In short: The Mumble app in Zapier lets other apps, like Google Sheets, Shopify or Calendly, send WhatsApp messages and add customers in Mumble, with no code. The app has actions only. To start a Zap from something that happens in Mumble, use a webhook.
Connect Mumble to Zapier
- In Mumble, go to Settings > Technical Profile > API Key. If you have no key yet, create one.
- Click Copy.
- In Zapier, create a Zap and add an action step.
- Search for Mumble and choose an action.
- Click Connect a new account, paste the key and confirm.
Treat the key like a password. Anyone with it can send messages from your number.
Available actions
- Add New Customer: adds a customer with phone, name and other fields.
- Send Template and Send Template With Variables: send an approved template.
- Send Text Message: sends free text, only while the 24-hour window is open.
- Add New Label and Delete Label: manage lists.
- Make an API Call: anything else the Mumble API supports, like assigning an agent or adding a customer to a list.
Examples: a new form lead gets a welcome template, a Shopify order gets a Utility confirmation, a Calendly booking gets a reminder a day before (use Zapier’s Delay Until step).
Start a Zap from a Mumble event
- In Zapier, create a Zap with the Webhooks by Zapier > Catch Hook trigger and copy the URL.
- In Mumble, paste the URL in one of two places:
- For a specific event: an automation with the Send Webhook action.
- For every incoming message: Settings > Technical Profile > Forward message to Webhook.
- Trigger the event once so Zapier gets sample data, then add your steps.
More in Webhooks in Mumble. For complex flows or high volume, Make is usually cheaper.
Common questions
The Zap runs but the message is not sent
Check that the phone number is in international format with no + or leading 0 (972501234567), and that the template is approved. The error is shown in Zap History.
I get “Conversation is closed”
The customer’s 24-hour window is closed, so free text cannot be sent. Use a template action instead.
My API key leaked
The key cannot be replaced from the Mumble screen. Contact Mumble support to issue a new one.
Does this cost extra?
Zapier bills by tasks. Template sends and API calls count toward your Mumble plan, and Meta charges for delivered messages. See Paying Meta and WhatsApp Messaging Costs.