Ala. Code § 45-3-84.68
The judge of probate may mail to any person to whom a motor vehicle license has been previously issued an application for renewal of a license required to be returned prior to the expiration date of the license. The application for renewal may be in the form of a postcard and shall contain sufficient information to adequately identify and process the renewal. The signature of the licensee on the application and proper remittance shall constitute sufficient authority for the judge of probate to issue the license and return the license to the licensee by mail. The county commission may establish a fee to be entitled "Mail Order Fee" in an amount not to exceed three dollars ($3) to pay the cost of this mailing procedure. The fee shall be collected by the judge of probate at the time of issuance and paid over to the general fund of the county as are other fees and commissions.
Ala. Code § 45-3-84.68 (1975)