“Cheapest” depends on your existing contract and delivery performance. Use the all-in amount you pay per successfully delivered SMS verification—not a headline SMS transport rate.
🇺🇸
United States
SaaS, fintech, marketplaces, and consumer apps verifying US users
70% savings break-even
$0.0220per SMS verification
If your current all-in SMS cost is at or above this amount, the displayed Wevlix rate is at least 70% lower at 10,000 monthly verifications.
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United Kingdom
UK platforms replacing high-cost SMS verification and 2FA
70% savings break-even
$0.0877per SMS verification
If your current all-in SMS cost is at or above this amount, the displayed Wevlix rate is at least 70% lower at 10,000 monthly verifications.
Formula: savings = (current SMS cost − Wevlix delivered OTP cost) ÷ current SMS cost. Include verification fees, carrier charges, failed-attempt billing, monthly platform fees, and fraud losses in your current SMS baseline.
Beyond the unit price
Lower the cost per verified user.
A cheap send is not cheap when it fails, attracts fraud, or adds another platform fee.
Pay for delivery, not attempts
Your wallet is charged after delivery is confirmed. Failed and undelivered OTP messages do not become wasted verification spend.
Control OTP pumping
Rate limits by phone number, IP address, and number prefix help reduce automated abuse before it drains your budget.
Keep the integration focused
Send, verify, and check status through a compact server-side API without adopting a full multichannel communications stack.
Use Meta's official Cloud API
Authentication templates travel through the official WhatsApp Business Platform with delivery events and message logs.
Migration plan
Validate savings before switching everything.
Start with one authentication flow, one market, and a measurable success target.
1
Measure your real SMS baseline
Divide total verification spend by successful deliveries. Include provider fees, carrier charges, failed attempts, and fraud.
2
Pilot WhatsApp with a fallback
Route eligible US and UK users to WhatsApp first while preserving SMS or another recovery channel for exceptions.
3
Compare verified-user economics
Measure delivery, completion, support burden, fraud, and cost per successful verification before moving more traffic.
Pricing
Pay only for what you deliver.
Transparent per-message rates. Not plans, not subscriptions, just honest pricing.
See your exact price before you send
Message type
1,000messages
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Select your destination or region above to calculate your exact price.
Pay only for delivered messages. Failed sends are free.
Is Wevlix always the cheapest WhatsApp OTP provider?+
No provider is cheapest for every destination, volume, contract, and traffic pattern. Wevlix publishes its destination-based price, has no monthly minimum, and charges only for delivered messages so you can compare your real cost before migrating.
How is the 70% SMS cost reduction calculated?+
Use your current all-in SMS verification cost per successful delivery as the baseline. At 10,000 monthly verifications, a 70% reduction is possible when that baseline is at least about $0.0220 in the US or $0.0877 in the UK, based on the Wevlix rates shown on this page. Your actual savings depend on your current provider, contract, delivery rate, and volume.
Can WhatsApp OTP completely replace SMS verification?+
WhatsApp can be the primary verification channel for users who have WhatsApp. Keep a fallback such as SMS, email, passkeys, or recovery codes for users who cannot receive WhatsApp messages.
Do failed WhatsApp OTP messages cost money?+
Wevlix bills on confirmed delivery. Failed or undelivered messages do not deduct from your wallet, which makes cost per delivered verification easier to forecast.
Are US and UK WhatsApp authentication rates fixed?+
No. Meta can update destination and message-category rates. The live calculator on this page is the current source of truth before you send.
Bring your SMS bill. We’ll calculate the real difference.
Get a US or UK cost model, a small pilot plan, and direct migration help from an engineer.