SMS compliance, STOP, and opt-outs

Text messaging is regulated, and carriers actively filter traffic that breaks the rules. Rezi handles the mechanics for you, but it helps to understand what’s happening.

Two forces shape business texting in the US. The law (the TCPA and related rules) requires consent and honors opt-outs, with real penalties for ignoring them. The carriers (AT&T, Verizon, T-Mobile) run their own filtering on top, scoring senders and silently dropping traffic that smells like spam. Compliance therefore isn’t just legal hygiene, it’s deliverability: the same practices that keep you lawful keep your messages actually arriving.

Opt-outs are automatic

If a guest replies STOP (or UNSUBSCRIBE, CANCEL, etc.), the carrier flags them as opted-out and Rezi immediately stops all outbound messages to that number. Guests can opt back in by replying START. You can also see and toggle opt-out status in the Guests table.

The enforcement is absolute by design: opted-out numbers are excluded from broadcasts, reminders, and every other outbound message, there is no override, and that’s what protects you. Note the practical wrinkle: an opted-out guest can still text *in*, and Rezi will still answer them (responding to an inbound message is permitted), but proactive outbound stays blocked until they reply START. If a guest says they opted out by accident, just have them text START to the building number.

10DLC registration

Business texting in the US requires 10DLC (10-digit long code) registration, which tells carriers who you are and what you send. Rezi manages this registration for your numbers so your messages are trusted and delivered reliably.

Without registration, carriers treat a number sending business volume as a likely spammer, throttling or dropping its traffic. Registration is the difference between your check-in messages landing instantly and landing never. It’s entirely handled for you on every Rezi-managed number, so there’s nothing for you to set up or maintain.

Consent, in plain terms

You’re on solid ground with the people you actually text: guests with active reservations and guests who texted you first have all established a relationship and an expectation of messages. Where hosts get in trouble is messaging purchased lists or long-departed contacts, don’t. A useful habit: mention the property number in your booking confirmation and check-in instructions (“questions? text the property line”), which makes the consent story explicit.

If deliverability ever degrades

Symptoms like broadcasts showing failures or guests reporting missing texts usually trace to content (heavy links, spam-pattern wording) or stale numbers rather than registration, the diagnostic checklist in messages aren’t sending walks through it. Keeping your contacts current and removing dead numbers quietly improves your sender reputation over time.