Free tools
Six free tools. No sign-up required.
Useful things we built while building Zonnex. All free, all work in-browser, none require an account.
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API cost calculator
Estimate your monthly WhatsApp cost before signing up. Message rates + plan fee, all in.
Template rejection checker
Paste your template and find out why Meta might reject it — before you submit.
WhatsApp link generator
Generate a wa.me link with a pre-filled message. For websites, email, and bio links.
QR code generator
QR code that opens a WhatsApp chat with your number and message.
Message preview tool
See exactly how your template message will look in WhatsApp before submitting.
Broadcast cost calculator
How much will a campaign to 5,000 contacts cost? Marketing vs utility — see the difference.
Zonnex runs this check automatically before you submit.
Try it free — no card, connect in three minutes.
14 days free · No card needed · Cancel anytime