General
What is SyncSE?
SyncSE is an enterprise service that synchronizes your Microsoft 365 Global Address List (GAL) to personal contacts in user mailboxes. It runs as a Windows Service on your infrastructure and connects to your M365 tenant via the Graph API.
What does 'SE' stand for?
SE stands for 'Subscription Edition', reflecting our simple per-user monthly licensing model.
Why would I need GAL synchronization to personal contacts?
The Global Address List is only available within Outlook and Exchange-connected apps. Personal contacts, however, are available across all devices and applications — including mobile phones, Teams, and third-party apps.
By syncing GAL to personal contacts, your users can see their colleagues' contact information everywhere, not just in Outlook.
What exactly gets synchronized?
SyncSE synchronizes users and contacts from your GAL (or a filtered subset) to personal contact entries in target mailboxes. It handles the full lifecycle: adding new contacts, updating changed information, and removing contacts that are no longer in the source.
Can I sync contacts between different M365 tenants?
Yes. SyncSE supports cross-tenant synchronization, creating organization contacts in the target tenant from users in the source tenant. This is useful for mergers, partnerships, or multi-tenant organizations.
Deployment & Security
Where does SyncSE run?
SyncSE runs as a Windows Service on your on-premises server. All contact data processing happens within your environment. A cloud-hosted option is planned for a future release.
Does my contact data leave my network?
No. All synchronization processing is local. The only outbound communication is to the SyncSE update server for application updates and anonymous usage reporting. No contact data is ever transmitted.
What Microsoft 365 permissions are required?
SyncSE uses Microsoft Graph API with application permissions to read directory data and write personal contacts. You register your own Azure AD application with the minimum required permissions.
How does dynamic group targeting work?
You can specify a Dynamic Distribution Group or Dynamic M365 Group as both the source (which GAL entries to sync) and the target (which mailboxes receive contacts). This lets you automate who gets what contacts based on your existing group membership rules.
Pricing & Licensing
How is SyncSE priced?
SyncSE is priced at €1 per user per month, where a 'user' is a target mailbox receiving synchronized contacts. If you sync to 500 mailboxes, that’s €500/month.
Is there a free trial?
Yes. You can evaluate SyncSE in your environment with a trial period before committing to a subscription.
Do you offer volume discounts?
Yes. Contact our sales team for custom pricing on deployments with more than 5,000 target mailboxes.