You are here Home Frequently Asked Questions I sent my tenant notice of sale by registered mail, but she didn’t pick it up. Is the notice valid? I sent my tenant notice of sale by registered mail, but she didn’t pick it up. Is the notice valid? Print Share on Facebook Share on Linkedin Share on Twitter Share on Facebook Share on Linkedin Share on Twitter No. If the tenant did not sign the acknowledgment of receipt or authorize someone to do so, the notice is not valid (Article 670 of the Code of Civil Procedure; see also case law).