Code of Alabama
Article 1 - General Provisions.
Section 13A-12-3.5 - Shipping Requirements.

Each person, other than a delivery service, who mails, ships, or otherwise causes to be delivered a shipping package in connection with a delivery sale shall do all of the following:
(1) Include as part of the shipping documents a clear and conspicuous statement stating: "Cigarettes: Alabama Law Prohibits Shipping to Individuals Under 19 Years of Age and Requires the Payment of All Applicable Taxes."
(2) Use a method of mailing, shipping, or delivery that requires the consumer's signature before the shipping package is released to the consumer.
(3) Ensure that the shipping package is not delivered to any post office box.