This one is bigger than it seems. Without a large screen, inbox view is very impractical. Tablets are definitely a no go. My 13" laptop is tough to use.

All we need is a simple hamburger menu that opens and closes.

Also the option for end users to be able to select top or left view per their preference would be nice to have along with the navigation collapse feature.

+1

Having it fixed practically makes 'Inbox Display' to be unusable, for example