> For the complete documentation index, see [llms.txt](https://docs.wawf.app/wa-workflow/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.wawf.app/wa-workflow/features/openapi-1.md).

# Feature Guide: WhatsApp Number Validator

Welcome to **WA Work Flow!**\
We’re excited to introduce one of our most **powerful and time-saving tools — the WhatsApp Number Validator.**

This new feature allows you to **check whether a phone number is valid and available on WhatsApp** before you send a broadcast message. It ensures your campaigns are **more accurate, efficient, and cost-effective.**

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### <mark style="color:green;">🔧 Step-by-Step Guide</mark>

#### **Step 1:**

Open the **WA Work Flow Extension.**

#### **Step 2:**

Go to the **Advanced Feature** section.\
A pop-up window will appear.

#### **Step 3:**

Click on **WhatsApp Number Validator** from the pop-up menu.

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#### **Step 4:**

You’ll now see an option to **upload an Excel file** containing the phone numbers you want to validate.

Right below that, you’ll also find a link labeled **“Excel (sample)”** —\
click it to **download a sample format**.\
This sample will help you correctly organize your numbers for validation.

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#### **Step 5:**

After preparing your Excel file, **upload it** into the validator.\
Then click on **“Validate & Download.”**\
The system will begin processing and verifying your numbers.

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### <mark style="color:green;">📊 After Validation</mark>

Once the validation is complete, your **report file will be downloaded automatically.**\
This report will clearly show:\
✅ Valid numbers available on WhatsApp\
❌ Invalid or inactive numbers

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### <mark style="color:green;">⚙️ Performance Tip</mark>

To get the **best speed and accuracy:**

* Validate **small batches of 400–500 numbers** for faster results (within minutes).
* If you upload **1,000–3,000 numbers**, processing may take **1–3 hours**, depending on system load and network speed.

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### <mark style="color:green;">💡 Benefits of Using WhatsApp Number Validator</mark>

* **Save Time:** Avoid sending messages to inactive or invalid numbers.
* **Save Cost:** Reduce wasted message credits on unreachable users.
* **Improve Accuracy:** Ensure all messages reach genuine WhatsApp users.
* **Boost Performance:** Clean your contact list before broadcasting.

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### <mark style="color:green;">🎬 Video Tutorial</mark>

Watch our detailed video tutorial on how to use this feature.<br>

{% embed url="<https://youtu.be/E1LaYRg-LI0?si=IJzp6A2VrjUqXDw->" %}

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