Mo. Rev. Stat. § 474.554

Without further notice, at any time during the administration of the estate or, if there is no grant of administration, upon such notice and in such manner as the court directs, the court may issue an order pursuant to sections 472.400 to 472.490 for a custodian of an account held under a terms-of-service agreement to disclose digital assets for the purposes of obtaining an electronic will from the account of a deceased user. If there is no grant of administration at the time the court issues the order, the court's order shall grant disclosure to the petitioner who is deemed a personal representative for sections 472.400 to 472.490.