Mark folder as read

The Problem

It would be nice to be able to mark all messages in a folder as read with one or two clicks, rather than having to mark them all individually.

Proposed Solution

The ability to right-click a folder and select “Mark all as read”

Alternative Solutions

There’s a few workarounds, such as Ctrl+A (although this will only select the first 50, not all messages, or creating a mail rule. However, these are not really practical.

On Gmail shortcuts, one can press * + u, and then Shift+I. (Solution by jerinpetergeorge.)

Context

Thunderbird and Evolution both already offer this feature.

(Original issue had 41 upvotes.)