Can you convert the following angry email to my manager into a professional and civil resignation letter as described above? 

"Dear [Manager Name]

I quit. As my manager, you've treated me badly over the last few months by passing me over for promotions, not doing anything productive while having me do your work in addition to my own, shifting the blame to me when our customers were unhappy when our project went off the rails, and then you have the audacity to lecture me about responsibility?

Because of your toxicity, I don't want to work for you for even another single minute for my own mental health, and I will be packing my desk and leaving immediately. 

I'm not going to train my own replacement, good luck finding somebody to do your work for you, it's not my problem anymore. 

Suck it,

[My Name]"
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