How to Set Up Two-Way SMS Conversations

How Two-Way SMS Works

When you send an SMS campaign, recipients can reply directly to the number the message came from. Their reply is captured by your SMS provider via a webhook and delivered to the platform, where it appears in your SMS inbox alongside the original conversation thread. You can then respond from the inbox, and your reply is sent back to the subscriber's phone as a regular text message.

The conversation persists as a thread tied to the subscriber's phone number, so both you and the subscriber can see the full history of the exchange. If the same subscriber texts again days later, their new message appears in the existing conversation thread with full context of previous interactions.

Setting Up Two-Way SMS

Use Cases for Two-Way SMS

Customer Support

Many customers prefer texting over calling for support questions. Two-way SMS gives them a convenient channel to ask questions, report issues, or request help. Support conversations via SMS are asynchronous, meaning the customer does not have to stay on hold, and your team can handle multiple conversations simultaneously.

Appointment Scheduling

Let customers text to book, reschedule, or cancel appointments. A subscriber might reply "Can I move my appointment to Friday?" and your team (or AI) can respond with available times. This is faster and more convenient than making a phone call for both parties.

Order Inquiries

"Where is my order?" is one of the most common customer questions. Two-way SMS lets customers text their order inquiry and receive a tracking update or status response without navigating a website or waiting on hold.

Feedback Collection

After a purchase or service, send a follow-up text asking for feedback. "How was your experience today? Reply with a rating 1-5." Subscribers who reply with a low rating can be immediately routed to a support agent, while high ratings can be followed up with a review request.

Polls and Surveys

Run quick polls via SMS. "Which new flavor should we add? Reply A for Mango, B for Strawberry, C for Vanilla." The simplicity of replying with a single letter makes participation effortless, and response rates are much higher than email surveys.

Managing Conversation Volume

As your SMS list grows, two-way conversations can generate significant volume. Strategies for managing this:

• Use AI for first response. Let the AI chatbot handle the initial reply. Most questions (hours, pricing, shipping) can be answered automatically, leaving only complex issues for human agents.
• Set response time expectations. If you cannot respond instantly during off-hours, set up an auto-reply: "Thanks for your message. Our team responds within 2 business hours." This prevents frustration while being honest about response times.
• Assign by topic. Route conversations to different team members based on keywords or intent. Sales questions go to the sales team, support issues go to support.
• Use canned responses. Create templates for common replies that agents can send with one click, personalizing them with the subscriber's name and details.

Compliance for Two-Way SMS

Two-way conversations have specific compliance considerations. Replies you send to an incoming message are generally considered part of the same conversation and do not require separate consent, as long as the subscriber initiated the exchange. However, if a subscriber texts you with a question and you respond with an answer plus a marketing promotion, the promotional portion still needs prior marketing consent. Keep support and marketing messaging separate to stay compliant.