12 Pa.C.S. § 5617: Effect of unsigned rental agreement.

If, within 30 days of the delivery of a written rental agreement from the owner to the occupant by hand delivery, first-class mail or email, the occupant fails to sign the rental agreement, the occupant's payment of rent or continued use of the leased space shall be deemed an acceptance of the rental agreement and the rental agreement shall be enforceable against the occupant as if the rental agreement had been signed by the occupant.