GoHighLevel runs on Twilio infrastructure under its LC Phone system, but the platform also supports Bring Your Own Twilio (BYOT), letting you connect your own Twilio account directly so you control the numbers, the billing, the throughput limits, and the A2P 10DLC registration independently from GoHighLevel's shared carrier setup. This matters for agencies and businesses that have experienced deliverability problems on shared GHL numbers, that need specific geographic numbers for local presence, or that want to preserve number reputation when migrating between platforms. Connecting your own Twilio account to GHL takes about 20 minutes and gives you full carrier-level control without losing any GoHighLevel workflow, automation, or conversation functionality.
What You Need Before You Start
You need an active Twilio account with billing configured and at least one phone number purchased, plus a completed A2P 10DLC Brand and Campaign registration if you are sending application-to-person SMS in the United States. Complete your A2P Brand registration in the Twilio Console under Messaging, then Regulatory Compliance, then Brands, and then register your Campaign under Campaigns, as GoHighLevel cannot complete A2P registration on your behalf when you operate in BYOT mode. In GoHighLevel, navigate to Settings, then Phone Numbers, and confirm the option to connect your own Twilio account is visible, which is available to all GHL Agency accounts and some sub-account configurations. Gather your Twilio Account SID and Auth Token from the Twilio Console under Account, then General Settings, as these two credentials are the only values you paste into GoHighLevel to complete the account link.
Step-by-Step Integration Guide
In GoHighLevel Agency settings, go to Phone Numbers and select the option to connect your own Twilio account, then enter your Twilio Account SID and Auth Token in the provided fields and click Connect to establish the integration. After connecting, GoHighLevel automatically sets the webhook URLs on your Twilio account so that inbound SMS and calls on your Twilio numbers are routed through the GHL platform conversation engine without additional configuration. Purchase or import a phone number through the GHL BYOT interface and it will appear in your Twilio Console as an active number with GHL-managed webhooks set at the Messaging and Voice URL fields pointing to GoHighLevel's inbound processing endpoints. Assign the number to a GHL sub-account location by navigating to the sub-account phone settings, adding the number to that location's pool, and using it as the From sender in GHL workflow SMS actions for all campaigns running under that location.
Common Issues and How to Fix Them
The most common issue after connecting BYOT is that inbound messages and calls are not received in GoHighLevel because a previously configured Twilio webhook on the number conflicts with the GHL-managed webhook endpoint. Check each Twilio number in the Console under Phone Numbers, then Manage, then Active Numbers, and verify the Messaging URL and Voice URL match the GHL-provided webhook endpoints, which follow the pattern https://services.leadconnectorhq.com/twilio with a path specific to your account. Deliverability problems after switching to BYOT are almost always caused by missing or incomplete A2P 10DLC Campaign registration, because GHL's LC Phone numbers are pre-registered on a shared campaign while your own Twilio numbers require an independent campaign linked to your registered brand. Submit your Campaign through the Twilio Console and allow 3 to 7 business days for carrier approval before sending any marketing SMS volume on the newly connected numbers. A third issue is GHL showing numbers as inactive after the BYOT connection when the Twilio Auth Token has been rotated in the Twilio Console. Re-enter the updated Auth Token in GHL's Twilio connection settings to restore the link without needing to re-purchase or re-configure any phone numbers.
How to Get More from This Integration
Register a Twilio Messaging Service and assign all your BYOT numbers to it, then configure GHL to use the Messaging Service SID as the sender in workflow SMS actions to benefit from automatic sender selection, sticky sender assignment per contact, and fallback number failover on high-volume campaigns. Use Twilio's built-in Advanced Opt-Out management within the Messaging Service to maintain a shared suppression list across all numbers in the pool, so an opt-out received on one number is automatically honored by every other number in the service without any custom middleware. Monitor delivery rates independently from GoHighLevel by checking the Twilio Console under Insights, then Messaging, filtering by your Messaging Service to see error code breakdowns, carrier filtering rates, and delivery latency that may not be surfaced in GHL's native reporting. Set up Twilio Alerts under Monitor, then Alerts to receive email or webhook notifications when error rates on your numbers exceed thresholds you define, giving you early warning of deliverability degradation before it measurably impacts campaign performance.
Conclusion
Bringing your own Twilio account into GoHighLevel gives you carrier-level control, independent compliance registration, and full ownership of your number reputation that shared LC Phone numbers cannot provide. Contact Telphi Consulting to handle the A2P registration, BYOT configuration, and number migration for your GHL agency.
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