What's been the most profitable AI product or offer you built so far?
The most profitable AI product I've built is my cold‑email system. I've sold several hundred thousand dollars worth of it, and it was by far the simplest thing for me to set up. The system isn’t really a cold‑email service per se; I essentially repackage Instantly, handling domain setup, email inbox configuration, and building simple automations that pull a lead list into Google Drive, enrich it, and then generate a ready‑to‑pitch list.
Cold email isn't really automation; you can easily build an AI‑enabled cold‑email agency, which is a top solo‑freelancer model right now. But the simplest, highest‑leveraged system you can build for a client is a 'speedtole' system—a glorified autoresponder. You watch a mailbox for incoming mail from a filter (e.g., Facebook lead ads sending an email), then using Make.com, n8n, or cloud routines you scan the mailbox, get the trigger, and immediately reply via email. Then you send a Twilio SMS, and a team member calls the prospect. This cuts response time from minutes to under a minute, boosting pickup and conversion rates because of the perceived professionalism of your system. I’ve seen this system add over a million dollars in revenue for clients and improve existing funnels by 10‑20%, easily generating an easy $500k per year.
Not for beginners — if you already have a big brand, YouTube channel, and a working Instagram funnel, you could sell an AIOS, but as a total newbie, don't. Instead, pick a specific lane, ideally something tied to reach/acquisition: creative-generation systems (ad creative testing across Google, Facebook, TikTok, etc.), automated prospect research for cold email/LinkedIn icebreakers, and speed-to-lead systems (immediately following up with anyone who opts in from an ad, maximizing show/booking rate — even something as simple as calling a lead twice instead of once, or texting back a missed call automatically, can double conversion). Also strong: automated follow-up across SMS/email/DM for anyone who's expressed interest, and inbound lead-magnet systems (e.g. ManyChat-based funnels tied to a creator's content). The common thread: focus on a narrow, specific lane that produces a clearly measurable revenue outcome — that lets you proportionally scale a client's revenue in a way that's easy to prove and sell.
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It’s a great time to build personalization flows because new entrants in cold email are higher than ever. Cold email had a big renaissance, AI personalization hit, and it still outperforms other marketing methods when run competently. Personalization boosts ROI, but you need to go beyond simple icebreaker lines—constrain the AI output, use your copywriting to write templated bits like “I love that you’re doing X. It’s refreshing to see that you’re doing that. Figured I’d reach out.” If you don’t constrain, AI‑generated icebreakers feel flamboyant and are seen as AI‑written, hurting perceived personalization. Instead, personalize the specific high‑ROI parts of the email (not the whole thing or just one line). Examples: paraphrase three interesting things from a prospect’s podcast, or pull key quotes from their content. You can run thousands of these personalized emails a day at a token cost (~$20/month). There’s massive untapped potential—cold email volume will soon far exceed what most people are doing.
I would focus on building AI‑powered systems that increase reach. First, create ad‑creative systems: AI can generate Meta ads quickly, replacing the slow Canva workflow that takes days with a process where the media buyer can spin up an ad in 30 minutes, allowing rapid iteration. Second, use AI for cold‑email outreach: let AI scour the web, build massive prospect lists, and craft personalized icebreakers. This expands the number of eyes on your offer. Finally, improve lead response speed by automating the post‑inquiry workflow—when a form is submitted, an AI reads the data and instantly sends a personalized text or email saying, “Hey, this is Cloud, I’ve received your request and will call you in 30 seconds.” This creates the perception of immediate customer service and can be applied across email, SMS, and other platforms, boosting conversion and expansion.