Also, make sure
you double space between paragraphs because it makes your email less boring and easier to read.
Your letter should be in block format: the entire letter should be aligned to the left and single - spaced except for
a double space between paragraphs.
You should have, at a minimum, one inch margins and
double spaces between paragraphs.
Single space within paragraphs,
double space between paragraphs.
As usual, such letters are not more than 3 paragraphs, written in single space and
double space between paragraphs.