Deployment and configuration
Enable legacy Exchange Online tokens
Temporarily re-enable legacy Exchange Online tokens while upgrading the Signature 365 add-in or granting required permissions.
How Outlook client-side signatures work
Learn how Signature 365 client-side signatures are enabled and inserted in Outlook when the add-in is installed.
How to enable debug log in Outlook add-in
Enable or disable Outlook add-in debug logging in Windows by creating the required Office registry keys.
How to install the Outlook (Classic) agent
Install the Signature 365 Classic Agent for Outlook 2016 to 2024 using MSI or ClickOnce, including system requirements and limitations.
How to install the Outlook add-in
Deploy the Signature 365 Outlook add-in from Microsoft 365 or supported Outlook clients so users can preview and insert signatures.
How to set Outlook default fonts for all users
Use the Symprex Email Signature Utility to set default Outlook messaging fonts for all users with Signature 365.
Managing Outlook's default signature options with the Signature 365 Outlook add-in
Configure how the Signature 365 Outlook add-in inserts default signatures and handles Outlook's built-in signature settings.
Managing personal signatures, fonts and stationary for Classic Outlook desktop
Use the Symprex Email Signature Utility to manage Classic Outlook fonts, stationery, and personal signatures on local devices.
Managing personal signatures, fonts and stationery for "New" Outlook and Outlook Web Access
Use Exchange Online PowerShell to manage New Outlook and OWA fonts, stationery, and user-created signatures with Signature 365.
Updating the Signature 365 Outlook add-in
Manually update the Signature 365 Outlook add-in when a major release requires redeployment through Microsoft 365 or manifest-based installs.
Version requirements for the Outlook mobile Add-in
Check the Outlook Mobile and Signature 365 add-in versions required to use client-side signatures on iOS and Android.