Agent reporting "need admin approval"
Resolve EWS admin approval errors by granting tenant consent for the Email Signature Manager Agent.
Problem
When the agent attempts to connect via Exchange Web Services the agent may report it requires admin approval for example:

Solution
Login to the Azure Portal and navigate to Azure Active Directory -> Enterprise Applications -> Symprex Email Signature Manager Agent -> Permissions and select "Grant Admin Consent for [tenant]".
This will approve the agent for all users to use within the tenant.
Applies to
Email Signature Manager agent 3 and above.