Colorado Registered Agent Statutes
§ 7-90-704. Colorado Registered Agent Service on entities
Service on entities
(1) The registered agent of an entity is an agent of the entity authorized to receive service of any process, notice, or demand required or permitted by law to be served on the entity. The registered agent of an entity is an agent of the entity to whom the secretary of state may deliver any form, notice, or other document with respect to the entity under this title, unless otherwise specified by an organic statute.
(2) If an entity that is required to maintain a registered agent pursuant to this part 7 has no registered agent, or if the registered agent is not located under its registered agent name at its registered agent address, or if the registered agent cannot with reasonable diligence be served, the entity may be served by registered mail or by certified mail, return receipt requested, addressed to the entity at its principal address. Service is perfected under this subsection (2) at the earliest of:
(a) The date the entity receives the process, notice, or demand;
(b) The date shown on the return receipt, if signed on behalf of the entity; or
(c) Five days after mailing.
(3) This section does not prescribe the only means, or necessarily the required means, of serving an entity in this state.