Under "Deliver and Mail" section of the CPLR, the summons and complaint must be:
1) mailed by regular mail within ten days of delivery or mailing, whichever is later
2) mailed by certified mail within twenty days of delivery or mailing, whichever is later
3) served upon a resident of the defendant's actual residence
4) mailed before the summons is delivered to the defendant
5) none of the above