Unscheduling a campaign

[thebootable]

Is your feature request related to a problem? Please describe.
After I have scheduled a campaign, there is no way to unschedule it.

Describe the solution you'd like
I think we should be able to revert a campaign back to a draft.
The button for that could be next to the "save changes" button, basically replacing the "schedule campaign" button.

[knadh]

Have you tried toggling the "Send later" switch next to the scheduled date?

[thebootable]

Huh, okay I didn't know that would work.
No, I was scared toggling that button back would lead to the email being sent instantly so I didn't press it.
Maybe a button with the label "unschedule" that just switches that option off would be an easy implementation to make it more intuitive?