C.R.S. § 15-12-306

The moving party must give notice as described by section 15-10-401 of his application for informal probate to any person demanding it pursuant to section 15-12-204 and to any personal representative of the decedent whose appointment has not been terminated. If a personal representative has not been appointed, then not later than thirty days after a will has been informally probated the moving party shall give information of the probate to the persons and in the manner prescribed by section 15-12-705 and shall promptly file with the court a statement that such information has been given, to whom, and at what addresses, if mailed. No other notice of informal probate is required.