Exellius: B2B Lead Generation & Email Verification SaaS Platform

A full-stack B2B data intelligence SaaS platform with 77.7M+ verified leads, email finder, bulk email verification, API access, subscription billing, and a real-time leads dashboard built for sales teams worldwide.

Client: ExelliusVisit Live Web App

Exellius: B2B Lead Generation & Email Verification SaaS Platform

77.7M+

B2B Records

98%

Email Accuracy

100M+

Verified Contacts

4-Tier

Billing Plans

The Problem & Challenge

Sales and marketing teams wasted hours manually sourcing, verifying, and managing B2B contact data across fragmented tools with poor data accuracy and no unified workflow.

Our Solution & Engineering

Built a full-stack B2B SaaS data platform with an AI-powered leads finder, real-time email verifier, bulk export, Stripe subscription billing, and a developer-friendly REST API — all backed by a database of 77.7M+ verified global contacts.

Key Technical Results Delivered

77.7M+ verified B2B contact records indexed and searchable

Email verification accuracy at 98%+ with GDPR compliance

4-tier Stripe subscription model (Free, Basic $59, Growth $119, Professional $199/mo)

REST API with OAuth 2.0 enabling programmatic lead access at scale

Used by global enterprises including NTT Data, Genesys, and AdRoll

Technologies & Architecture

Next.js 14Node.js / FastifyPostgreSQLStripe BillingRedis CacheREST APIOAuth 2.0GDPR Compliance

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