I once was let go from a job because of something related to email. It's almost comical, although I didn't feel that way when it actually happened.

I was basically working independently on a teaching task. But there was one coworker who had been there for a long time and was working more in outreach. She told me to install four(!) different instant messaging apps -- which I didn't do because while her job involved a lot of communicating with third parties, mine didn't. Besides, she was not my boss (formally - although I think she thought she kinda was. In any event, she did have a lot of influence on my actual supervisor.)

She insisted that that's mandatory for me to which I countered that the whole professional world works on email just fine, as far as non-internal communication is concerned. She started screaming at me in my own office how I had betrayed her by agreeing to install the apps but then didn't do it. I didn't think I agreed because I found the idea ridiculous from the get go. Anyway - I stayed calm and said we should talk again when she was calmer, too.

I later found out that she then schemed behind my back to have me laid off. Which obviously worked.

I must have really rubbed her the wrong way. But in retrospect, I'm really happy to have moved on to better places since.