While we sync activities from the Redmine we use entities: issue id, project id, child id, issue category, issue statuses, start/end dates, issue priority to compare and to keep issues data updated.
We process these entities on our server.
Your confidential business data is not processed in our server and not analyze the content of the data is not analyzed or forward it forwarded to external parties.
This data is only storage stored in outlook the Outlook data file (.ost), this . This is a security format that cannot be open opened on other another machine or user account.