Question from Reddit user:
I was perusing the internet in search of a solution to my question, but I didn’t find anything substantive.
I own a marketing firm (in the United States) and want to do mass text/call outreach to my existing and current client base, with some small and legal outbound communication to cold/warm leads every so often.
That being said, is there any way I can utilize my existing OpenPhone phone number within GoHighLevel without paying for another number or porting over what I have now to that system within GHL?
If this is possible, how can I automate integrating the two together in a triggered workflow setup?
Thank you.
Answer from Nabil:
The short answer is:
No, you cannot directly use your existing OpenPhone number within GoHighLevel (GHL) for GHL’s native mass text/call features without porting it over, because GHL’s communication features are powered by its own internal telephony provider, Twilio, which requires their own numbers to function.
You would either have to use a separate number provided by GHL or officially port your OpenPhone number to GHL’s Twilio account, which means it would cease to work with OpenPhone.
However, you can achieve your goal of automating communication between the two systems through third-party automation tools like Zapier or by creating a custom, robust integration using the HighLevel API and OpenPhone’s API (referred to as the Quo API) to trigger actions in one platform based on events in the other.
The long answer is:
The core conflict here is that both GoHighLevel and OpenPhone use separate, distinct cloud telephony providers to handle all calling and texting.
OpenPhone is a standalone VoIP service, and GHL is a marketing platform that bundles its own communication capabilities using an integrated version of Twilio.
For a number to send texts or make calls within the GHL system, that number must be registered and provisioned within GHL’s Twilio environment.
This is why GHL prompts you to buy a new number or port an existing one.
Since you want to avoid both paying for another number and porting your existing number away from OpenPhone, the solution is not a direct integration, but a workflow automation bridge that lets your two systems talk to each other.
The simplest way to start is with a middleware tool like Zapier or Make, setting up triggers like “New Contact in GHL” to create a contact in OpenPhone, or “Incoming Call in OpenPhone” to create an activity in the GHL contact record.
The most powerful and reliable solution, which allows for complex, high-volume, and instantaneous automation without relying on a third-party middleware platform’s pricing structure, involves using the HighLevel API and the OpenPhone API (Quo API) directly.
For example, you can use a triggered workflow inside GHL that sends a Standard Event (or a custom payload) to a webhook endpoint hosted on a server-side platform like Google Cloud Platform or a managed solution like Stape.
When the server-side environment receives the trigger – say, a contact reaching the “outreach ready” stage – it can use the Quo API to initiate a text message or a call attempt directly from your OpenPhone number.
Conversely, when OpenPhone logs a new voicemail or a missed call, the server-side logic uses the HighLevel API to update the contact’s status in GHL, add a note to the conversation thread, or even inject the call recording URL.
This custom API bridge, especially when you leverage Google Tag Manager to track key behavioral events on your client’s web properties and then send that data to your server-side environment for even more refined GHL/OpenPhone orchestration, provides a complete, fast, and fully customizable solution that keeps your OpenPhone number active and integrates its functionality into your GHL workflows without the need for porting.
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