Most popular WhatsApp OTP
WhatsApp OTP verification runs over WhatsApp Business rather than the mobile network, so the rate is the same in every country instead of following operator pricing. The flow differs from the other channels in one way: the user opens a link to start the chat, and the code comes back to them there.
You never name a channel on a send: routing picks it from the recipient and your channel order. See Channels & routing for how that decision is made.
When to Use WhatsApp OTP
Where it fits
- One flat rate worldwide, so a global user base carries no per-country surprises
- High open rates on a surface users already have in the foreground
- The inbound and outbound messages that carry one code count as a single verification
Worth knowing
- Only ever a first channel: because the user has to open the link to start the chat, a resend cannot advance into WhatsApp, and it is skipped if it sits further down your order
- It asks one extra action of the user, so it suits flows where you can show a button
WhatsApp OTP Pricing
$0.0012 per verification sent, the same in every country, because the code travels over the internet rather than a mobile operator's network. One charge per code, whatever the user does next.
Compare every channel and country, and estimate a monthly cost, on the pricing page.
WhatsApp OTP in the Docs
The reference behind this page, for when you are ready to integrate.
The Other Channels
The same two API calls cover all four, so you can put more than one in your order and let routing pick.
Ship verification
with one prompt.
$3 free credits. No credit card. No sales call.
Your first OTP in 10 minutes.
