If you use Microsoft Dynamics 365, when you use server-side sync, Dynamics 365 contacts and activities (including emails, appointments, contacts, and tasks) are synchronized to your specified email system (such as Exchange).
An administrator can configure server-side sync functionality to specify which users have the ability to send emails or appointments from Dynamics 365 or synchronize activities and contacts between Dynamics 365 and the user’s mailbox. Both the administrator and end users can further customize filter criteria, and administrators can even define which entity fields synchronize.
If you use Microsoft Dynamics 365 (online), when you use the Sync to Outlook feature, the Dynamics 365 data you are syncing is “exported” to Outlook. A link is maintained between the information in Outlook and the information in Dynamics 365 (online) to ensure that the information remains current between the two. Outlook Sync downloads only the relevant Dynamics 365 record IDs to use when a user attempts to track and set regarding an Outlook item. The company data is not stored on the device.
An administrator determines whether your organization’s users are permitted to sync Dynamics 365 data to Outlook by using security roles.
To use Microsoft Dynamics 365 for Outlook, you are required to sign in by using your credentials (an email address and password). You may choose to save this information locally so that you are not prompted for your credentials each time you open Outlook. If you do choose to save this information locally, Dynamics 365 for Outlook will automatically connect to Microsoft Dynamics 365 (online) every time you open Outlook.
After the first time you sign in and use Dynamics 365 for Outlook, the connection between your computer and Dynamics 365 (online) will always be open when you have access to the Internet. You may choose to turn off the connection between your computer and Dynamics 365 only by using a configuration setting, but if you do turn off the connection, Dynamics 365 for Outlook may exhibit decreased performance.
If you use Dynamics 365 for Outlook to track email, the email thread will be visible to users in your organization who have permission to view it.
For every email you receive, Dynamics 365 for Outlook will send Dynamics 365 (online) the sender’s email address, the recipient’s email address, and the subject line of the message. This allows Dynamics 365 (online) to validate whether or not a particular mail should be stored by the Dynamics 365 (online) service. When you track an item, a copy of that item will be maintained by the Dynamics 365 service and will be visible to other users in your organization who have the appropriate permissions. When you untrack an item, that copy is automatically deleted from Dynamics 365 (online) only if you own the item.