# "How to Connect DMark SMS to On-Chat"

> "On-Chat integrates with DMark SMS gateway so your team can receive and respond to customer SMS messages in a centralized inbox with automated routing."

URL: https://on-chat.live/guides/how-to-connect-dmark-sms-to-on-chat/
Last updated: 2026-11-14

## Introduction
DMark is an SMS gateway service that enables businesses to send and receive SMS messages through a reliable messaging infrastructure. With DMark integrated into On-Chat, your support team can manage two-way SMS customer conversations in a shared inbox, with automation tools to streamline responses and routing.

**SEO Keywords:** DMark SMS integration, DMark On-Chat, SMS gateway helpdesk, DMark API customer support, two-way SMS support, SMS inbox integration

## Prerequisites
- An active DMark account with API access enabled
- DMark API credentials (API key or username/password)
- On-Chat account with admin access
- A DMark virtual number or sender ID for two-way SMS
- Inbound message webhook configuration access in DMark

## Step 1: Access Your DMark API Credentials
Log in to your DMark account and navigate to the API or developer settings. Copy your **API Key** or note your API **Username** and **Password**. These credentials are required for On-Chat to authenticate and send messages through DMark.

## Step 2: Set Up a Two-Way SMS Number
In your DMark account, ensure you have a virtual number or sender ID configured for two-way SMS. This number is what customers will text to reach your team. Contact DMark support if you need a dedicated inbound number provisioned.

## Step 3: Create an SMS Inbox in On-Chat
In On-Chat, navigate to **Settings** → **Inboxes** → **New Inbox** and select **SMS**. Choose **DMark** as the SMS provider. Enter your API credentials and your virtual number. Save to generate the webhook URL that DMark will use to deliver inbound messages.

## Step 4: Configure the Inbound Webhook in DMark
In your DMark account, find the inbound message callback settings. Set the inbound message URL to your On-Chat webhook endpoint. DMark will POST all incoming customer SMS messages to this URL, routing them into your On-Chat inbox as new conversations.

## Step 5: Add Agents and Configure Routing
In On-Chat, go to **Settings** → **Inboxes** → select your DMark inbox → **Collaborators**. Add the agents who will handle SMS conversations. Configure auto-assignment rules to distribute conversations efficiently among your team.

## Step 6: Test the Integration
Send a test SMS to your DMark number. Verify the message appears in your On-Chat inbox. Reply from an agent and confirm the customer receives the reply. Check both DMark delivery reports and On-Chat conversation logs to verify everything is working correctly.

## Best Practices
- Create canned responses for common questions to speed up SMS reply times
- Use On-Chat automation rules to tag and prioritize urgent SMS conversations
- Monitor DMark delivery reports to ensure high message delivery rates
- Set up an auto-reply message for outside business hours to manage customer expectations

## Keep reading

- [How to Build a WhatsApp Chatbot Without Code](https://on-chat.live/guides/how-to-build-a-whatsapp-chatbot/): A step-by-step tutorial for building a dynamic WhatsApp chatbot in a visual flow builder, from your first message to live data and agent handoff.
- [Chatbot Flow Design: 12 Best Practices](https://on-chat.live/guides/chatbot-flow-design-best-practices/): Practical rules for designing chatbot conversation flows that customers finish: branching, fallbacks, personalisation, handoff and testing.
- [Make Your Chatbot Dynamic with Webhooks](https://on-chat.live/guides/dynamic-chatbot-webhooks/): Connect your chatbot flows to live data. Learn how webhooks, expressions and splits turn a scripted bot into one that answers with real information.