Me. Stat. tit. 36 § 1073
After the real estate is so advertised, and at least 10 days before the day of sale, the tax collector shall notify the owner, if resident, or the occupant thereof, if any, of the time and place of sale by delivering to him in person, or by registered mail with receipt demanded, or by leaving at his last and usual place of abode, a written notice signed by him stating the time and place of sale and the amount of taxes due. In case of nonresident owners of real estate, such notice shall be sent by mail to the last and usual address, if known to the tax collector, at least 10 days before the day of sale. If such tax is paid before the time of sale, the amount to be paid for such advertisement and notice shall not exceed $1, in addition to the sum paid the printer, if any.
36 M.R.S. § 1073