231 Pa. Code r. 205.1
Any legal paper not requiring the signature of, or action by, a judge prior to filing may be delivered or mailed to the prothonotary, sheriff or other appropriate officer accompanied by the filing fee, if any. Neither the party nor the party's attorney need appear personally and present such paper to the officer. The signature of an attorney on a paper constitutes a certification of authorization to file it. The endorsement of an address where papers may be served in the manner provided by Rule 440(a) shall constitute a sufficient registration of address. The notation on the paper of the attorney's current Supreme Court identification number issued by the Court Administrator of Pennsylvania shall constitute proof of the right to practice in the Commonwealth. A paper sent by mail shall not be deemed filed until received by the appropriate officer.
231 Pa. Code r. 205.1