Verify which phone numbers on your list have WhatsApp

Checks every phone number in a spreadsheet against WhatsApp and records the result automatically.

How the work actually flows

It repeats. Repeats rate limit hit; runs once per each phone number in list; it retries when a step fails.

Pattern: Structured Loop (21) ยท Multiple Instances with a priori Run-Time Knowledge (14)

flowchart TD trig(["scheduled or manual list check"]):::trigtime s0[("Read phone numbers")]:::store s1[["Check number via lookup service"]]:::mi s2["Wait and retry check"]:::task s3["Write results to sheet"]:::task trig --> s0 s0 -->|"one per each phone number in list"| s1 s1 --> s2 lp{"check succeeds or retries exhausted"}:::gate s2 --> lp lp -. "rate limit hit" .-> s1 lp -->|"finished"| s3 out[/"phone list marked valid or invalid"/]:::out pay{{"clean verified list before campaign"}}:::pay s3 --> out out --> pay s2 -. "retries on failure" .-> s2 classDef task fill:#e7f6fe,stroke:#34b8f0,color:#2c2a29 classDef svc fill:#f6f8fa,stroke:#7c8795,color:#2c2a29 classDef mi fill:#e7f6fe,stroke:#0079a8,color:#2c2a29,stroke-width:2px classDef human fill:#fff,stroke:#0079a8,color:#0079a8 classDef store fill:#f6f8fa,stroke:#0079a8,color:#2c2a29 classDef trig fill:#00a4eb,stroke:#0079a8,color:#fff,font-weight:bold classDef trigtime fill:#00a4eb,stroke:#0079a8,color:#fff,font-weight:bold classDef trigdata fill:#8ad4f5,stroke:#0079a8,color:#06314c,font-weight:bold classDef gate fill:#fff,stroke:#e8a23d,color:#6b4708,font-weight:bold classDef out fill:#1f9d6b,stroke:#167a53,color:#fff,font-weight:bold classDef pay fill:#06314c,stroke:#021f33,color:#fff
Starts itA stepRuns once per itemA record or sheetRepeat or finishResultPayoff
Build size
Standard

A mid-size build with several tools working together.

Business functions
Messaging & NotificationsSpreadsheet & Database Ops
Connects
Google SheetsRapidAPI

The problem it solves

You have a list of phone numbers and no easy way to tell which ones are real, active WhatsApp accounts before you spend time reaching out. Checking each number by hand is slow and easy to get wrong.

Who it fits

A sales or outreach team that needs to clean a phone number list before running a WhatsApp campaign.

How it works

  1. A schedule or manual start reads phone numbers from a Google Sheet
  2. Each number is checked against a WhatsApp lookup service
  3. The system automatically retries numbers that hit a rate limit
  4. Results like validity, business status, and profile details are written back to the sheet
What you get

Verified WhatsApp numbers ready for outreach

Every phone number on your list gets checked against WhatsApp, so your outreach team knows which contacts are reachable there.

What you get

A spreadsheet with each phone number marked valid or invalid, plus WhatsApp profile details where available.

What you need

A Google Workspace account and a RapidAPI subscription for WhatsApp lookups.

We can build this. But should you?

The hard question is not how to build it. It is whether this is the right thing to build first.

That is what a Fractional Chief AI Officer figures out with you, before anyone writes a line of code.

Let's Talk Strategy

Related automations

Run a full SEO checkup on any website and log it to Google Sheets

Enter a website address and get traffic, authority, backlink, and competitor data logged automatically to a spreadsheet.

Standard

Turn YouTube clips into cloned AI voices automatically

Pulls audio from a list of YouTube videos and submits it to ElevenLabs to create a cloned voice for each one.

Standard

Track competitor SEO keywords in Google Sheets automatically

Submit a website and country, and keyword data on your competitors lands straight in Google Sheets.

Standard

Score submitted content for readability and log it in Google Sheets

Automatically checks submitted text for readability and saves the score to a spreadsheet, then emails the results.

Standard
Back to the AI Playbook