Own Business Address Verifier API.

What you'd own.

Every artifact below transfers to your accounts on day one. The whole engine.

• ●FastAPI backend with address verification and residential IP detection logic
• ●Landing page with email signup, Stripe billing integration, and portal
• ●Cold email templates and RevOps LinkedIn outreach list and playbook
• ●Pricing model, CAC research, and retention strategy documentation
• ●Smarty Streets and USPS integration code with API credentials
• ●Customer list with existing trial and paying subscriber contact data
• ●API documentation, SDK code samples, and customer success templates

What Roll Digital builds for you.

Custom scope to take Business Address Verifier API from MVP shell to operating business.

• ▸Production PostgreSQL database with customer profiles and verification results schemas
• ▸Stripe billing with three usage-based pricing tiers and invoicing
• ▸Multi-tenant auth with email sign-up and Google OAuth integration
• ▸API rate limiting and key management for paying customer accounts
• ▸Batch processing pipeline and async result delivery via webhooks
• ▸Admin portal for customer management, billing oversight, and data health
• ▸API documentation and SDK code samples for RevOps sales conversations
• ▸Production logging, error tracking, and database backup automation systems

Why this could work.

The TAM is real and the customer profile is sharp: 25,000 US B2B SaaS companies actively buying address data tools at $560 yearly. Cold outreach to RevOps teams is a proven playbook. If you can keep customers on the platform beyond their first list cleaning cycle, margins are strong. The residential IP angle gives you a legitimate reason to claim superiority over free alternatives.

What you'd risk.

The core risk is structural: most address cleaning is one-time batch work, not recurring. Buyers upload a CSV, get results, and churn. Data decay forces you to license fresh data constantly, compressing margins as volume scales. Differentiation on residential IP accuracy is easy to dismiss as a feature, not a product. Free alternatives exist. The 16% success rate and negative Year 1 margin reflect real competitive and product-market barriers, not just execution risk.

Who this fits.

Best fit: An experienced RevOps operator or sales operations consultant with existing relationships at 50-300 person B2B SaaS companies. You need real cold outreach experience, comfort running API-first products, and discipline with unit economics and retention. A solo founder with seven-plus years of SaaS sales could work. Not for generalist marketers or product people without direct customer distribution channels.

Timeline.

From contract signing to operating business.

1. Day 1
   Legal entity transfer, source code access, customer database handoff
2. Week 1
   Notify existing trial users and early customers of ownership change
3. Week 3
   Complete API testing against production data, verify integrations working
4. Week 6
   Billing migration to your Stripe account, email sign-up system live
5. Day 90
   30-day customer success window complete, assess retention and churn rate

Pricing.

Three ways in, depending on how much you want to build yourself.