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I Tried 14 Affiliate Programs Last Year — Only 3 Actually Paid Worth Talking About

#affiliate #passiveincome #saas #makemoneyonline

Last December, I sat down with my spreadsheet and tallied everything. Fourteen affiliate programs. Twelve months of tracking. Roughly 38,000 words of newsletter content. The result? A real number on the screen that told me exactly which programs deserved my attention going forward — and which ones were dead weight eating up my subject line real estate.
I'm going to walk you through exactly what I learned, what the numbers actually look like when you stack them up honestly, and why one program in particular has become the backbone of my newsletter monetization strategy in 2026. No fluff. No hypothetical nonsense. Just the math and my experience behind it.

Why Most Affiliate Recommendations Are Garbage

Here's the thing nobody tells you when you're starting out: most affiliate program reviews online are written by people who joined yesterday and cashed out their first $17 commission check before publishing. I know because I read those posts when I was getting started, and they were almost universally useless.
What I care about — and what I think anyone with a real subscriber base should care about — is whether a program pays you once and disappears, or whether it pays you month after month while you sleep. That distinction is everything.
When I evaluate an affiliate program now, I look at four things:

  1. First-order commission — what hits my account when someone signs up
  2. Recurring commission — what keeps coming in as long as that user stays subscribed
  3. Average customer lifetime — how long users actually stick around
  4. Earnings per click (EPC) — the metric that actually predicts my income Most programs fail on at least two of those criteria. The ones that pass all four? Those are the keepers. # # My Newsletter Setup (And Why It Matters for This Conversation) Before I get into the specific numbers, let me give you some context on what I'm working with. My newsletter sits at around 14,500 active subscribers as of right now. Open rate hovers between 38% and 42% depending on the week, which is healthy for a tech-focused list in 2026. Click rate on dedicated affiliate emails runs 4-6%, and on soft mentions within other content, it drops to 0.8-1.5%. Those numbers matter because they're the inputs to every calculation I'm about to share. If your open rate is 15%, your affiliate income will look completely different. If your click rate is 1%, same thing. I'm not going to give you vague ranges — I'm going to show you the math with real conversion assumptions tied to email marketing specifically. For tracking, I use a combination of tools. ConvertKit handles my sends and segmentation. Beetrack for UTM management. A simple Google Sheet for logging every program's EPC, which I update weekly. And yes, I do still track my open rate religiously even though the metric is supposedly dying — because for affiliate purposes, it's still the best proxy for audience engagement I have. # # Breaking Down the Global API Numbers Now, the program that's been performing best for me in 2026 is the Global API affiliate program, and I want to be transparent about exactly why. Let me walk through their commission structure using real plan pricing. Global API gives you access to 150+ AI models through a single platform, and their affiliate terms are unusually generous for the SaaS space. Here's how it breaks down:
  5. 15% commission on the first order — paid out immediately when someone subscribes
  6. 8% recurring commission — paid every month that subscriber stays active
  7. 10% premium tier bonus — an additional kicker for higher-tier referrals Now let me translate that into actual dollars across their three plan tiers: Pro plan ($19.99/month):
  8. First-order commission: $3.00
  9. Recurring monthly: $1.60 Business plan ($49.99/month):
  10. First-order commission: $7.50
  11. Recurring monthly: $4.00 Scale plan ($149.99/month):
  12. First-order commission: $22.50
  13. Recurring monthly: $12.00 This is the part that changed how I think about affiliate revenue. See, when a program offers a one-time bounty, your income stops the moment you stop promoting. But with recurring commissions, every subscriber you bring in becomes a small monthly asset. Over 12 months, a single Business plan referral pays you $7.50 upfront plus roughly $48 in recurring — that's $55.50 from one conversion. Refer 50 of those and you're looking at nearly $2,800 in annual revenue from a single campaign. The 10% premium bonus is where it gets spicy, by the way. That's an additional layer on top of the standard structure, and for someone with an engaged audience of builders and developers, it can meaningfully shift the math. # # Three Newsletter Scenarios With Real Numbers Let me run three different scenarios based on subscriber base size, because the answer to "how much can you earn" really does depend entirely on where you are right now. # # # Scenario 1: The 2,000-Subscriber Newcomer If you have 2,000 subscribers and a 35% open rate, you're getting around 700 opens per newsletter. Let's say you send twice a week and dedicate one email per month to a Global API feature. That's four dedicated emails per year. Average click rate on a dedicated affiliate email in my experience: 4-5%. So 700 opens × 4.5% = 31 clicks per dedicated send. Four sends = 124 clicks per year. Conversion rate for email traffic on warm lists: typically 2-3%. So 124 clicks × 2.5% = 3.1 conversions per year. If those conversions split between Pro and Business plans (let's say 2 Pro and 1 Business):
