe sort it in Excel by the "No E-Mail" column or however you want to do it.