Relevant Products: Signature Manager Exchange Edition | Signature Manager Outlook Edition | Signature Manager Office 365 Edition | Mail Disclaimers | Signature Manager
When receiving a message which includes HTML content (such as a signature) on an iPhone, it is displayed in Plain Text format.
This is an issue with iOS or your mail settings. Further information regarding possible causes can be found here.
Click the notification at the top of the message to download the full message: