Verification API
Prelude
Paris-based phone and email verification API that routes one-time codes across SMS, RCS, WhatsApp, Telegram and Viber, with built-in fraud screening.
A specialist for one-time codes, built against SMS pumping and with retries handled for you.
The Verify API handles the whole cycle, from sending and retrying to checking the code, and screens each request with a risk model aimed at SMS pumping and IRSF fraud. A separate Notify API sends transactional and marketing messages over SMS, RCS and WhatsApp. Worth a look when verification cost and fraud are the problem and you want a narrow tool rather than a full CPaaS.
Where it shines
- Fraud screening on every verification, tunable per country
- Retries and channel choice handled by the API
Check before signing
- A young company: check support terms and coverage for your own markets
- Telegram and Viber are for verification only; Notify covers SMS, RCS and WhatsApp
- The pricing model has changed over time; confirm the current per-verification terms
What it offers
- Solves
- Secure logins & one-time codesTransactional notifications & alerts
- Channels
- SMSRCSWhatsAppTelegramViber
- Industries
- Any industry
- Markets
- Global
- Languages
- English
- Security and privacy attestations
- ISO/IEC 27001SOC 2 reportEach one cites its source below.
Technical details
- Type of solution
- Verification & OTPSMS & A2P messagingWhatsApp Business provider
- Deployment
- Programmable API
- Company size
- Small businessMid-sized companyEnterprise
- Pricing
- Published pay-as-you-go
Something is listed only when it can be checked. A connection we could not confirm is left off, and Find providers then credits the API at half weight.
Our six checks
- Operational transparencyNot assessed
Not yet worked through.
- Documented interfacesMet
Public API reference, integrable without a sales call.
- Delivery accountabilityNot assessed
Not yet worked through.
- Consent and complianceNot assessed
Not yet worked through.
- Data handlingNot assessed
Not yet worked through.
- Commercial clarityMet
List pricing published.
Not assessed is not a failure — it means we have not checked yet. Methodology
Evidence
Sources
- Verify API — Prelude Docs
- Notify API introduction — Prelude Docs
- Prevent fraud — Prelude Docs
- Pricing — Prelude
- Paris-based Prelude raises €17.2 million Series A — BeBeez, 2026-05
- Prelude (home page compliance badges) — Prelude, 2026-10To re-check
- Prelude is now SOC 2 Type II compliant — Prelude, 2026-10To re-check
Every attribute
The same attributes, measured by the same rules, for every listing. "Not recorded" means we have not checked yet — never a "no". Spot something missing or wrong? Suggest an edit.
What it does
Where, and for whom
Setup and connections
The company
- Same owner as cpaas.co
- No
Our checks
The community
- "Looks right" confirmations
- 0
- Community reviews
- 0
- Community rating
- Not applicable
Experiences and ratings
Share your experienceNo experiences with Prelude yet. Used it? Yours could be the first.
Reviews are read by a moderator before they appear, are shown beside the facts, and never feed a score or a ranking. You may not review a product you work for, sell, compete with or are paid to promote.
Profile shape
- Channels
- 63
- Reach
- 100
- Connectors
- 17
- Deployment
- 33
- Price clarity
- 100
- Criteria shown
- 33
Breadth measures from recorded facts — not a quality score.
Alternatives