How to Validate Contact Phone Numbers in HighLevel (Using PhoneValidator)
Want to make sure your contacts can actually receive text messages before you hit send?
🔍 Why Phone Validation Matters
HighLevel does have built-in validation — but only after the first SMS is sent. That’s a problem if you're:
- Importing large lists,
- Running a database reactivation campaign,
- Or just want to avoid wasting texts on landlines or fake numbers.
- ✅ Avoid Twilio or LC Phone errors (and possible suspensions).
- ✅ Improve your campaign deliverability and show-up rates.
- ✅ Detect landlines, VOIP, and fake numbers before messaging.
A contact books an appointment and enters a landline. HighLevel flags it later as "can’t receive SMS."
This hurts your show rate because they’ll miss reminders if they’re not receiving texts.
Pro tip: If a number is non-textable, use automation to send an email asking for an updated mobile number!
🔧 The Tools You’ll Use- HighLevel Workflow Automation
- PhoneValidator API
- ✅ FREE Snapshot download (linked in the description)
📦 What’s in the Snapshot?Cost: ~$0.004 per contact
Validate 1,000 contacts = Just $4!
The prebuilt snapshot includes:
- 1 Custom Value (your API Key)
- 1 Workflow Automation
You'll paste your PhoneValidator API key here.
(To get it, sign up at PhoneValidator.com and deposit $10 — which can last you a long time!)
Here’s a breakdown of the workflow:
🔹 Trigger: When Contact is CreatedYou can also bulk-add existing contacts to the workflow.
🔹 Drip SchedulingTo avoid API rate-limit errors, the automation uses a drip feed of:
- 25 contacts every 2 seconds
This sends a request to PhoneValidator with:
- Your API key
- Contact's phone number
It returns:
- Whether it’s fake
- Line type (cell, landline, VOIP)
- Whether it’s textable
Based on the response:
Textable?
➤ Add tag Textable: YesNot Textable?
➤ Add tag Textable: No
➤ Enable DND for SMS
➤ (Optional) Send email to update phone number
- Create Smart Lists for textable vs. non-textable contacts
- Clean up your list by deleting non-textables
- Improve show rates by ensuring contacts get SMS reminders
Grab the automation snapshot from here - https://highlevelfreaks.com/phone-validator, drop it into your HighLevel account or client location, add your API key, and you’re good to go!
🏁 Final ThoughtsWith just a few minutes of setup and a few cents spent, you can:
- Dramatically improve text delivery,
- Avoid provider issues,
- And keep your campaigns running smoothly.\\
Use it for database reactivations or any SMS-focused strategy — and deliver messages that actually reach your audience.