To edit the entire inner background of your design, click on the design background to open the inner background editor.
To change the color of your inner background, select a color from the color chooser. This will be applied to your entire inner background.
Click on Delete background to delete your entire design background for a transparent effect.
Search through the manual
A Quick Tour of Mail Designer 365
Graphics and Other Objects
Working with Links and Buttons
Optimizing your Template for Mobile
Using Retina Images with your Design
Preparing your Design for Sending
Setting Up Mail Designer 365 for Sending
Send via Mail Designer 365
Advanced Design Techniques
Exporting a Design to MailChimp
Exporting a Design to Campaign Monitor
Appendix: Keyboard Shortcuts
Tables (currently in beta)