Setting Up a Verified Caller ID in Synthflow

A Verified Caller ID allows you to make outbound calls from your AI agent using a number you already own—through a phone number purchased from Synthflow. This is ideal for maintaining brand identity or using a business number your customers already recognize.

Steps to Set Up a Verified Caller ID

1. Go to the Phone Numbers settings

   • Log into Synthflow

   • Navigate to “Phone Numbers” in the sidebar.

2. Click “Verify Existing Number”

   • Instead of buying a number, select the “Verify Number” option.

3. Enter Your Phone Number

   • Input the number you’d like to verify (e.g., your business landline or mobile).

4. Choose Verification Method

   • You’ll be prompted to receive a code via:

     • Call: A voice call will read out the verification code.

     • SMS: You’ll receive a text with the code (if the number supports SMS).

5. Enter the Code in Synthflow

   • Input the verification code into the popup field.

6. Success Confirmation

   • If verified successfully, the number will appear in your Phone Numbers list labeled as “Verified”.

Notes & Limitations

• Verified numbers only work on V1 at this time [Dated:6/12/25]

• Verified numbers can only be used for outbound calling—you cannot receive inbound calls on them.

• Only one assistant can be assigned to a verified number at a time.

• Your verified caller ID will appear on customers’ phones as the outgoing caller ID, helping build trust and reduce call screening.

Why Use Verified Caller ID?

If you run into issues during setup (e.g., code not arriving or verification failing), check if:

• The number can receive calls or SMS from automated systems.

• Carrier or VoIP restrictions are blocking verification traffic.

Need help? Reach out to support or visit our full Phone Numbers Guide.