"THIS IS NOT A BILL. THIS IS A SOLICITATION. YOU ARE UNDER NO OBLIGATION TO PAY THE AMOUNT STATED ABOVE UNLESS YOU ACCEPT THIS OFFER."
The statutory disclaimer or the alternative notice shall be displayed in conspicuous boldface capital letters of a color prominently contrasting with the background against which they appear, including all other print on the face of the solicitation and shall be at least as large, bold, and conspicuous as any other print on the face of the solicitation but no smaller than 30-point type.
Ca. Civ. Code § 1716