After briefing but before oral argument in this appeal, the Supreme Judicial Court decided Phillips v. Equity Residential Mgmt., L.L.C., 478 Mass. 251 (2017). As the parties agree, Phillips controls the issues before us. Specifically, under Phillips, the defect in the landlord's letter resulted in forfeiture of her rights to retain the security deposit and to bring counterclaims, see ibr.US_Case_Law.Schema.Case_Body:v1">id. at 256, 258 n.16, but did not give rise to liability for treble damages and attorney's fees, see id. at 258, 261.