Directory Sync (Email Signatures)

Directory sync for email signatures is the automatic pulling of employee attributes (name, title, department, phone, office location, custom fields, profile photo) from the organization's identity provider into the signature management platform. Sync runs continuously or on a schedule, typically every 1 to 6 hours. When an employee is hired, promoted, transferred, or offboarded, signatures across the entire team update without manual intervention. Without directory sync, every change requires IT to regenerate and redistribute signatures, which scales poorly past 10 employees. Two implementation paths exist: Microsoft 365 sync via the Microsoft Graph API (requires `User.Read.All` and `Directory.Read.All` permissions), and Google Workspace sync via the Google Directory API (requires Domain-Wide Delegation with `admin.directory.user.readonly` scope). Custom attributes beyond the directory schema (LinkedIn URL, Calendly link, certifications) are typically managed inside the signature platform and merged with directory data at render time.