Section 84305 Of Article 3. Prohibitions From California Government Code >> Title 9. >> Chapter 4. >> Article 3.

. (a) Except as provided in subdivision (b), no candidate or committee shall send a mass mailing unless the name, street address, and city of the candidate or committee are shown on the outside of each piece of mail in the mass mailing and on at least one of the inserts included within each piece of mail of the mailing in no less than 6-point type which shall be in a color or print which contrasts with the background so as to be easily legible. A post office box may be stated in lieu of a street address if the organization's address is a matter of public record with the Secretary of State.
  (b) If the sender of the mass mailing is a single candidate or committee, the name, street address, and city of the candidate or committee need only be shown on the outside of each piece of mail.
  (c) If the sender of a mass mailing is a controlled committee, the name of the person controlling the committee shall be included in addition to the information required by subdivision (a).