Any farewell email format suggestions?

Don't send one, it's not really required. I always thought most farewell emails were BS. Just reach out to people you like and let them know personally you are leaving rather than sending one to everyone that is too politically correct with too much drama.We are already getting enough of this BS on LinkedIn. Honestly nobody gives a shit.

Thank you for the collaboration, friendship, and memories. I'll miss you all Wishing continued success and would love to stay in touch

I would simply go with expressing gratitude to mentors managers friends and colleagues and keep it simple. Irrespective of how much I would want to burn bridges that's just a shit move

Whenever you leave a workplace just point out the mismanagement which made you take a switch because management fights for their business growth you only have to fight for your growth.