Many memorandum writers feel that as their names are on the "From line, a signature, either typewritten or handwritten, is unnecessary But. whether you initial or sign your memorandum is up to you. f you want your memorandum to be personal, either initial or sign it. The best place for a signature is at the bottom of the memo. although some persons like to sign or initial above or to the right of their written names on the "From" line.