Re Telepressure: If a quick response is wanted...
...then they should phone me. Equally, if I want a quick response, I'll phone. I mean, that's what a phone (smart or otherwise) is for, isn't it?
* Of course, in this day and age much communication seems to be about dishing out hassle to other people just to deliberately irritate them so that the 'disher' can feel smug about being 'in authority'. Actually communicating for the purposes of getting a job done seems to have become somewhat rare.