Additional Mobile Rules
For some devices which contain a hyperlink within the signature you will need to create a new rule which contains the HTML Code.
Two examples of this are the Outlook app on both iOS and Android devices.
Outlook for IOS contains a default signature of: Get Outlook for iOS
To fix this you should create a new rule with the following:
Text to Replace: 'Get <a href="https://aka.ms/o0ukef">Outlook for iOS</a>'
Rule contains HTML Code: Checked
Rule is case sensitive: unchecked
Outlook for android contains a default signature of: Get Outlook for android
Text to Replace: 'Get <a href="https://aka.ms/ghei36">Outlook for Android</a>'
Rule contains HTML Code: Checked
Rule is case sensitive: unchecked
Note: If you do not see the "Rule contains HTML Code" option you need to upgrade Email Signature Manager 8.3.0 or above.
Supported versions of Email Signature Manager
Check supported Email Signature Manager and Agent versions for Exchange Server Subscription Edition and limited Microsoft 365 use.
Agent Command Line Switches
Reference executable agent command-line switches for service URLs, database connections, update-and-exit, and tray icon behavior.