Twilio Calling Integration

Sendblue integrates with Twilio to enable outbound voice calling from your dashboard. This guide covers how to verify your caller ID and connect it to Sendblue.

Verify Your Caller ID with Twilio

Before making calls through Sendblue, you must verify your phone number as an outgoing caller ID in Twilio.

Step 1: Add Your Number in Twilio Console

1. Log in to your Twilio Console
2. Navigate to Phone Numbers → Manage → Verified Caller IDs
3. Click Add a new Caller ID
4. Enter your phone number in E.164 format (e.g., +14155551234)

Step 2: Enable Inbound in Sendblue

1. Log in to your Sendblue dashboard
2. Navigate to settings
3. Enable inbound messaging for your line

This allows Sendblue to receive the verification SMS from Twilio.

Step 3: Complete Verification

1. In Twilio, when prompted for verification method, select SMS
2. Twilio will send a 6-digit verification code via SMS
3. The code will appear in your Sendblue dashboard
4. Enter the code in Twilio to complete verification

For more details, see Twilio’s guide: How to Add and Remove a Verified Phone Number or Caller ID with Twilio

Step 4: Make Calls via Twilio API

Once verified, use the Twilio API to make outbound calls with your verified caller ID. See Twilio’s Voice API documentation for implementation details.

Step 5: Configure Inbound Call Forwarding

To receive inbound calls:

1. Go to your Sendblue settings
2. Configure call forwarding to a Twilio number
3. Incoming calls will now route to your system via Twilio

Important Notes

• Twilio powers voice only: Twilio handles voice calls. SMS, RCS, MMS, and iMessage are all handled by the Sendblue API.
• E.164 format: Always use E.164 format for phone numbers (e.g., +14155551234).

Programmatic Verification

If you need to verify multiple numbers, Twilio provides an API for bulk verification. See Verifying Caller IDs at Scale for details.