@M_Kelly a user might have had a core seat previously and logged emails – which would allow them to still view those emails with a view only seat 
Keep in mind that seat assignment can be temporary and potentially switched on a regular basis.
@M_Kelly a user might have had a core seat previously and logged emails – which would allow them to still view those emails with a view only seat Keep in mind that seat assignment can be temporary and potentially switched on a regular basis.