For more information on Blackbaud Europe's MailWise Service please see What is MailWise
Please see UK MailWise Help File - Data Audit for the step to setup a query and export the data from eTapestry and how to then send the data to Blackbaud.
This Help File discusses sending data for individual constituents who are UK residents. If you wish to send data for organisations or for overseas constituents then please contact your Account Manager on 0845 658 8590 if in the UK or +44 (0)207 921 9607 if outside the UK. Alternatively email firstname.lastname@example.org