How to Run iMessage and SMS Side by Side in GoHighLevel (GHL iMessage Integration Guide)

GoHighLevel iMessage integration lets you send blue bubbles to iPhone users and standard SMS to Android users — from a single GHL workflow, without a second account. This guide walks you through the exact setup: checking iMessage availability via API, branching your workflow, syncing replies back to GHL, and avoiding unnecessary API costs by using N8N instead of GHL's built-in HTTP action.

TL;DR: Add a single API check at the start of your GHL outreach workflow. If the contact has iMessage, route through Tuco AI's iMessage API. If not, send standard SMS. Both replies land in the same GHL conversation. Total setup time: 30 minutes.

Why Would You Run iMessage and SMS Side by Side in GoHighLevel?

The answer is simple: 60-65% of US smartphone users have iPhones. That means the majority of your leads can receive iMessage — blue bubbles, read receipts, typing indicators, and zero carrier filtering.

The remaining 35-40% use Android. They can only receive SMS or RCS.

If you send SMS to everyone, you're giving up a massive deliverability advantage for the majority of your list. SMS gets filtered 20-40% of the time. iMessage delivers 94%+ with no A2P registration, no carrier filtering, and no "Spam Likely" labels.

But if you only send iMessage, you miss 35-40% of your contacts entirely.

The solution: check each contact's device type and route accordingly.

How Does the "Check iMessage Availability" API Work?

Tuco AI provides a simple REST endpoint that tells you whether a phone number is registered on iMessage.

The request:

GET https://api.tuco.ai/v1/check-availability?phone=+15551234567

The response:

That's it. One API call, one boolean answer. Response time is under 500ms.

You can also batch-check up to 100 numbers at once using the /check-availability/batch endpoint. This is useful for pre-processing imported lead lists before running campaigns.

Key details:

• The check queries Apple's iMessage registration system in real time
• Results are accurate to the minute — if someone just switched from Android to iPhone, it picks that up
• No message is sent during the check; it's a read-only lookup
• Cost: included in your Tuco AI plan, no per-check fee

How Do You Set Up a GHL Workflow That Branches iMessage and SMS?

Here's the step-by-step workflow setup. You can build this in GHL's native workflow builder using an HTTP action, or (recommended) in N8N connected to GHL via webhook.

Step 1: Trigger the workflow.

Set your GHL workflow trigger to fire when a contact enters a pipeline stage, fills out a form, books an appointment, or hits any event you're using for outreach.

Step 2: Call the iMessage availability API.

Add an HTTP request node. Send a GET request to https://api.tuco.ai/v1/check-availability with the contact's phone number.

Step 3: Branch based on the response.

Add an If/Else condition:

• If imessage_available equals true → send via iMessage
• Else → send via GHL's native SMS

Step 4: Send iMessage (true branch).

Add another HTTP request that calls Tuco AI's send endpoint:

Send a POST request to https://api.tuco.ai/v1/send with the contact's phone number and your message text. The API handles iMessage delivery and returns a confirmation with message ID and status.

Step 5: Send SMS (false branch).

Use GHL's native "Send SMS" action. Same message text, delivered via your GHL phone number.

Step 6: Log the result.

Add a custom field update on the contact record: message_channel = "imessage" or message_channel = "sms". This lets you segment and report later.

The Workflow Diagram

[Trigger: New Lead / Pipeline Stage]
         |
         v
[HTTP: Check iMessage Availability]
         |
    ┌────┴────┐
    |         |
  TRUE      FALSE
    |         |
    v         v
[HTTP: Send   [GHL: Send
 iMessage     SMS Action]
 via Tuco]
    |         |
    v         v
[Update       [Update
 Field:       Field:
 imessage]    sms]
    |         |
    └────┬────┘
         |
         v
   [Wait for Reply]

Total nodes: 6. Total setup time: 20-30 minutes if you've built GHL workflows before.

Do You Need Two GoHighLevel Accounts for This?

No. This is the most common misconception we hear from GHL agency owners.

You run everything from a single GHL sub-account. The iMessage check and send happen via external API calls (HTTP request nodes). The SMS send uses GHL's native action. Both operate on the same contact record.

