I generally try to find something a little peppy to start off the week but this one by John Lennon has always been a favorite of mine. There are several versions and I really like the one that starts with birds chirping but I couldn't find a good youtube of that one.
Maybe the calming tone of “Across The Universe” will bring a moment of zen to help us focus on the tasks ahead. Speaking of tasks, have you every tried to find peppy mail music?