3703. Marking or notice on election mail (a) In general For the purposes of assisting election officials in processing election mail, the Postal Service shall place a marking or notice indicating that a piece of mail is election mail. (b) Requirements The Postal Service may determine the appropriate manner in which subsection (a) is carried out, but at a minimum such marking or notice shall— (1) be placed, as soon as practicable, at the time the election mail is received by the Postal Service, in a conspicuous and legible type or in a common machine-readable technology on the envelope or other cover in which the election mail is mailed