What you need:

• One GHL account (your existing one)
• One Tuco AI account (starts at $59/month)
• An N8N instance or GHL's HTTP request action

What you don't need:

• A second GHL sub-account
• A second phone number for iMessage
• Any changes to your existing GHL SMS setup

Your existing SMS workflows keep running exactly as they are. You're adding an iMessage layer on top, not replacing anything.

How Do You Avoid GHL API Call Costs?

GHL charges for API calls made through their built-in HTTP request action. If you're running high-volume campaigns, these costs add up.

The fix: use N8N instead of GHL's native HTTP action.

How it works with N8N:

1. GHL fires a webhook when a contact hits your trigger
2. N8N receives the webhook (free)
3. N8N calls Tuco AI's check-availability API (free — it's N8N's HTTP node)
4. N8N calls Tuco AI's send API or sends back to GHL for SMS (free)
5. N8N updates the GHL contact via webhook (free)

You save $20-60/month per 1,000 leads by moving the API logic outside GHL. At scale — 5,000+ leads/month — the savings are significant.

N8N also gives you more flexibility: retry logic, error handling, AI nodes for personalization, and multi-step sequences that would require multiple GHL workflows.

How Do iMessage Replies Sync Back to GHL Conversations?

This is the part everyone asks about. When a lead replies to your iMessage, how does it show up in GHL?

Tuco AI sends a webhook to your GHL account for every inbound reply.

The webhook payload includes:

• The contact's phone number
• The reply text
• A timestamp
• The original message ID

GHL matches the phone number to the existing contact record. The reply appears in the GHL conversation tab — right alongside any SMS messages, emails, or other communication.

Your team sees one unified conversation thread. They don't need to switch between apps. They don't need to know whether the contact is on iMessage or SMS.

Reply handling options:

• Manual: Your sales team responds directly in GHL (reply routes through iMessage or SMS based on the original channel)
• Automated: Your GHL workflow triggers a follow-up sequence based on the reply content
• AI-powered: Route the reply to an AI node in N8N for automated qualification and response

What Are the Daily Limits and How Should You Ramp Up?

Apple monitors iMessage sending patterns. New Apple IDs need a warm-up period — just like email domains.

Ramp-up best practices:

• Start at 15 messages/day, not 20 — leave headroom
• Send during business hours only (9am-6pm recipient's time zone)
• Space messages 30-60 seconds apart — don't blast 20 messages in 2 minutes
• Mix outbound with some "normal" iMessage activity on the Apple ID
• Don't send identical messages to every contact — personalize with first name, company, or context

Scaling beyond 50/day:

Each Apple ID caps at ~50 messages/day. To send more, add Apple IDs.

Tuco AI handles Apple ID rotation automatically. You don't manage individual Apple IDs. You send via the API; Tuco distributes across your available IDs and respects per-ID limits.

If an Apple ID gets flagged, Tuco recreates it and starts the warm-up process again — no downtime for your campaigns.

What Does the Full Tech Stack Look Like?

Here's the recommended setup for running iMessage and SMS side by side in GHL:

For most agencies starting out: GHL + Tuco AI Email-to-Phone plan ($59/month) + self-hosted N8N on Railway ($5/month) = $64/month total to add iMessage to your GHL workflows.

That gives you 50 iMessage sends/day — enough to test the channel and prove ROI before scaling.

What Results Should You Expect?

Based on campaigns we've seen from GHL agencies running this dual-channel setup:

The biggest win isn't just higher response rates — it's speed. iMessage recipients reply in minutes, not hours. For speed-to-lead workflows, that difference closes deals.

How Do You Get Started Today?

Step 1: Sign up for Tuco AI at tuco.ai/demo. Start with the Email-to-Phone plan at $59/month.

Step 2: Set up N8N. Self-host on Railway ($5/month) or use N8N Cloud.

Step 3: Build the workflow described above. Copy the 6-node structure: Trigger → Check Availability → Branch → Send iMessage or SMS → Log.

Step 4: Test with 10 contacts. Verify iMessage delivery, SMS fallback, and reply sync.

Step 5: Ramp up. Follow the daily limit schedule. Add Apple IDs as volume grows.

The entire setup takes one afternoon. By tomorrow, your GHL campaigns can be sending blue bubbles to 60-65% of your leads — with zero changes to your existing SMS workflows.

Questions? Email bg@tuco.ai or book a walkthrough at tuco.ai/demo.