Relevant Product: Exclaimer Cloud - Signatures for Office 365
You have deployed Exclaimer Cloud Signature Update Agent, and you notice that the signatures do not appear within Apple Mail; however, the signatures download fine in Microsoft Outlook.
Unfortunately, there isn't a proper resolution to this issue. But, as a recommended workaround, we suggest you disable the System Preferences option within iCloud Drive to display the client-side signature in Mac Mail.
To do this:
- In macOS, navigate to System Preferences > Internet Options > iCloud Drive.
- Click Options.
The list of Apps that store data in iCloud Drive is displayed.
- Disable the System Preferences.app.
- Click Done to close the window.