"Send Later" is a valuable tool for teams that have flexible working arrangements. Just because Im sending an email now doesn't mean I expect someone to reply out of hours. By sending the email during business hours removes that sense of guilt some people feel by not responding to out of hours emails.

It would be great if we could setup a "Default" schedule where any email written in the defined "out of hours" e.g. 10:00pm->7:00am defaulted to "Send Later" to the end time (in this example 7:00am).

The behaviour would be that during normal hours emails default to send immediately and user can override to send later, but during out of hours the email defaults to send later, and the user can override to send immediately.