Miss. Code § 23-15-691
As soon as possible after the printing of the official absentee ballot for any election, the registrar of the county shall send to any absent voter as defined in this subarticle, who shall, upon proper application, have requested same, the official absentee voter ballot or ballots provided for in this subarticle and the instructions for voting and returning the ballot. If the ballot is sent by mail the registrar shall send a self-addressed envelope or envelopes with the ballot and the instructions.
If the ballot is sent by mail, the gummed flap of the envelope provided for the return of the ballot must be separated by wax paper or other appropriate protective insert from the remaining balloting material. The voting instructions shall require a notation of the facts on the back of the envelope duly signed by the voter.
If applicable, the instructions shall indicate that the ballot shall be marked in ink or indelible pencil.
Miss. Code § 23-15-691