Relevant Products: Exclaimer Cloud - Signatures for Office 365
You are currently using custom attributes and you wish to switch and make use of the Additional Azure AD Attributes feature. Is this possible?
If you’re currently using the custom attributes feature, you can switch to make use of the Additional Azure AD Attributes feature - providing you synchronize a local Active Directory to Office 365, using the Azure AD Connect tool.
Providing that the extension attributes have been selected for synchronization using the Directory Extensions feature within Azure AD Connect, existing custom attribute fields added to signatures will continue to work once the switch has been made and a data synchronization has been run in Exclaimer Cloud.