Our Mission

Most email verification services rely on a single SMTP check and call it a day. The result? False positives, missed catch-all domains, and unreliable scores that cost businesses real money in bounced emails and damaged sender reputation.

We built BounceZero to solve this problem. Our platform uses a comprehensive 5-stage verification pipeline that analyzes every email across 40+ distinct signals, then synthesizes them through a dual Bayesian and machine learning scoring engine.

The result is email intelligence you can trust, with 99.8% accuracy and detailed explanations for every result.

65+

Verification Signals

99.8%

Accuracy Rate

5

Pipeline Stages

200+

Provider Profiles

How We're Different

Our proprietary 5-stage pipeline processes every email through layers of analysis no other service provides.

1

Syntax Analysis

RFC compliance, disposable detection, role-based checks, entropy analysis.

2

Domain Intelligence

MX resolution, SPF/DKIM/DMARC, domain age, provider fingerprinting.

3

SMTP Deep Verification

RCPT TO verification, greylisting retry, catch-all 3-probe detection.

4

Social Signals

Gravatar, breach databases, developer profiles, business email detection.

5

Bayesian + ML Scoring

Likelihood ratios, ML blending, temporal decay, plain-English explanations.

Our Values

The principles that guide everything we build.

Accuracy

Every signal is validated, weighted, and cross-referenced to minimize false positives and negatives.

Privacy

Your data is yours. We never sell email lists and adhere to strict data retention policies.

Transparency

No black boxes. Every score includes a detailed breakdown of contributing signals and reasoning.

Innovation

We continuously evolve our algorithms and push the boundaries of email verification technology.

The Team Behind BounceZero

Built by engineers who care deeply about deliverability, accuracy, and making email work reliably.

AL

Ayoub Lebda

Founder & CEO

Full-stack engineer and email infrastructure specialist. Built BounceZero from scratch - pipeline architecture, ML scoring, SMTP probe network, and all frontend. Based in Morocco, incorporated in the UK (BOUNCEZERO LTD, No. 17153835).

Python / FastAPI ML / Bayesian SMTP Infrastructure

We're Hiring

We're a small, focused team that ships fast. If you care about email deliverability, love working on hard infrastructure problems, or want to build something that genuinely helps businesses reach their audience - we'd like to hear from you.

Say hello

Remote & Independent

BounceZero is a remote-first, bootstrapped company. We don't have VC pressure - we build what our users actually need. Our infrastructure runs 24/7 across OVH, GCP, and our own SMTP probe network.

Morocco UK Ltd Bootstrapped

Our Technology

The engine behind our accuracy, combining statistical modeling, machine learning, and domain expertise.

Bayesian Scoring

Every signal gets a mathematically calculated likelihood ratio. Signals that predict deliverability carry more weight, and prior probabilities update continuously.

Likelihood Ratios Prior Updates Temporal Decay

Machine Learning

ML models trained on real-world outcomes blend with Bayesian scores. Pattern recognition catches subtle indicators rule-based systems miss.

Pattern Recognition Ensemble Blending

Provider Intelligence

200+ behavioral profiles capture how each provider handles SMTP, greylisting, catch-all, and rate limiting for optimal verification strategy.

200+ Profiles Adaptive Strategy

Company & Credentials

Incorporated, Listed & Verified

BounceZero is a registered UK limited company, listed on major software marketplaces, and backed by the world's leading cloud and AI infrastructure programs.

UK Limited Company ✓ Incorporated

BOUNCEZERO LTD - Company No. 17153835, registered in England & Wales. Incorporated April 2026.

G2 Software Reviews ✓ Listed

Verified vendor profile on G2 - the world's largest B2B software review platform. Categories: Email Verification & Email Deliverability.

AWS Activate ✓ Accepted

Accepted into AWS Activate Founders program - Amazon's startup support program for high-growth cloud companies building on AWS infrastructure.

Google for Startups Application Submitted

Applied to the Google for Startups Cloud program - Google's initiative supporting high-growth startups building on GCP infrastructure.

NVIDIA Inception Program Member

Selected member of NVIDIA Inception - the AI startup accelerator for companies building with ML and deep learning.

CSA STAR Level 1 ✓ Listed

Cloud Security Alliance STAR self-assessment - 261 controls across 17 security domains. View registry entry

Google Postmaster Tools ✓ All Green

All 8 sender compliance checks passing: domain reputation, SPF, DKIM, DMARC, spam rate, and delivery errors.

Microsoft SNDS ✓ Registered

All 6 SMTP probe IPs registered with Microsoft Smart Network Data Services. Clean reputation across Outlook and Hotmail.

Gartner Peer Insights Not Yet Listed

Submitted to Gartner Peer Insights in the Email Optimization category. Listing requires a minimum number of verified customer reviews.

Ready to Get Started?

Experience the difference true email intelligence makes. Start verifying with 99.8% accuracy today.

Start For Free Contact Us

[email protected]

+1 (515) 368-9959