6 Miss. Code R. § 401-1.3-V-2
Additional regular meetings of the Board of Directors of the District may be called by the President, or in his absence by the Vice President, or by a majority of the members of the Board of Directors, at any time upon notice given not less than five (5) nor more than thirty (30) days prior thereto by written notice mailed to each director at the address most recently furnished by him to the District. If mailed, notice shall be deemed to be delivered when deposited in the United States mail, properly addressed with postage thereon prepaid, and said notice shall contain a statement of the purpose or purposes for which said additional regular meeting is called. For any matter of extreme importance which will not permit a five (5) day delay, notice of an additional regular meeting may be given by telephone or by personal message or any form which will convey to the recipient the information that a meeting will be held and the purpose of such meeting; and such additional regular meeting may be held on the calendar day following the day that notice is given, for such emergency matters only.
6 Miss. Code. R. § 401-1.3-V-2