Certified mail, postage prepaid, return receipt requested.
Simultaneously, a duplicate notice may be sent by regular mail, postage prepaid.
If a notice that is sent by certified mail is returned unsigned, service shall
be deemed effective pursuant to service of the duplicate notice by regular
mail, provided that the duplicate notice sent by regular mail is not returned
as undeliverable. Notice shall be mailed to the last address shown on the
County Tax Assessor's records if the notice concerns real property, and to
the last known address of any other party to the proceeding shown in official
records of the Town of New Windsor;