Frequently asked questions
Outlook (Classic) agent release notes
See release history, fixes, and updates for the Signature 365 Outlook Classic agent.
Using Signature 365 in a hybrid configuration with on-premise Exchange mailboxes
Use the Signature 365 Classic Agent for on-premise Exchange mailboxes in hybrid environments, and allow the required Autodiscover access for authentication.
Using Sent Items update does not work when sending on behalf of another user
Why Sent Items Update cannot update messages sent on behalf of another user, and the current product limitation.
Apple Mail application replaces images with when replying
Why Apple Mail converts embedded signature images to attachments when replying or forwarding, and what that means for Signature 365 emails.
Using a group policy object to disable signatures in Microsoft Outlook
Use Group Policy to disable Outlook signatures and prevent users creating their own signatures alongside Signature 365.
How to capture a HAR log from Microsoft Edge DevTools
Capture a HAR log in Microsoft Edge DevTools to help support diagnose Signature 365 and Microsoft 365 backend issues.
Changing signatures in plain text emails is not supported
Learn why Signature 365 cannot change a signature in a plain text Outlook email and how to resolve the issue by changing the message format to HTML.
Enforcing SSO or MFA authentication requirements for access to the Signature 365 web portal
How to configure your Signature 365 tenant to enforce authentication requirements
Outlook shows "Please wait to send" when sending from New Outlook or Outlook on the Web.
Understand why Outlook may prevent sending while embedded signature images are still loading