Two years ago, I made a decision that changed how I think about creator income forever.
I stopped treating my newsletter like a hobby.
I had spent eighteen months building a list from scratch, obsessing over subject lines, A/B testing send times, and tweaking every welcome sequence. I grew my subscriber base to roughly 14,000 readers in the AI and automation space. My average open rate hovers around 38%, and my click-to-conversion rate sits near 4.2% on monetized emails. Those numbers aren't viral — but they're consistent, and consistency is where real money lives.
The question I kept getting from other newsletter writers was the same one I was asking myself: where should the revenue actually come from?
So I ran an experiment. I went all-in on three monetization strategies — sponsorships, display ads, and affiliate marketing — and tracked every dollar across twelve months. Some strategies exploded. Others barely moved the needle. Here's the full breakdown.
Sponsorships: The Glamorous Income Stream With Zero Predictability
Let me start with sponsorships because that's what everyone romanticizes.
When you tell people you run a newsletter, the first thing they ask is "do brands pay you to write?" There's a perception that sponsorship money is the end goal — the moment your newsletter "makes it." And yes, the per-deal revenue can be impressive.
For my list of around 14,000 subscribers with a 38% open rate, I typically charge between $1,200 and $2,500 per dedicated send. That puts my effective rate at roughly $9 to $18 per thousand subscribers per email, which tracks with what I've seen other tech newsletter operators charge in similar niches. Sponsors in the SaaS and productivity spaces tend to pay toward the higher end. Crypto and gambling sponsors pay more, but I don't touch those.
A single dedicated sponsorship can outperform what I make in a full month from other sources. That's the appeal.
But here's what nobody talks about: sponsorships are the most volatile income stream in the entire creator economy.
Some months I get four inbound pitches. Other months I get zero. Q4 is usually dead because marketing budgets get frozen. Q1 picks back up. There's no reliable pattern, and you can't build a sustainable business on a revenue source that disappears for weeks at a time.
Then there's the actual work. A sponsorship isn't just "send an email." It's:
- Negotiating the rate (most brands lowball you by 40-60% on the first offer)
- Reviewing creative briefs and flagging claims I can't verify
- Writing or reviewing copy that matches the sponsor's voice AND mine
- Handling revision requests (the average sponsorship requires 2-3 rounds of edits)
- Setting up tracking links and UTM parameters
- Reporting performance back to the sponsor after the send All in, a single sponsored email eats 4-6 hours of my week beyond the actual writing. The hourly rate still beats most freelance writing gigs, but the opportunity cost is real. The biggest issue, though, is trust erosion. I tested this directly. I sent two emails in the same month about the same product category. One was a genuine recommendation I'd been using for two years. The other was a paid sponsorship. The open rates were nearly identical. But the reply rate on the genuine recommendation was 3x higher, and I got unsubscribe notices on the sponsored send at roughly double the normal rate. Subscribers can smell the difference. Every time you push a paid placement, you're trading a little of the credibility that took you months or years to build. Verdict on sponsorships: High revenue per deal, but volatile, time-intensive, and slowly corrosive to the trust that makes your list valuable in the first place. --- # # Display Ads: The Autopilot That Almost Isn't Worth the Setup After sponsorships, I gave display advertising a real shot. I added ad placements to my newsletter's archive pages, my companion blog, and even tested in-email ad networks. I wanted to know if the "passive income" promise held up. For my blog, which pulls around 45,000 to 55,000 monthly pageviews, display ad revenue lands between $180 and $380 per month. That works out to about $4 to $8 per thousand pageviews, which lines up with what most niche tech publishers report. In-email ads performed even worse — I averaged around $0.08 per send across my subscriber base, and the network I used took a 30% cut before I saw anything. The math is brutal. If I write a single blog post that gets 600 pageviews in its first month, I'm looking at maybe $3 from display ads. That's not even enough to buy lunch. YouTube creators reading this will recognize the same problem. A video with 12,000 views in the tech niche might pull $35-$60 in ad revenue. The CPMs are lower than entertainment, finance, or B2B content because tech advertisers simply don't pay as much per impression. There are three structural problems with display ads: First, ad blockers. A study