How to Validate Phone Numbers in HighLevel

Want to make sure your contacts can actually receive text messages before you hit send?

This guide will show you how to automatically validate phone numbers inside HighLevel using a simple automation and an affordable third-party service: PhoneValidator.

🔍 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.

Key Reasons to Validate:

• ✅ 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.

💡 Real Example

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)

Cost: ~$0.004 per contact
Validate 1,000 contacts = Just $4!

📦 What’s in the Snapshot?

The prebuilt snapshot includes:

• 1 Custom Value (your API Key)
• 1 Workflow Automation

🔑 Custom Value

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!)

🔁 How the Automation Works

Here’s a breakdown of the workflow:

🔹 Trigger: When Contact is Created

You can also bulk-add existing contacts to the workflow.

🔹 Drip Scheduling

To avoid API rate-limit errors, the automation uses a drip feed of:

• 25 contacts every 2 seconds

🔹 Webhook Step

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

🔹 Decision Tree

Based on the response:

• Textable?
  ➤ Add tag Textable: Yes

• Not Textable?
  ➤ Add tag Textable: No
  ➤ Enable DND for SMS
  ➤ (Optional) Send email to update phone number

🧠 Smart Uses

• 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

📥 How to Get Started

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 Thoughts

With 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.

To identify and validate mobile numbers from different countries (Australia, UK) within a HighLevel workflow using simple conditional logic, avoiding the need for external validation tools.

✅ Step-by-Step Instructions 1. Understand Country Codes & Mobile Prefixes

• Australia 🇦🇺:

  • All mobile numbers start with 04

  • In international format: +614 (e.g., +614XXXXXXXX)

• United Kingdom 🇬🇧:

  • Common mobile prefixes: 75, 77, 79

  • In international format: +4475, +4477, +4479

2. Set Up Workflow Conditions

• Use the "If/Else" condition in your workflow to check the number format.

Example for Australia:

If phone number contains: +614 Then: Proceed with SMS action Else: Tag as "No SMS"

Example for UK:

If phone number contains: +4475 OR +4477 OR +4479 Then: Proceed with SMS action Else: Tag as "No SMS" 3. Add Tags for Segmentation (Optional)

• Tag contacts that don’t match the mobile prefix rule (e.g., No SMS)

• Later, exclude these tags in campaigns or lists to prevent sending SMS to landlines or invalid numbers

4. Use Cases

• Run this validation when a new contact is added

• Segment your list based on valid SMS recipients

• Avoid failed SMS delivery and unnecessary costs

💡 Pro Tips

• This method avoids third-party mobile validation costs 💸

• Make sure your number formatting is consistent (international format: +CountryCode)

• Customize for other countries by checking local mobile prefix patterns