# Knowledge Bank — Prelude **Role:** BDR English Speaking | **Date:** June 4, 2026 --- ## WHAT PRELUDE IS **One sentence:** "Prelude is redefining how companies authenticate and onboard users — turning what's traditionally a cost center into a growth lever." **Simple analogy:** "Stripe for phone verification / OTP routing." **Trust layer framing:** Prelude unifies device, network, and enrollment signals into one onboarding decision. The question is no longer "is this number valid?" — it is "is this user legitimate across all access points?" **Founded:** 2022, Paris. By Matias Berny + Quentin Le Bras (ex-Zenly). 60 people. $27M raised. 6× revenue growth in one year. --- ## THE MARKET PROBLEM - **~30%** of SMS traffic is fraudulent pumping (fraudsters trigger OTP sends to numbers they control to earn carrier revenue) - **>40%** of new online accounts are fake - Legacy providers (Twilio, Sinch, Vonage) add margins without optimizing deliverability - Signal Foundation spends **$6M/year** just on SMS — more than its entire infrastructure - **New threat (Series A):** AI agents can now impersonate humans at scale. CAPTCHAs are solved in milliseconds. Prelude is building the trust layer for the AI internet. --- ## THE 5 PRODUCTS ### VERIFY — Core product / wedge OTP orchestration engine. Developer calls 2 API endpoints. Prelude handles everything else. - Routes to best provider among **30+** (Sinch, Telesign, Vonage, Bird...) - **5 channels:** SMS, WhatsApp, Viber, Zalo, Voice — best channel per country automatically - **4-layer fraud protection:** Heuristics → AI Model → Database → Cooperation (shared signals) - Real-time analytics: conversion rate, cost per OTP, attempts per check - Business arbitrage: choose cost vs conversion optimization target - Pricing: pay per **successful verification** — not per SMS sent - **Metrics:** −60% costs / 95% conversion / 99% fraud blocked / 230+ regions - **Pitch:** "OTP orchestration — best provider, best price, automatically. 30+ providers, 230 regions, 4-layer fraud. Stripe for phone verification." **Client quotes:** - BeReal: *"Risk-wise, business-wise, cost-wise: start with Prelude if you need SMS sending"* - Bitstack: *"Optimal combination of delivery success and cost-efficiency, which is crucial"* --- ### AUTH — Full auth stack (launched Series A May 2026) - SMS OTP, Email OTP, SSO SAML, biometrics, step-up security on critical actions - Bot and agent detection before authentication (network fingerprint) - Full flow in **under 15 lines of code** — Clean REST, standard JWTs - Migration of existing users **without re-authentication** - SDK: iOS, Android, React Native - **Pitch:** "Full auth stack with built-in fraud detection from day one. Under 15 lines of code." --- ### WATCH — Pre-KYC fraud scoring - Analyzes **50+ device signals** passively via mobile SDK — zero user friction - Blocks residential proxies, disposable numbers, synthetic accounts - Real-time risk score at every funnel stage — before KYC or SMS - **90% of bots blocked** - **Pitch:** "Real-time fraud scoring before KYC. 50+ device signals analyzed passively — fake accounts never reach verification." --- ### INTEL — Telco data intelligence (launched Series A May 2026) Direct carrier data — no brokers, no aggregators. Results in **<1 second. 40+ markets.** Carriers: Orange, Telefónica, Deutsche Telekom + 40 more. **5 APIs:** - **Lookup** — Is this number active? Mobile or VoIP? Recently ported? - **SIM Swap** — Was this SIM recently changed? (strongest account takeover signal) - **KYC Match** — Name, address, DOB match carrier records? Detects synthetic identities. - **KYC Tenure** — How long has this number been held? Guards against recycled numbers. - **Home Verify** — Verified address from carrier registration. Replaces document uploads. **Use cases:** Block payments if SIM changed in 48h (fintech) / Skip document upload (BNPL) / Prove residency (gambling) **Pitch:** "Telco data straight from carriers: SIM Swap, KYC Match, portability — under one second. Replaces document uploads." --- ### NOTIFY — Transactional messaging - **5 channels:** SMS / WhatsApp / Viber / Zalo / RCS — right channel per country automatically - **99.99%** deliverability / **−30%** cost vs previous setup / **98%** SMS open rate - 1 endpoint / 1000+ routes / automatic fallback / direct carrier access - **Pitch:** "Multi-channel transactional messaging. 