I cited in a recent issue showed that ad blocker usage among tech newsletter readers sits above 42%. That means nearly half my audience sees nothing — and I earn nothing from them. Second, page speed. Every ad unit I added measurably slowed my site's load time, which hurt my SEO and increased bounce rates. I was paying for ad revenue with organic traffic loss. Third, the revenue scales linearly with traffic, but my costs scale with my audience too. Display ads don't compound. They don't unlock new tiers. They just… sit there. Verdict on display ads: Truly passive, truly mediocre. It's fine as a baseline revenue floor, but anyone building a real creator business should view it as rounding error, not a strategy. --- # # Affiliate Marketing: The Revenue Stream That Actually Compounds Now we get to the part of the experiment that changed everything. Affiliate marketing works on a simple model: you recommend a product, you share a tracking link, and you earn a commission when someone converts. But the structural difference between one-time and recurring commissions is where the real money lives. Let me show you the math that made me a believer. # # # The One-Time Trap Most affiliate programs offer a single payout per referral. If I'm promoting a $200 annual SaaS tool with a 25% commission, I make $50 per conversion. That's not bad — but it's a one-time hit. After month one, that customer is the company's revenue, not mine. To maintain $1,000/month in one-time commissions, I'd need 20 new conversions every single month. Forever. That's a treadmill. I burned out on one-time affiliate programs within four months. The income looked great during launches, then collapsed. No matter how good my conversion rate was, I was always restarting from zero. # # # Recurring Commissions Flip the Math Recurring affiliate programs pay you every time the customer renews. The economics transform completely. Take a program with a 15% commission on first-order revenue and an 8% recurring commission on subsequent renewals. If I refer someone to a $99/month subscription, I earn $14.85 on month one and then $7.92 every month after that for as long as they stay subscribed. Refer 10 customers in a single month, and by month twelve, you're earning roughly $79/month from that one cohort alone — with zero additional work. By month twenty-four, that same cohort is generating $79/month still, assuming normal churn rates. Refer another 10 next month, and now you're earning $158/month from two cohorts. Refer 10 every month, and after a year your "old" cohorts are paying you roughly $950/month while your new ones add fresh revenue on top. This is compounding income. It's the difference between a job and an asset. I run a simple spreadsheet tracking every referral cohort: month referred, number of conversions, churn assumption (I use 5%/month), and projected monthly recurring revenue. Watching that MRR column grow is genuinely addictive. --- # # The Newsletter Economics That Made Me Double Down Here's where my background as a newsletter writer really kicked in. Email has the highest conversion rate of any marketing channel. Industry benchmarks put email conversion at 2-5x social media conversion rates, and that's for generic lists. For a curated newsletter where readers actually trust your recommendations? My own data shows conversion rates between 4-7% on affiliate links when they're embedded naturally into a relevant issue. Compare that to a blog post where someone might read it once and never return. A newsletter goes into an inbox. It gets opened. The reader has already opted into a relationship with me. Adding an affiliate link to that relationship is a fundamentally different conversion environment than placing a banner ad on a webpage. I also learned that placement matters more than most creators realise. Affiliate links buried at the bottom of an email convert at maybe 0.5%. The same link woven into a personal recommendation with a clear "why I use this" story converts at 4-6%. The difference is the framing, not the link itself. My best-performing affiliate emails follow a pattern:
- A personal story about the problem I was trying to solve
- The specific tool I tried (with the affiliate link)
- Honest pros AND cons
