In my plugin i use ExtendedProperty for save some metadata on it. I set values of ExtendedProperties using EWS. I receive requirement
for not use EWS anymore and it's allowed to connect to Outlook only. SO i see that i can use UserPropery of MailItem. So i have to migrate old data by some way. Firs that come to my mind is query all items that have specific Extended Property using EWS and
copy values to MailItem.UserProperty. Does anyone know how to query it from EWS or maybe you have another ideas how to migrate this data?
masta-smooky