WhatsApp API: Verify & Notify

Login codes instead of SMS, order updates and reminders from your website.

Send verification codes on WhatsApp instead of SMSSet up WhatsApp codes (OTP) for your website's sign-up and login in about five minutes, and try one on your own phone.5 min read
Send and check a WhatsApp code from your website (API)The two calls your server makes: send a code to a number, then check the code the person typed.6 min read
Send order updates and scheduled reminders from your websiteSend an approved WhatsApp template the moment something happens on your site, or at a time you choose.5 min read
Get delivery and read updates on your serverLet Chatmizer call your server when a message is sent, delivered, read or fails — and check that the call is genuine.4 min read
Keys, limits and keeping codes safeWhat protects your customers and your WhatsApp bill, and the settings you can change.4 min read
Use WhatsApp codes for login, sign-up and password resetWhere the code fits in each journey, and the small details that make it safe and pleasant.5 min read
WooCommerce and WordPress: order messages and login codesNo-code order updates through Automations, or a few lines of PHP for messages and login codes.6 min read
Zapier, Make and n8n: WhatsApp messages without codeSend a WhatsApp template from any app these tools connect — a form, a calendar, a spreadsheet, a CRM.4 min read

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