Free WhatsApp & SMS Tools
Practical tools for ecommerce teams - built on the same engine Zefir uses to verify, send and convert for 300+ brands.
Browse the tools
Start with a single check, then scale to your entire list when you are ready.
WhatsApp & SMS ROI Calculator
Model the revenue, cost and ROI of a campaign before you spend a single credit on sending.
SMS Cost & Segment Calculator
See how many segments your message uses and exactly what it costs per country.
WhatsApp Click-to-Chat Link & QR Generator
Create a wa.me link and QR code with a pre-filled message — no code, no app install.
Abandoned Cart Recovery Calculator
Estimate the revenue you can win back from abandoned carts with WhatsApp and SMS flows.
WhatsApp Template Message Builder
Draft and preview Meta-compliant template messages before you submit them for approval.
Why teams use these tools
Every tool here runs on the same infrastructure behind Zefir's platform - not a simplified demo.
Free and instant
No signup, no credit card, no waiting. Run a check and get an answer in seconds.
Built on the real engine
The same validation and delivery stack Zefir uses in production for ecommerce brands.
Scales to your whole list
When a single check is not enough, the same engine verifies millions of numbers in minutes.
Need to run this at scale?
Zefir verifies entire lists, then turns them into WhatsApp and SMS revenue - run for you, end to end.
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