I'd like to be able to resize the individual columns in Inbox to better fit my needs. For example, I'd like to widen the Details/Ask Magic column on the right of Inbox to make it bigger, but I can see uses for adjusting each column in the application.

For example if "My Inbox" could be made wider I could read more of the Subject line of a ticket without it being truncated into ellipsis. In the "Details column", most longer email addresses are truncated, along with statuses, issue type/sub-issue type.

As a user with channel names greater than 24 characters in length, I want to be able to expand the width of Inbox lefthand navigation to show the full name of all subscribed channels.

I prefer this behavior to the current, fixed-width design that truncates the channel name via an ellipsis (as highlighted in this screenshot).