大佬，你说的是对的。这也是我左右为难的原因。

但是，我查了我们州，有下面的文字，也就是说，如果tenant 拒绝签字，那么notice 第五天开始算，tenant 有十天的时间。

Notice can be sent by certified mail. The notice period begins when the tenant signs for the letter. The Arizona courts consider a tenant served 5 days after the notice is delivered when the renter does not sign for the letter. Landlords must have proof of delivery for the court when delivering a notice by certified mail.