I think each state has its own law. so follow it.

来源: 于 2012-12-09 22:14:03 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

In AZ, it is specifically written how to send a notice. 

Usually you have to post and also mail a certified letter, and wait a few (5) days.