All ShowMojo text messages are transactional in nature. ShowMojo does not use text messages nor voice calls for marketing. There is no opt out option because each text message is sent to a prospect only as the result of an action taken by the prospect — and to a phone number furnished by the prospect (either directly or via a customer of ShowMojo).
Because ShowMojo does no text-based nor voice-based outbound marketing, there is no opt-out procedure nor list in place.