Service information
What is the difference between client-side and server-side signatures?
Compare how client-side and server-side signatures are inserted, managed, and delivered in Signature 365.
Do my emails remain private when using Signature 365?
Learn how Signature 365 injects signatures without storing or reading your email content.
Do you store my Microsoft 365 Global Administrator credentials?
See how Signature 365 uses OAuth access tokens instead of storing Microsoft 365 global administrator credentials.
Is Signature 365 GDPR and CCPA compliant?
Review Signature 365 GDPR and CCPA compliance, including the DPA and privacy policy.
Does Signature 365 support DomainKeys Identified Mail (DKIM)?
Understand how Microsoft 365 reapplies DKIM after Signature 365 processes signed email.
Does Signature 365 support Entra ID Dynamic Groups?
Use Entra ID dynamic groups in Signature 365 rules for attribute-based membership targeting.
What Entra ID data is synced with Signature 365?
See which Entra ID fields Signature 365 syncs for users, groups, and mailbox data.
Signature 365 Entra ID enterprise applications
Identify which Signature 365 enterprise applications are created in Entra ID and what each one does.
Signature 365 Exchange mailbox support
Check Signature 365 add-in and agent support across Exchange Online, on-premises, and Outlook platforms.
Signature 365 ports and URLs
Allow the required Signature 365 URLs, regional hosts, and HTTPS connectivity for portal, add-in, and agent services.
Signature 365 Outlook add-in manifest versions
Review Outlook add-in manifest release notes, including version changes and authentication updates.
Removing Email Signature Manager following migration to Signature 365
Remove legacy Email Signature Manager services, apps, agents, and servers after moving to Signature 365.
Migrating to Signature 365 from Email Signature Manager
Plan and complete a move from Email Signature Manager to Signature 365, including prerequisites, migration, and rollout steps.
Do my emails remain private when using Signature 365?
Learn how Signature 365 injects signatures without storing or reading your email content.