Cold outbound sales agency
An agency that runs full cold outbound (email, calling, LinkedIn) for B2B clients, monetized via retainer or per-meeting.
The idea, in plain language
Run a B2B cold-outbound agency - email, calling, LinkedIn and ringless voicemail - that books meetings or qualifies leads for SMB clients, monetized via $1,000-$5,000 monthly retainers or per-meeting fees. Videos cite Chris's live 'AI voice agent sold live via 500 ringless voicemails' demo, Brandon Doyle's $1K-$5K/mo AI-agency customer playbook, Rachel Smith's restaurant-specials-board business ($10-15K/month) that uses boards as a foot-in-the-door to upsell websites and AI services, Cody Schneider's marketing-agents cold-DM build (~$200/month for ~10K emails), Noah Kagain's Airbnb sales formula (cold outbound + scarcity + social proof), Chris Hutchins's 'AI-powered boring-service businesses' and 'onboarding-call agency' ideas, the 'one white whale per quarter' sales keynote, and the $1B/day side-hustle brainstorm covering porch-pumpkin rentals, sport courts, vending, dumpster rental and RV parks. Customers are SMBs who hate cold outreach themselves; startup cost is software and a few hundred leads; the videos are explicit that consistency beats fancy tools.
Where the sources agree
- Cold outbound is still the highest-leverage channel for selling SMB services - email, calling, LinkedIn DMs and SMS all work, and AI agents now do 80% of the mechanical work.
- Pick a narrow vertical and a single offer; the 'white whale' keynote and the 'one-person agency' segments both warn against generic 'we do marketing for everyone' positioning.
- AI voice agents, ringless voicemail (Sly Broadcast) and scraped Google Maps leads are the modern outbound toolkit - Outscraper, SearchBug, Apollo, Million Verifier all show up repeatedly.
- Retainers in the $1K-$5K/month range are the proven entry price; agencies grow by upselling AI automation, websites and reputation management on top.
Where they differ
- The Koerner Office dominates (8 of 14): the live ringless-voicemail/AI-voice-agent build, the Brandon Doyle first-customer playbook, the Rachel Smith board business, the undervalued-deals scrape-and-text pipeline, the SMBash 'one white whale' keynote, the 'most profitable side hustle with no money' land-wholesaling discussion, the $53K/month vending-machine walkthrough, and the dumpster-rental playbook.
- Greg Isenberg carries 3: Cody Schneider's cold-DM marketing-agent masterclass (live build), Chris Hutchins's 'AI-powered boring services' brainstorm, and Jonathan Courtney's third-place business riff.
- My First Million is mostly thematic: Noah Kagain's $80M Airbnb sales formula, a habit expert tangentially praising cold calling 900 people, and the franchise-acquisition framing.
- Channel posture: Koerner does the live operator demos; Greg and MFM stay at the brainstorm/framework level - only Koerner shows a real signup funnel on screen.
- Time-to-first-dollar: Koerner's segments show $1K/month clients in weeks; Greg's $200/month agent build shows a service that can be set up in an afternoon; MFM's Noah Kagain segments are longer-cycle (8-figure AppSumo).
What each source says
KoernerI Built an AI Agent in 5 Minutes (And Sold It Live)
Chris's live demo shows an agency wedge built from scraped local leads, ringless voicemails through Sly Broadcast, callbacks, and an AI voice agent built in GoHighLevel with ChatGPT and a simple knowledge base.
Watch on YouTubeKoernerHow to Get Your First $1,000 per Month Agency Customer
Brandon Doyle's agency episode frames AI-powered marketing and SEO as a fixed-retainer service, with first customers typically worth $1,000 to $5,000 per month.
Watch on YouTubeKoernerThe Simplest $10K+/M Business You've Never Heard Of
Rachel Smith's restaurant specials-board business shows how an offline advertising asset can become a foot in the door for website, reputation-management, and AI automation upsells.
Watch on YouTubeIsenbergMarketing Agents Masterclass (GROW your startup)
Cody Schneider's masterclass shows a LinkedIn engagement to cold-DM agent: watch 10-20 creator accounts, scrape engagers with Apify, waterfall-enrich through tools such as Apollo and Million Verifier, and run cold email plus LinkedIn DMs with an agent managing replies.
Watch on YouTubeMFMHow This +$80M Founder Launches A Startup In A Weekend | ft. Noah Kagain (#546)
Noah Kagan's 48-hour launch framing supports standing up a new micro-SaaS quickly from reusable pieces: Stripe payments, an SMS receptionist, and a landing-page template aimed at one new vertical.
Watch on YouTubeIsenberg5 game-changing startup ideas from a life hacking genius
Chris Hutchins' agency idea points toward an AI-powered intake and onboarding-call service for professional-service businesses, sold on a per-call or managed-service basis.
Watch on YouTubeKoernerHow to Find the Best Undervalued Deals (For Beginners)
The episode shows how a scrape-and-text pipeline can become lead generation for local-service products, not just a way to find businesses to buy.
Watch on YouTubeKoernerHow to Sell Your Stuff Through Uber and Lyft Drivers (+4 more biz ideas)
The HoldCo Bros episode's wedding-industry segment supports positioning an AI guest-communication layer for wedding vendors competing with The Knot's lead-generation model.
Watch on YouTubeKoernerThe Most Profitable Side Hustle to Start With No Money
Video covers The Most Profitable Side Hustle to Start With No Money.
Watch on YouTubeKoernerHow to Find HUGE Customers
Chris's white-whale framework suggests choosing one large vertical per quarter, then repeating the locate-offer-close loop with a focused wedge for high-value customers.
Watch on YouTubeMFM#1 Habit Expert: Why Your To Do List Is Making You Less Productive
Video covers #1 Habit Expert: Why Your To Do List Is Making You Less Productive.
Watch on YouTubeKoernerStop Rambling: 7 Tricks to Make People Respect You
Video covers Stop Rambling: 7 Tricks to Make People Respect You.
Watch on YouTubeKoernerHow to Launch a $53k/month Vending Machine Business for $700 in 2026
Video covers How to Launch a $53k/month Vending Machine Business for $700 in 2026.
Watch on YouTubeKoernerSecrets to Starting a Dumpster Rental Business
Video covers Secrets to Starting a Dumpster Rental Business.
Watch on YouTubeTools people use for this
Funnels, email/SMS, pipelines and client sub-accounts in one platform — the usual stack for a service agency.
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