The Last Agency You'll Ever Hire.

If This Sounds Familiar, You're in the Right Place
Your last agency sent monthly reports you couldn't tie to a single closed deal
You're spending $25K+/month on marketing and your CEO still asks "what are we getting for this?"
Your competitors are showing up in AI search results, featured snippets, and LLM citations — and you're not
You've outgrown your current agency but your "big agency" partner feels like paying for their overhead and your junior account manager
Your marketing team is strong but stretched — you need execution horsepower, not another strategy deck
The Marketing Landscape Changed.
Most Agencies Haven't.
Three things happened in the last 18 months that made traditional agency models obsolete:
1. AI search is eating traditional SEO
ChatGPT, Gemini, and Perplexity now answer queries that used to send clicks to your site. If your agency isn't optimizing for AI visibility, you're losing ground every day.
2. The cost of mediocre marketing doubled
CPMs are up. CPCs are up. And attention spans are down. Campaigns that "kind of work" now lose money. Every dollar has to produce measurable pipeline.
3. Your competitors figured this out first
They're already running AI-native strategies, testing LLM optimization, and building compounding content engines. Every month you wait, the gap widens. (We take this so seriously that every Single Grain employee — strategists, creatives, analysts — must demonstrate Claude Code proficiency within the first few months. Most agencies are still debating whether to use AI. We made it a job requirement.)
This isn't a problem you can solve next quarter. The companies acting now are the ones that will own their categories.
We Don't Compete on Services.
We Compete on Outcomes.
Here's what actually changes when you switch to Revenue Marketing:
The Revenue Marketing Results
In Their Own Words

Why Your Marketing Isn't Working
And It's Not Your Team's Fault
The traditional agency model is architecturally broken:
Freelancers and boutique shops
Give you talent without infrastructure. You trade execution time for management time. Same bottleneck, different invoice.
Big holding company agencies (WPP, Publicis, Dentsu)
Give you infrastructure without attention. Your account is managed by someone who Googles your product name before each status call.
In-house teams
Give you control without leverage. One resignation and your pipeline stalls for 90 days.
Single Grain is the Revenue Marketing Agency.
We combine the talent density of a boutique, the systems infrastructure of a holding company, and the accountability of an in-house team. Powered by AI — every team member is required to be Claude Code proficient. Measured by revenue. Accountable to your P&L.


















Built by a Marketer
Who's Been Where You Are
Hey - I'm Eric Siu.
I bought Single Grain for $2 when it was failing. Every client had left. Revenue was zero. We rebuilt it from nothing into an agency serving Amazon, Salesforce, and Uber — because we had no choice but to deliver results. When your survival depends on client ROI, you get really good at producing it.
Twelve years later, we've helped 500+ companies influence billions in revenue. I also co-host Marketing School with Neil Patel (2,600+ episodes, 140M+ downloads) and Leveling Up (500+ episodes). I've spoken at HubSpot's INBOUND, SaaStr, and more.
I share this because I want you to know: the strategies behind your campaigns come from someone who's built, lost, and rebuilt. Not someone reading from a playbook.
How seriously do we take AI? Every Single Grain hire — from strategists to creatives — is required to demonstrate Claude Code proficiency in the first few months. Not optional. Not a nice-to-have. It's a hiring gate. That's why our team operates at 10x the velocity of traditional agencies.
We declined 87% of companies that contacted us last year. Not because they weren't good companies — because we couldn't project positive ROI for them, and we don't take money we can't multiply.
If we take you on, it's because we're confident we can deliver.

Every campaign is measured against revenue. Every quarter you get a business review tied to your P&L — not a metrics dump.
Your Quarter: Before vs. After Revenue Marketing
Zero Risk. Absolute Clarity.
Before You Spend a Dollar.
We don't lock you into annual contracts. We don't charge setup fees. And we don't take clients we can't help — that's why we declined 60% of inquiries last year.
Here's what you get before investing a dollar:
15-minute fit check
A senior strategist evaluates whether Revenue Marketing is right for your business. Honest assessment, no pitch.
Custom growth audit
Your market, competitors, and opportunity map. Built from your actual data. Yours to keep regardless.
Projected ROI model
What success looks like in pipeline dollars, not impressions. We show you the math before you commit.
The Questions Our Best Clients Asked Before Signing
You Can Start Yours Today.
with Single Grain











