Step 1 — Create a New Auto Receive Webhooks Campaign

From your Topa.io dashboard, click Create New Campaign.

Select Auto Receive Webhooks Campaign.

You can choose to:

• Enable B2B Enrichment if you want Topa.io to automatically find cell phones for B2B contacts.

• Apply a daily voicemail limit to control cost. This applies a limit to how many voicemails are sent per 24 hours.

Enable Enrich B2B Contacts

You can enable Enrich B2B Contacts in the campaign settings if you want Topa.io to look up mobile numbers for B2B leads.

• Cost:

  • 1.3 credits if Topa.io finds a cell phone.

  • 0.3 credits if Topa.io does not find a cell phone.

• Where to view results: Enrichment results appear in the Enrichment page.

quick note: Enabling enrichment is optional but recommended for B2B lists where phone numbers are missing.

Step 2 — Enter Campaign Details

Fill in the required fields:

• Campaign Name

• Send Number

• AI Voice

Click Test to preview the AI voice.

Tip: Use punctuation such as - … or ! to improve clarity and flow of the AI-generated audio.

Step 3 — Generate Part 2 of Your Message

Part 2 must be generated before you can proceed.

• Click Generate to create the second part of your voicemail script.

• Listen to the preview to ensure it sounds natural.

• Adjust wording or punctuation if the pronunciation is incorrect.

Repeat the generation until the message sounds right for you, you can use punctuation like ! … or -

Step 4 — (Optional) Enable SMS Follow-Up

If your Twilio number is SMS-enabled:

• Toggle on Send SMS

• Type your SMS message (you can use the same variables as the voicemail)

Available variables include:

• [Name]

• [Company]

Step 5 — (Optional) Add a Campaign Webhook

If you want to receive sms and voicemail delivery results via a webhook you can enabled this feature.

Example webhook:

{
  "destinationnumber": "+447534000000",
  "name": "Jonny",
  "company": "",
  "email": "",
  "linkedinurl": "",
  "custom1": "",
  "custom2": "",
  "custom3": "",
  "date_time": "2025-12-08T16:12:27.833665+00:00",
  "campaign": "Test",
  "voicemail_text": "Hi Jonny...",
  "detail": "Voicemail drop successful (machine_end_beep)",
  "voicemail_status": "SUCCESS",
  "sms_status": "sent",
  "source": "webhook"
}

Step 6 — Create the Campaign and Copy Your Webhook URL

• Click Create Campaign

• Copy the Webhook URL shown on the confirmation screen

You’ll paste this URL into your third-party tool or CRM in the next step.

Step 7 — Connect Topa.io to Your Third-Party Tool or CRM

We can receive any webhook like this:

{
  "destinationnumber": "+447530000000",
  "name": "Richard",
  "company": "Pied Piper",
  "email": "richard@piedpiper.com",
  "linkedinurl": "https://www.linkedin.com/in/example/",
  "custom1": "Custom 1 Example",
  "custom2": "Custom 2 Example",
  "custom3": "Custom 3 Example"
}

The field names need to match the above.

IF you enabled B2B enrichment in Step 1, you don’t need to send a “destinationnumber”, we will use the “email” or “linkedinurl” field to enrich the contact with a number.

If your app does not natively send these fields in a webhook or your not sure how to transform the webhook to the right format, check out how can you do this in our other help guides via N8N, Make.com or Zapier.

Step 8 — (Optional) Give Clients or Staff a White-Label Login

You can provide your team or agency clients with a white-label login, where they can view:

• All enriched cellphone numbers

• All SMS replies

• All inbound calls

This allows your clients to see results without accessing your main account.