Email Marketing
Retail Email Re-Platform
Grew monthly email revenue 3.2x in 90 days by rebuilding segmentation and lifecycle flows.
Growth Marketing & Software Studio
Marketing That Converts.
Software That Scales.
We grow brands through performance-driven email & affiliate marketing — then build the mobile, backend, and cloud software products that power them. One team, two disciplines, zero handoff friction.
What We Do
Two disciplines. One accountable team.
We pair revenue-focused marketing with production-grade engineering, so the campaigns we run and the software we build always speak the same language.
Marketing & Affiliate Growth
Email Marketing
Strategy, copy, design, and deliverability management for lifecycle and promotional email programs that drive repeat revenue.
Affiliate Campaign Management
End-to-end affiliate network setup, partner recruiting, offer optimization, and payout management on performance terms.
Lead Generation
Full-funnel acquisition — landing pages, paid traffic, and list building — engineered to hit a target cost-per-lead.
Mobile & SMS Marketing
Compliant, high-open-rate SMS and push campaigns that complement email for time-sensitive offers and re-engagement.
Software Product Development
Mobile App Development
Native iOS/Android and cross-platform apps designed for retention, built to ship on schedule and scale past launch day.
Web & Backend Development
Robust backends and web apps built on Spring Boot and Node.js, designed for reliability under real production load.
Cloud & DevOps
Cloud architecture, CI/CD pipelines, and infrastructure-as-code on AWS/GCP/Azure that keep releases fast and systems stable.
API Integrations
Payment gateways, CRMs, ad platforms, and third-party APIs wired together cleanly so your data actually flows.
Why Choose Us
Built to be your only vendor for growth
Full-Stack Under One Roof
Marketing strategists and software engineers on the same team, so campaigns and the platforms behind them ship in sync.
Transparent Pricing
Flat-fee, retainer, or performance-based — you see the model up front and know exactly what you're paying for.
Fast Turnaround
Lean squads and tight feedback loops mean campaigns launch in days and software ships in weeks, not quarters.
Proven Results
Every engagement is measured against a number — open rate, CPL, uptime, or revenue — not just deliverables.
How We Work
A process that fits marketing and software alike
01
Discovery
We dig into your audience, funnel, and existing systems to understand what's actually driving — or blocking — growth.
02
Strategy
We map campaigns or a technical roadmap to specific, measurable targets before a single email sends or a line of code ships.
03
Build & Launch
Our team executes — writing, designing, developing, and deploying — with regular checkpoints so you're never in the dark.
04
Optimize
We monitor performance post-launch and iterate on copy, targeting, or code to keep results improving month over month.
Our Vision
We believe growth shouldn't require three different vendors
USInfynity started in 2016 because we kept seeing the same problem: marketing teams buying software from one shop, hiring an agency for campaigns, and outsourcing infrastructure to a third — none of whom talked to each other. We built USInfynity to close that gap. Today we run performance email and affiliate programs that generate real revenue, and we build the mobile apps, backend systems, and cloud infrastructure that those programs depend on.
Our goal isn't to be the biggest agency or the biggest dev shop — it's to be the single team you call when you need both marketing that converts and software that doesn't fall over when it works.
Selected Work
Results across marketing and software
Mobile App
Fintech Onboarding App
Shipped a native iOS/Android onboarding flow that cut signup drop-off by 41%.
Affiliate Network
Affiliate Program Launch
Recruited 220+ active affiliates and hit profitable CPA within the first quarter.
Get In Touch
Let's start your project
Tell us a bit about what you need — a campaign, an app, or both — and we'll get back to you within one business day.
Company Details
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Address
221 Market Street, Suite 400
San Francisco, CA 94105 -
Email
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Phone