I would like to see a feature added to the message composer that would allow the width of the Details/Design tab to be adjusted by the browser.

Could you please add the feature to change (narrow and widen) the width of the "Details / Design tab" for comfortable editing?
For example, a feature that adjusts on the browser side. Please see image file.

The size of the left menu is fixed even if the window size is reduced.

I think it would be easier to work if you could make the menu smaller (narrower) or hide it.

The UI is completely different, but Content builder has the features to change the screen layout depending on what the user wanted to do.
e.g.)
- Switching the display of only the edit screen to "split / preview".
- Displaying the edit area of the text widely.

detail-design.png

Attachments Open full size