N.J. Stat. § 19:63-12
Each county clerk shall send, with each mail-in ballot, printed directions for the preparation and transmitting of the ballots as required by this act. The directions shall be printed in such manner and form as the Secretary of State shall require, together with two envelopes of such sizes that one will contain the other. The directions prepared by the Secretary of State shall inform the voter that the status of the voter's mail-in ballot may be checked using the free-access system provided in section 5 of P.L. 2004, c. 88(C.19:61-5). Except for a primary election for the general election, each county clerk shall ensure that the delivery envelope, which is the envelope that is used to mail the blank ballot, the outer envelope, and the inner envelope to each voter shall not contain any political affiliation or designation visible to the public on the envelope's exterior.
The outer envelope shall be addressed to the county board of elections of the county in which is located the home address of the person to whom the mail-in ballot is sent, as certified by the county clerk. At the discretion of the county clerk, the outer envelope may be a postage paid return envelope. On the outside and front of each outer envelope, there shall be printed or stamped the following:
To protect your vote:
IT IS AGAINST THE LAW FOR ANYONE EXCEPT YOU THE VOTER TO MAIL OR TRANSPORT THIS BALLOT UNLESS THE ENVELOPE IS SEALED AND THE FOLLOWING IS COMPLETED:
Ballot mailed or transported by
(signature of bearer)
(print name of bearer)
(address of bearer)
The reserve side of the outer envelope shall contain the following:
REMINDER
For your vote to count, you must:
The Secretary of State is authorized to make such changes to the instructions for mail-in ballot materials as the Secretary of State deems necessary or as is mandated by federal or State law.
The inner envelope shall be so designed that it can be sealed after the mail-in ballot has been placed therein and the flap thereof shall be of such length and size as to leave sufficient margin, after sealing, for the printing thereon of the certificate hereinafter described. The flap shall be so arranged that, after the inner envelope has been sealed, the certificate can be contained, with the inner envelope, in the outer envelope, and that the margin containing the certificate can be detached without unsealing the inner envelope.
On the outside of each envelope in which a mail-in ballot is sent to a mail-in voter by the clerk, there shall be printed or stamped the words "Official Mail-In Ballot." In addition, there shall be printed or stamped the following:
To protect your vote:
IT IS AGAINST THE LAW FOR ANYONE EXCEPT YOU THE VOTER TO OPEN, MARK, INSPECT OR SEAL THIS BALLOT.
However, a family member may assist you in doing so.
The reverse side of each inner envelope shall contain the following statement:
A PERSON MAY BE FINED AND IMPRISONED AND MAY ALSO LOSE THE RIGHT TO VOTE UNTIL RESTORED BY LAW if that person attempts to vote fraudulently by mail-in ballot, prevents the voting of a legal voter, certifies falsely any information, interferes with a person's secrecy of voting, tampers with ballots or election documents or helps another person to do so.
N.J.S. § 19:63-12