AI Voice Agents
AI Voice & SMS Follow-Up
An n8n-orchestrated system that follows up every new lead with SMS and a real AI voice call, so no one waits on a human to be free.
Client — Capability build
01The brief
The problem
Leads that don't get a fast follow-up go cold, and most businesses can't staff someone to call and text every single lead the moment they come in.
Relying on a person to notice a new lead and start the follow-up sequence meant real gaps, especially outside business hours or during a busy day.
I needed a system that follows up automatically, by SMS and by a real voice call, the second a lead enters the CRM, without a person having to trigger any of it.
02Implementation plan
From brief to build
How we turned the client's challenge into a system their team actually uses.
Trigger from the CRM instantly
Built the flow to fire the moment a new lead lands in GoHighLevel, off a live webhook, so nothing depends on someone checking the pipeline.
Text first, call second
Sequenced an immediate SMS follow-up followed by an AI voice call, so the lead hears from the business twice, fast, through two different channels.
Orchestrate it all in n8n
Built the full sequencing, timing, and branching logic in n8n, so the system can adapt based on whether the lead replies to the text before the call goes out.
Log everything back to the CRM
Wired outcomes from both the SMS and the call back into GoHighLevel automatically, so the sales team always has a current record.
03Before & After
What changed
Before
- New leads waited on a person to notice them and start the follow-up sequence by hand.
- Follow-up happened through a single channel at a time, if it happened promptly at all.
- Outcomes from calls and texts had to be logged manually, which meant records were often incomplete or delayed.
After
- Every new lead gets an SMS and a real AI voice call automatically, within moments of arriving in the CRM.
- Two channels working together means a much higher chance of reaching the lead before they go cold.
- Every outcome logs back into the CRM automatically, so the record is always current.
04Why this approach
Single-channel follow-up leaves too much reach to chance. A missed call or an ignored text can mean a lost lead, and either one happens often enough to matter.
Sequencing SMS and a real AI voice call together, triggered instantly and orchestrated in n8n, gave leads two real chances at a fast response instead of one.
Neither channel needed a person managing it. The system decides what happens next based on how the lead actually responds.
05Impact & benefits
Every new lead gets a two-channel follow-up, SMS and a real voice call, within moments of arriving, with zero manual triggering.
Follow-up channels
2 (SMS + voice)
Response time
Moments, not hours
Manual triggering
Removed
Two channels of follow-up instead of one, for a real shot at reaching every lead.
No lead waits on a person to start the sequence.
Every outcome logs automatically, keeping the CRM record current.
Consistent follow-up regardless of time of day or team availability.
Branching logic adapts the sequence to how the lead actually responds.
06Business outcomes
Business outcomes
Instant, automatic SMS and AI voice follow-up on every new lead.
Branching logic in n8n that adapts based on how the lead responds.
Automatic CRM logging for every outcome, across both channels.
Triggers directly off a live GoHighLevel webhook, no manual step.
Two-channel sequencing designed to maximize real response rate.
Built as a repeatable capability, not tied to one specific business.
07Built with
Tools & capabilities
n8n
ElevenLabs
GoHighLevel