Article 21

SMS / Messaging Terms

Last updated: June 8, 2026

Program description

Article 21 LLC ("Article 21") builds and operates agentic scheduling systems for small businesses. As part of one such system — a trip-booking and flight-change notification service for private drivers — automated operational text messages are sent to the private drivers who use the system. Messages include booking confirmations, schedule-conflict prompts, scheduling clarifications, and flight delay or cancellation alerts, so the driver can keep their schedule accurate.

This is not a marketing or promotional SMS program. We do not send advertising or promotional text messages, and these messages are not sent to the general public.

Who receives messages, and how consent is obtained

Recipients are the private drivers who operate the system. There is no public sign-up, and providing SMS consent alone does not activate any service. A driver engages the service contractually during onboarding, at which point SMS notifications are configured as one component of that service. As part of onboarding the driver provides their own mobile number and signs a written consent form — our Operational SMS Consent Form — agreeing to receive these operational messages. Thereafter, a driver's scheduling message to the program number constitutes consent to receive operational replies related to that scheduling activity. No third-party, purchased, or client numbers are ever messaged.

Message frequency

Message frequency is recurring and varies based on the driver's ride and flight activity.

Cost

Message and data rates may apply based on your mobile carrier and plan. Article 21 does not charge for the messages themselves.

Opt-out and help

Carriers are not liable for delayed or undelivered messages.

Program number(s)

Operational messages are sent from Article 21's program number(s): available on request.

Privacy

Mobile information and SMS data are handled as described in our Privacy Policy. No mobile information, SMS opt-in data, or consent is shared with or sold to third parties or affiliates for marketing or promotional purposes.

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