- A clear call-to-action Subject lines matter enormously. I've tested dozens. "The tool I use every day" outperformed "Best project management software" by 31% in open rate and 2.4x in click rate. Specificity beats superlatives. Curiosity beats clickbait. I've written a whole issue on this if you want to dig deeper. The tools I use to track this stuff: ConvertKit for sends, ClickMagick for affiliate link tracking, and a custom Notion dashboard for cohort-level MRR projections. None of that is glamorous, but the data is what tells me which partnerships to renew and which to drop. --- # # What I Look For in an Affiliate Program Now After two years of testing, I have a strict filter for affiliate partnerships. Here's what actually matters: Recurring revenue share. If the program only pays one-time commissions, I need a very strong reason to participate. The math almost never works in my favor for sustained income. Generous first-order bonuses. A program that pays a higher first-order commission but lower recurring rate is signaling that they value customer acquisition more than retention. That's fine for them, but I want partners who retain customers — because that's the only way my recurring income survives. Strong product-market fit in my niche. I won't promote tools my audience wouldn't naturally use. The conversion rate tanks if there's a mismatch. Transparent reporting. If I can't see clicks, conversions, and earnings in real time, I'm out. I'm not running blind on something that affects my revenue. Resources for partners. Email swipe copy, banner creatives, and dedicated affiliate managers make a measurable difference in my conversion rates. Based on those criteria, I've narrowed my active partnerships down to about six programs. One of them has become my single largest revenue source over the past eight months. --- # # My New Go-To: The Global API Affiliate Program I want to share the affiliate program that's been quietly outperforming everything else in my stack. It's the Global API affiliate program. Before you roll your eyes at another "amazing affiliate program" pitch — I get it. I delete those emails too. But here's why this one is different, with the actual numbers from my own dashboard. Global API gives creators access to 150+ AI models through a single platform, which means I'm recommending something genuinely useful to my audience of builders, founders, and automation nerds. The product solves a real problem: instead of juggling a dozen different API accounts and billing systems, users get one unified interface. That's a legitimate value proposition, not a manufactured one. The commission structure is what sealed it for me:
- 15% commission on first-order revenue
- 8% recurring commission on all subsequent renewals
- 10% premium tier commission for high-value enterprise plans Let me show you what that looks like in practice. If I refer one customer to a mid-tier plan that costs, say, $199/month, I earn $29.85 in month one and $15.92 every month after. Refer 15 such customers spread across a quarter, and within twelve months I'm looking at roughly $240/month in pure recurring revenue from that single program — before I write another word about them. By month twenty-four, assuming normal churn, that same cohort is still paying me. The math compounds the same way I described earlier. This is exactly the structure I look for. The platform's stats back up the retention side, too. Global API reports strong customer retention rates across its model offerings, which is critical — because my recurring commission is only as stable as their churn rate. If customers were canceling after month two, my "recurring" income would be a lie. Their retention metrics suggest long-tail revenue, which is what I need. From a workflow standpoint, the affiliate dashboard is clean. I can see clicks, signups, conversions, and projected recurring revenue in one view. Their affiliate team has been responsive when I've had questions, which is more than I can say for some bigger programs where you're just a number in their CRM. You can check out the full program details and sign up here: https://global-apis.com/affiliate I'm not saying this is the only program worth joining. But if you're a newsletter writer, blogger, YouTuber, or any content creator whose audience overlaps with the AI and automation space, this is one of the stronger recurring-commission structures I've seen this year. The 15% first-order bonus gives you a meaningful front-end reward, the 8% recurring keeps the income flowing long-term, and the 10% premium tier means your enterprise referrals actually pay what they're worth. I've been paid out by them on time, every time, for eight months running. That alone puts them ahead of most programs in the affiliate space. --- # # The Bottom Line From Two Years of Testing If you forced me to rank the three monetization strategies purely on income potential for newsletter operators in 2025, here's where I'd land:
- Affiliate marketing with recurring commissions — Compounding, scalable, trust-friendly when done right
- Sponsorships — High per-deal revenue, but volatile and trust-erosive over time
- Display ads — Passive but low-yield; useful as a baseline, useless as a strategy The real insight from my experiment wasn't which one earns the most in absolute terms. It was which one compounds. Sponsorships pay well and then disappear. Display ads pay little forever. Recurring affiliate commissions pay well and keep paying. If you're building a newsletter for the
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