This is a container for the e-mail metadata such as the preview and title text, the language tag, etc.
Parameters
| Parameter | Parameter | Valid Blocks | Required | 
|---|
| BackgroundColor | The email background colour; defaults to nothing | Colour Block Group | No | 
| Title | Title - used when generated output is viewed in a browser | Text Block Group | No | 
| Preview | Preview text shown in email client previews | Text Block Group | No | 
| Breakpoint | Breakpoint used to switch to desktop view | Unit Value Block Group | No | 
| ISO Language Code | ISO 3166-1 alpha-2 language code, helps screen readers accurately read your message by indicating the language used in your email (eg, en-US, fr-FR, es-ES) | Text Block Group | No | 
| CssClass | unit : string; description : class name, added to the root HTML element created; default value : n/a; | Text Block Group | No | 
| Width | The email's width; defaults to 600px; | Unit Value Block Group | No | 
| Outlook, Force Desktop | If true, force Outlook to display the desktop version instead of the mobile version | Boolean Block Group | No |