Sure, you can post your own notice, but if you go to court you risk the "he said, she said" thing in front of the judge. Risking having to start all over again if the Judge determines improper service.
Don't risk it. Have a professional, impartial party serve the notice. It'll be harder to get it thrown out of court.
We will serve or post and mail these on a Same Day or Rush basis for a flat fee.
After the three day notice to pay rent or vacate. It's now time to serve the Summons and Complaint for Unlawful Detainer.
We serve these on a priority basis. Usually 3-5 days.
Sometimes even the pros are unable to serve someone as quickly as we would like. We do our best and if it's still unserved, provide you with an affidavit to take to court so the Judge will issue an Order providing fop alternative service.