If a third-party provider hosts your Exchange, you may need their help to enable Impersonation for your service account. Impersonation is less common than delegate access, but a better fit to give permissions to applications such as Robin.
Most providers that Robin has worked with let you manage Delegate access yourself, but ask you to file a support ticket to activate Impersonation. Use the email template below as a guide. You can CC support@robinpowered.com, and the Robin support team helps with technical questions.
Hello,
We're on your [Hosted Exchange product here] and I'd like to get our [Service account email here] service account to have Impersonation rights for resource mailboxes. A few of the apps we use require Impersonation rights in order to manage resources, and they won't work with Delegate access.
Ideally this policy would be based on mailbox type. Here's a rough management scope for reference:
New-ManagementScope -Name "ResourceMailboxes" -RecipientRestrictionFilter {RecipientTypeDetails -eq "RoomMailbox" -or RecipientTypeDetails -eq "EquipmentMailbox"}"Happy to provide additional info if needed. Can you help us enable Impersonation for this account please?