S.C. Code Ann. § 12-49-1120

When real property is levied upon for taxes by the tax collector, the tax collector shall give at least forty-five days' written notice prior to the sale of the real property to a mortgagee contained on the mortgagee list filed with the tax collector as provided in Section 12-49-1150. The period of forty-five days shall begin to run from the time the notice is personally delivered or from the date of its mailing when delivered by certified mail as provided in this article. The notice must contain a description of the real property levied upon, including the tax map number assigned by the county, the name of the owner, the year or years for which the taxes were assessed, and a statement of the amount of the taxes with the accrued costs. The notice must be delivered to the mortgagees either personally or by certified mail with return receipt requested at the address(es) shown on the most current mortgagee list for a particular mortgagee. If delivered personally, the tax collector shall obtain a signed receipt from the mortgagee. Although a separate notice must be prepared for each parcel of real property to be sold, a tax collector may enclose in the same package or envelope multiple notices to be given to the same mortgagee at the same address.