Georgia tends to require more of a "tack and mail" approach on such issues...i.e., sending the notice and leaving a copy on the front door (i.e., "tacking"). We tend to be a little more casual about that sort of thing than some other states.
BTW, you do not need to give a 60 day notice to do this. Georgia requires a 60 day notice by the landlord to terminate a tenancy at will but does not require the same length of time to notify a tenant of a rent increase.
Georgia law (O.C.G.A. §44-7-7) specifies the notice the landlord must give to terminate or change the original rental agreement. A landlord who has a tenant-at-will must give a sixty (60) day notice to the tenant before seeking to terminate the agreement or change any term of the original agreement. This means the landlord must give a tenant-at-will sixty (60) days notice before imposing a rent increase or requesting that the tenant move.
V OLU M E I - C IV IL BEN CH BO O K (Rev. 7/11/08) - 16 - 2.12 Tenancy at Will A. Definition: Any rental agreement with no set date of termination is a tenancy at will [OCGA 44-7-6]. B. Tenancy at Will Arises: 1. When no provision for the termination of the le a se is included in the Contract [OCGA 44-7-6]; 2. When there is a deficiency in the lease C. Implied terms of contract: 1. Rental at current rate of payment continues until either the landlord give’ s sixty days notice to the tenant (to terminate or change rent) or the tenant give s thirty days notice to the landlord to terminate the lease. Any change in the terms of a 'tenancy at will' must be done with a 60 day notice including termination or a rent increase.