Ask HN: How do I quit?

I have been working for a small but funded company (6 people) for the past 3 and a half months and have come to the decision that the role/team and me are not a good fit. I have approximately 2 and a half weeks unpaid work. We work remotely so there isn't a chance that I see my boss soon, so over email would be the best, can anyone share best practices and how I should do it. (I am totally willing to give 2 weeks notice) Thank you!