
Reference:
Approve Email for All Relevant Users:
After updating the mailbox configurations, it's necessary to approve email for all relevant users. This step confirms that the email addresses are verified and allowed to send and receive emails through Dynamics 365.
This approval step is required to ensure that Dynamics 365 has permissions to access and synchronize with each user's mailbox in Exchange Online.
Test the Email Configuration and Enable the Selected Email Mailboxes for All Relevant Users:
Finally, testing the email configuration ensures that server-side synchronization is functioning correctly with Exchange Online. Once the test is successful, enabling the email mailboxes activates the synchronization for all users.
This step verifies that the settings are correct and that emails can be processed as expected, finalizing the setup.
By updating the mailbox settings to Exchange Online, approving email access, and testing and enabling the configuration, you ensure a smooth transition from Gmail to Exchange Online for server-side synchronization, enabling efficient email communication through Dynamics 365.