Memos usually have one or two blank spaces between the bottom of a paragraph… 1 answer below »
Memos usually have one or two blank spaces between the bottom of a paragraph and the top of the heading below it. If there are two blank spaces above (triple spaced), there should be one below. If only one blank space appears above the heading (double spaced), then there should be no blanks below. The effect is that the heading “hangs with” the text it describes.
The tone of a memo is usually formal, although some use of “you” is acceptable. Generally, writers are advised to avoid addressing the reader directly, unless the content requires such address.

