How to Forward Text Messages to Slack

Send SMS notifications directly to your Slack channels using webhooks.

Introduction

Forward your SMS messages to Slack channels so your team never misses important texts. SMS Forwarder uses Slack Incoming Webhooks to deliver messages directly to any channel.

Step 1: Create a Slack Webhook

1. Go to Slack API: Incoming Webhooks
2. Click Create an App (or select an existing app)
3. Enable Incoming Webhooks
4. Click Add New Webhook to Workspace
5. Select the channel where you want messages posted
6. Copy the Webhook URL

Step 2: Add to SMS Forwarder

1. Open the SMS Forwarder app
2. Tap Add Destination
3. Select Slack
4. Paste your Webhook URL
5. Tap Save

Step 3: Test It

Send a test SMS to your phone and verify it appears in the Slack channel. The message will include the sender’s number and the message content.

Advanced Tips

• Multiple channels: Create separate webhooks for different channels and add multiple Slack destinations in the app.
• Filtered forwarding: Use keyword filters to only forward specific messages to Slack (e.g., only 2FA codes).
• Custom formatting: Messages are formatted with sender info and timestamp for easy reading.

Troubleshooting

• Messages not appearing? Verify the Webhook URL is correct and the Slack app is installed in your workspace.
• Wrong channel? Create a new webhook pointed at the correct channel.
• Rate limited? Slack allows ~1 message per second per webhook. This is rarely an issue for SMS forwarding.