Comparing annual email activity across units

For the established (legacy) Volunteer Management portal. These steps differ from the newer Volunteer Management interface. Administrator controls require the appropriate school or volunteer-management permissions.

Export Email Deliverability for the same fiscal-year range in each VMS unit and retain a unit column when combining files. Count email rows for send volume. Calculate distinct volunteer identities separately; adding each unit's unique count can double-count people serving in multiple units. Historical email rows can remain after deactivation while volunteer identity columns show N/A because that export's identity lookup uses active registered volunteers. Reconcile those rows before claiming a unique-person count. Volunteer Actions reports active volunteers and is not a complete historical email-volume report.