After clicking on the Send Registered button, the RMail Feature & Sending Options Panel will appear enabling the different RMail features and options available for sending a Registered Email. 

The following list shows all the sending features available for you to use with the RMail App for Outlook Desktop. Click on any of the features for a more detailed article in the RMail help center.

• Track & Prove
• Encrypt
• E-Sign - Send for signature
• FileShare (Large File Transfer)
• SideNote®
• Disappearing Ink 
• Attachments 
• Register Reply
• Client Code
• Sender Signature and Authentication

For a general overview of these RMail features please refer to article RMail  - Features at a glance