It's usually better to resign in person, and then follow up with a formal resignation letter.
However, if you need to send a resignation email, write it as professionally as you would a resignation letter on paper.
What's the best way to format a reference letter? When you are writing reference letters, the quality of your letter is important because it reflects the quality of your recommendation.
To become a penpal to a soldier you first have to meet them though.
And that’s one of the reasons Uniform Dating exists - to make it easier for people in jobs that require you wear a uniform (read: demanding, service related professions) to meet each other.
When writing a resignation letter, it's important to keep it as simple, brief, and focused as possible. If you have made the decision to move on, there's no point in criticizing your employer or your job.
Your letter of resignation should include information on when you are leaving.