Is there an easy way to limit the Edit and Resend time other than putting constraints or read-only if-statements on all fields?
I would like to limit the time period a user can Edit and Resend to just the current day.
You could always try putting restrictions on the end field and compare it to the start field. Not sure at what point the end field is calculated though (If it's each time you press the "send" check-mark, then it should work).