99.99% deliverability, −30% costs, 1 endpoint." --- ## PRODUCT COMPLEMENTARITY ``` Verify → Watch → Auth → Intel → Notify ``` Verify is the wedge (any app with auth is a target). Then the platform expands — Watch protects before OTP, Auth replaces the entire auth stack, Intel enriches decisions with carrier data, Notify handles all messaging. Each product strengthens the others and justifies going higher in the account. **Trajectory:** cost center → performance layer → trust infrastructure --- ## FOUNDERS & ORIGIN **Matias Berny (CEO):** Spent 3 years at Zenly almost entirely on SMS verification. *"It's really the Skyscanner of phone number verification. We find the best route at any moment."* / *"The old model is broken. CAPTCHAs no longer stop bots."* **Quentin Le Bras (Co-founder):** Also ex-Zenly. *"The question is no longer 'is this number valid?' but 'is this user legitimate across all access points?'"* **Origin:** At Zenly, ~30% of SMS traffic was fraudulent pumping. Signal Foundation spends $6M/year on SMS alone. They left Zenly and built for everyone what they'd had to build for themselves. Founded 2022, Paris. --- ## FUNDING & TRACTION | Round | Date | Amount | Lead | |---|---|---|---| | Seed | Nov 2024 | $8M | Singular + Seedcamp | | Series A | May 2026 | $20M | 20VC (Harry Stebbings) + Singular, Seedcamp, Deel, FDJ UNITED | | **Total** | | **$27M** | | - Revenue: **6× in one year** / Customer base: **6×** / Accounts verified: **100M** / Requests analyzed: **205M** - Finfrog case study: **−45% costs** --- ## KEY CLIENTS BeReal (Consumer) / Locket (Consumer) / Sunday (Fintech) / Bitstack (Crypto) / Alma (BNPL) / Suno (AI) / Voodoo (Gaming) / Finfrog (Fintech, −45% costs) --- ## COMPETITORS - **Twilio = main competitor** (Prelude has a dedicated "Twilio Alternative" page on site) - Also: Sinch, Vonage, Bird (SMS providers) - **Key difference:** They are vendors. Prelude is an orchestration layer on top — routing intelligence + fraud protection + analytics + full auth stack. - **Differentiators vs Twilio:** Cost (no markup on SMS) / Simplicity / Native fraud protection / Analytics --- ## COMPANY & CULTURE 60 people · Paris · Flat org · 4 days office / 1 day remote · 4 weeks full remote/year · US expansion underway Certifications: SOC 2 Type II / ISO 27001 / GDPR-ready / GSMA member **3 values (know by heart):** - **Care** — Deep care for customers, teammates, quality of what we ship - **Bias for Action** — Move fast, test in real world, iterate — not over-optimize in theory - **Ownership** — End-to-end responsibility from identifying problems to delivering outcomes --- ## CHARLOTTE INTEL (AE call — June 1, 2026) *Maxime booked a product demo proactively before the RH screen. Charlotte is an AE.* **Buying triggers ranked:** 1. **COST** — this is what opens conversations (not fraud, not conversion) 2. Fraud (SMS pumping, fake accounts) — second 3. SMS is the wedge. Platform is the ambition. **Target buyer personas:** - CTO (tech decisions, integration simplicity) - Head of Fraud (blocking bad actors, KYC costs) - **Head of Product** (owns onboarding journey, cares about conversion and UX) **Sales motion:** Discovery → Demo → POC → Contract - Pay-as-you-go available (lowers barrier) - **Very outbound-heavy** — little inbound - BDR role includes independently closing smaller deals **Common objections:** Existing contracts / Satisfied with current provider / Budget not priority **Priority verticals (Charlotte confirmed):** Fintech + Dating apps **Commercial org:** Ramp-up phase / Less than 1 SDR per AE / AEs also do outbound **Charlotte's advice:** Highlight technical affinity (middleware) / Study the docs / Case study may be multi-product now (confirm with Lauren) / They recruit "smart, grounded people" --- ## THE BDR ROLE **Comp:** €57K base + uncapped commission | Hybrid: 4d