Date of mailing, date of filing
Section 3, Rule 13 of the Rules of Court provides that if a pleading is filed
by registered mail, then the date of mailing shall be considered as the date
of filing. It does not matter when the court actually receives the mailed
pleading. (Russel v. Ebasan, G.R. No. 184542, April 23, 2010)
The filing of pleadings, appearances, motions, notices, orders, judgments and all other papers shall be made by presenting the original copies thereof, plainly indicated as such, personally to the clerk of court or by sending them by registered mail. In the first case, the clerk of court shall endorse on the pleading the date and hour of filing. In the second case, the date of the mailing of motions, pleadings, or any other papers or payments or deposits, as shown by the post office stamp on the envelope or the registry receipt, shall be considered as the date of their filing, payment, or deposit in court. The envelope shall be attached to the record of the case. (Section 3 of Rule 13)