Seeking Workaround: How to reply to CallRail Google LSA Message Leads directly from HubSpot?

Hi everyone,

We currently track Google Local Services Ads (LSA) message leads in CallRail and use a Zapier integration to push incoming lead data and tasks directly into HubSpot for record-keeping.

Our main operational issue is that our team operates entirely within HubSpot and needs to communicate with leads from there. However, because Google LSA message leads rely on a specific relay system tied to the CallRail tracking number, texting the contact phone number directly from HubSpot breaks the relay connection. CallRail support confirmed that replies currently must be sent via CallRail's Messaging inbox or the Google LSA tool to successfully reach the customer.

Having our team switch between tools is a no go for our workflow, or else we would disrupt our commercial team lead distribution and SLA management.

Has anyone in the community found a workaround, custom integration (e.g., using CallRail API, webhooks, Zapier, or a specific SMS integration), or alternative setup to allow front-line reps to reply to LSA message leads directly from HubSpot without breaking the relay?

Any advice or setup tips from peers who have tackled this would be greatly appreciated!