office / 1d remote **What you'll do:** - Generate new sales opportunities (cold call, cold email, experiment with channels) - Identify targets in verticals/territories - Qualify leads and pitch value proposition - **Close smaller deals independently** — beyond pure pipe gen - Improve processes as business scales **Target buyers:** Procurement managers / Lead engineers / Head of Anti-Fraud / Head of Product / CTO / CPO / CEO **Profile they want:** Previous BDR/Sales exp / Proactive & relentless / HubSpot + Sales Navigator + Apollo + Phantombuster + Kaspr / Self-directed + resourceful / Curious + coachable / English fluency on technical product **Interview process:** Recruiter (today) → Sales team call → **Case study** → CEO (Matias Berny) --- ## OBJECTION HANDLING **"We're on Twilio."** Most of our clients were too. They typically save 30-40% on verification costs — before the fraud reduction kicks in. Worth a quick comparison? **"We're happy with current provider."** When you say happy — deliverability, cost, or both? What we often see: people are satisfied until they look at how much SMS traffic is actually fraudulent pumping. **"Not the right time."** Understood. When would be better? I want to follow up at the right moment. **"Send me an email."** Of course. Before I do — is the priority cost reduction or the fraud side? **"Not interested."** Fair enough. One question: how much of your monthly SMS traffic do you estimate is fraudulent pumping? We can usually show that in under 15 minutes. **"We handle fraud internally."** What signals are you using? Most clients found device-level signals were the missing piece — things you can't see from the number alone. **"We built our own solution."** How long did that take? And are you connected to multiple providers? Our value usually shows up when companies try to optimize across providers — that's the hard part to build in-house. --- ## ALL KEY NUMBERS | Metric | Value | |---|---| | Cost reduction (Verify) | −60% | | Verification success rate | 95% | | Fraud blocked | 99% | | Bots blocked (Watch) | 90% | | Regions | 230+ | | Providers | 30+ | | API endpoints (Verify) | 2 | | Auth flow (lines of code) | <15 | | Intel response time | <1 second | | Intel markets | 40+ | | Notify deliverability | 99.99% | | Notify cost reduction | −30% | | SMS open rate | 98% | | Fake accounts online | >40% | | Fraudulent SMS traffic | ~30% | | Signal Foundation SMS spend | $6M/year | | Revenue growth YoY | 6× | | Total raised | $27M | | Team | 60 people | | Founded | 2022 | | Finfrog cost reduction | −45% | --- ## QUESTIONS TO ASK LAUREN *Ask 3-4 max. Space them naturally throughout the call — not all at the end.* **On the role:** - "From your perspective, what separates the BDRs who ramp fast from those who struggle in the first 90 days?" - "Charlotte mentioned the case study has evolved since the Series A — is it now covering multiple products, or still focused on one?" - "How is the BDR territory structured — by language, geography, or vertical?" - "What does the relationship between BDR and AE look like day-to-day? Is it one-to-one, or more shared?" **On the company:** - "You just closed a $20M Series A and launched two new products. How does that change what the sales team is expected to do in the next 6 months?" - "What is the ICP that's converting best right now — fintech, dating apps, or something else?" **On the process:** - "What are the next steps after today, and what should I prepare for the case study?" *[Best closer: "What would make you excited about a candidate after this call?" — direct, shows confidence, gives you useful information.]