SigningHub also lets you specify the personal email message that will be used to intimate the configured recipients/ placeholders upon their turn.
Navigate to the 'Message' tab while preparing the workflow.
Specify your email message (up to 1500 characters) in the 'Email message' text box.
Upon sharing the document package, the specified message will be displayed to each recipient, on their turn, when they will open the document package. To continue to the document viewer, the recipient will need to click "Ok".