Any person may request that a copy of the agenda, or a copy of all the documents that constitute the agenda packet, of any meeting of a legislative body be mailed to that person. Upon receipt of the written request, the legislative body or its designee shall cause the requested materials to be mailed at the time the agenda is posted pursuant to Section 89305.5 or upon distribution to all, or a majority of all, of the members of a legislative body, whichever occurs first. Any request for mailed copies of agendas or agenda packets shall be valid for the calendar year in which it is filed, and shall be renewed following January 1 of each year. The legislative body may establish a fee for mailing the agenda or agenda packet, and that fee shall not exceed the cost of providing the service. Failure of the requesting person to receive the agenda or agenda packet pursuant to this section shall not constitute grounds for invalidation of the actions of the legislative body taken at the meeting for which the agenda or agenda packet was not received.