One of the biggest strengths of a Block-Style Editor is that it can provide creative professionals with tremendous design flexibility.
This is achieved by separating the concepts of Body (settings that apply to the entire message), Structures (rows of content in the message, which can be added, removed, copied, & moved) and Content (individual content blocks: images, text, buttons, etc., which also can be added, removed, copied, and moved).
Body - General settings for the message.
They are inherited by Structure and Content blocks. For example, the font family set in the message settings is then used everywhere in your message, except where you use a custom setting.
This is very useful to build a coherent message very quickly.
Structure - Here you can find types of rows to insert into the message
Rows are structural units that define the horizontal component of a section of the message by using columns. You can use from one to four columns.
Using more than one column allows you to put different content elements side by side.
You can add to your messages all the structural elements you need, regardless of the template you selected when you started.
Every row has its own settings, which gives you the kind of flexibility that before was only achieved with hand-coded email.
This section includes a series of tiles that represent the different kinds of content you can use in your message. More will become available in the future.
To use them, just drag one inside a column, it will auto-adjust to the column width.
Every content block has it owns settings, such as granular control on padding. The right-side panel automatically switches to a property panel for the selected content element.