Tenn. Code Ann. § 56-20-106

The secretary shall, within thirty (30) days after any assessment has been made, notify every member of the corporation, by written or printed notice, signed by the secretary, stating the amount due the corporation from the members, the time when and to whom it shall be paid, and the use to be made of the money collected. Such time shall not be less than thirty (30) days nor more than sixty (60) days from the service of the notice, which notice may be served personally or by mail. If by mail, service shall be deemed complete when deposited in the post office at the place where the principal office of the corporation is located, directed to each member at the member's place of residence or business, and postage prepaid. The expense and cost of collection of the assessment shall be regulated by the bylaws.