SMS Keyword Opt-In
Set up a keyword — JOIN, VIP, SUMMER — and when someone texts it to your number, they're opted in with consent captured automatically. Put it on a poster, a receipt, a shop window; grow SMS the compliant way.
SMS is the highest-attention channel you have, but it lives or dies on clean consent. Keyword opt-in makes growing that list both easy and compliant: you define a keyword, and when a customer texts it to your number, they're subscribed — with the opt-in recorded automatically, timestamped and documented, exactly as consent law expects.
That turns every physical and digital surface into a subscribe point — a poster, a receipt footer, a checkout screen, a social post: "Text VIP to 12345 for early access." No form to build, no data-entry, and because the consent is captured at the source, the list you grow is one you can actually send to. It feeds straight into your segments and journeys, so a keyword can trigger a welcome flow the moment someone joins.
Benefits
Why it matters
Consent captured at the source
The opt-in is the customer's own text, recorded and timestamped — the cleanest consent there is.
Every surface becomes a signup
Posters, receipts, shop windows, social — anywhere you can print a keyword becomes a list-growth channel.
Capabilities
What you can do
Keywords
Define one or many keywords; each inbound match subscribes the sender with logged consent.
Triggers a welcome
Feed the opt-in straight into a journey so new subscribers get an instant welcome.
Frequently asked questions
Does this satisfy consent rules?
A customer texting your keyword is an explicit, documented opt-in — among the strongest consent signals available. The platform records when and what they sent. As always, confirm your specifics with your own legal advice.
Related
SMS API
A carrier-grade SMS API with smart routing, delivery receipts and two-way messaging across 190+ countries.
Consent & Preference Center
A self-serve center where customers manage channels, topics and consent — enforced on every send.
Segmentation & Audiences
Create real-time segments from any event, trait or behaviour, and activate them across every channel.
Journey Orchestration
A visual, drag-and-drop builder for multi-step, cross-channel journeys triggered by real-time events.
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