* --- ## BEFORE / AFTER PRELUDE | Before Prelude | With Prelude | |---|---| | Manual SMS provider choice + DIY fraud rules | Auto-routing to best provider at best price | | Pay per SMS sent — even failed ones | Pay per **successful verification** only | | Opaque costs, hidden provider margins | Full analytics: cost / conversion / fraud by country | | Fraud undetected before KYC | 4 protection layers + 50+ device signals | | One channel fits all | Best channel per country automatically | | Weeks of integration, regulatory registration | Pre-registered globally, 1 sprint to implement | **The pitch in one sentence:** "Instead of being locked into one provider and paying for every SMS whether it works or not, Prelude automatically routes to the best provider, blocks fraud before it happens, and you only pay when the verification actually succeeds." --- ## SALES ANGLES BY VERTICAL ### Fintech / BNPL **Pain:** Signup fraud inflates KYC costs. SMS pumping adds 30%+ to telecom bills. Compliance demands identity verification. **Open with:** "How much of your monthly SMS verification spend do you estimate is going to fraudulent traffic?" **Entry product:** Verify (cost reduction) **Expand to:** Watch (pre-KYC fraud) → Intel SIM Swap (block payments on recent SIM changes) → Intel KYC Match (replace document upload) ### Dating apps **Pain:** Massive fake account creation destroys user experience. SMS costs are enormous at scale. **Open with:** "What percentage of new signups do you estimate are bots or fake profiles today?" **Entry product:** Verify (conversion + cost) **Expand to:** Watch (block fake profiles before they reach the app) ### AI companies (new market — Series A) **Pain:** AI agents can now create accounts at scale. Traditional verification is insufficient. **Open with:** "CAPTCHAs are solved by AI in milliseconds now — how are you protecting your signup flow?" **Entry product:** Watch (device signals + network fingerprinting catch AI agents) **Expand to:** Auth (continuous trust beyond the first verification) ### Gaming / Mobile **Pain:** Bonus abuse, multi-accounting, referral fraud. **Open with:** "Are you seeing multi-account fraud in your referral or bonus programs?" **Entry product:** Watch + Verify **Expand to:** Intel KYC Tenure (is this number held long enough to be legitimate?) --- ## GLOSSARY (key terms to know) | Term | What it means | |---|---| | **OTP** | One-Time Password — the 6-digit code sent by SMS to verify a phone number | | **SMS Pumping** | Fraudsters trigger OTP sends to numbers they control to earn carrier revenue. Costs companies 30%+ of their SMS budget. | | **SMS Pumping Fraud** | Also called "Artificially Inflated Traffic" (AIT) — the #1 problem Verify solves | | **KYC** | Know Your Customer — identity verification process required by regulations (especially fintech, banking) | | **BNPL** | Buy Now Pay Later — fintech companies like Alma or Klarna offering deferred payment | | **CPaaS** | Communications Platform as a Service — what Twilio, Sinch, Vonage are. Prelude is NOT a CPaaS — it orchestrates on top of them. | | **SIM Swap** | Fraud technique: attacker transfers a victim's number to a new SIM they control, then intercepts OTPs | | **Step-up auth** | Adding an extra verification step (biometrics, OTP) when a user attempts a high-risk action | | **POC** | Proof of Concept — a test deployment to prove Prelude's value before full contract | | **ICP** | Ideal Customer Profile — the type of company most likely to buy | | **SQO** | Sales Qualified Opportunity — a lead that meets criteria to become a real pipeline opportunity | | **DPoP** | Demonstration of Proof of Possession (RFC 9449) — a security standard Auth uses to bind tokens to clients | | **PKCE** | Proof Key for Code Exchange — OAuth security extension that Auth implements | | **Telco intelligence** | Data from mobile carriers (operators) used to verify identities — the foundation of Intel | | **Fallback** | If one provider fails, Prelude automatically routes to the next best one. Zero downtime. | | **Pay-as-you-go** | Prelude pricing model — pay per successful verification, no commitment, no minimum | --- ## WHAT TO CONFIRM WITH LAUREN - **Case study format:** Is it one product or multi-product? Charlotte wasn't sure — it may have changed since Auth and Intel launched. - **Territory:** Is the BDR role segmented by language, region, or vertical? - **Ratio:** How many BDRs per AE currently? - **Tools:** What CRM and sequencing tools does the team use? (Salesforce? Outreach? HubSpot?) - **Timeline:** What is the expected timeline to make a decision?