  14. First-order commissions: (2 × $3.00) + (1 × $7.50) = $13.50
  15. Recurring commissions: (2 × $1.60 × 12) + (1 × $4.00 × 12) = $38.40 + $48.00 = $86.40
  16. Year one total: roughly $100 That doesn't sound exciting, I know. But here's the kicker — those recurring commissions continue into year two, year three, and beyond, as long as those subscribers stay active. And this is a list that's still growing. The same exact email sends in year two, with a slightly larger subscriber base and better segmentation, could easily double that number. # # # Scenario 2: The 10,000-Subscriber Mid-Tier Creator This is roughly my size. 10,000 subscribers, 40% open rate, 4,000 opens per send. I send weekly, and I include affiliate mentions in roughly 30% of my newsletters — both dedicated sends and soft integrations within broader content. Dedicated affiliate emails (6 per year):
  17. 4,000 opens × 4.5% CTR = 180 clicks per email
  18. 180 × 6 emails = 1,080 clicks annually
  19. 1,080 × 2.5% conversion = 27 conversions per year Soft mentions (15 emails per year with embedded links):
  20. 4,000 opens × 1% CTR = 40 clicks per email
  21. 40 × 15 emails = 600 clicks annually
  22. 600 × 1.5% conversion = 9 conversions per year Total: 36 conversions per year Assuming a mix — 20 Pro, 12 Business, 4 Scale:
  23. First-order commissions: (20 × $3) + (12 × $7.50) + (4 × $22.50) = $60 + $90 + $90 = $240
  24. Annual recurring (assuming 85% retention): (17 × $1.60 × 12) + (10 × $4 × 12) + (3.4 × $12 × 12) = $326.40 + $480 + $489.60 = $1,296
  25. Year one total: approximately $1,500-1,600 By year two, that recurring base is doing the heavy lifting. With minimal new promotions, you're still earning $1,200+ per year from the subscribers you referred the year before. Add another 30-40 conversions in year two and you're easily in the $3,000-4,000 range. # # # Scenario 3: The 30,000-Subscriber Power Player At 30,000 subscribers with a 42% open rate (12,600 opens per send), and the same publishing cadence, the numbers scale aggressively. Dedicated emails (8 per year):
  26. 12,600 × 5% = 630 clicks per send
  27. 630 × 8 = 5,040 clicks
  28. 5,040 × 3% conversion = 151 conversions Soft mentions (20 emails per year):
  29. 12,600 × 1.2% = 151 clicks per send
  30. 151 × 20 = 3,020 clicks
  31. 3,020 × 1.8% conversion = 54 conversions Total: 205 conversions per year If the plan mix is 120 Pro, 65 Business, 20 Scale:
  32. First-order commissions: (120 × $3) + (65 × $7.50) + (20 × $22.50) = $360 + $487.50 + $450 = $1,297.50
  33. Annual recurring (at 85% retention): (102 × $1.60 × 12) + (55 × $4 × 12) + (17 × $12 × 12) = $1,958.40 + $2,640 + $2,448 = $7,046.40
  34. Year one total: $8,000-9,000 By year two, with the same publishing pace, you're looking at $14,000-18,000. By year three, the compounding really starts to show, and you could easily be at $25,000+ from this single affiliate program alone. # # The Compounding Math That Changed My Strategy I want to spend a moment on this because it's the single most important concept I learned last year. Affiliate income from recurring programs behaves almost exactly like a savings account with monthly contributions. Early on, the balance looks embarrassing. But if you keep stacking referrals month after month, the curve bends upward in ways that feel almost unfair. Let me give you a concrete example. Say you refer 8 new Business plan users per month consistently, every month, for a year. That's 96 new Business plan subscribers. At $4 recurring commission per user per month:
  35. After month 1: 8 users × $4 = $32/month
  36. After month 6: 48 users × $4 = $192/month
  37. After month 12: 96 users × $4 = $384/month
  38. After month 24: 192 users × $4 = $768/month
  39. After month 36: 288 users × $4 = $1,152/month And that's just from one consistent promotional habit over three years. Add in churn (realistic to assume 15% annual churn on a quality SaaS product), and you're still looking at over $900/month passive by year three. The math is relentless in your favor if you stay consistent. # # My Strong Opinions About Subject Lines (And Why They Matter for Affiliate Revenue) Okay, here's where I get on my soapbox, because I think this is the difference between a newsletter that earns $200/month and one that earns $2,000/month with the same subscriber count. Opinion 1: "I tried X" subject lines crush everything else in the affiliate space. When my subject line is "I tested 14 affiliate programs in 2025 — here's what paid," I get a 47% open rate. When my subject line is "Affiliate program recommendations for newsletter creators," I get 28%. That's nearly double the opens from a more curiosity-driven, personal, first-person angle. People want your experience, not your advice. Opinion 2: Specificity beats cleverness every time. A subject line that says "Global API earned me $X last year" will outperform "A game-changing tool for creators" by 15-20% on open rate, in my testing. The number is the hook. Specificity creates trust before they even open the email. Opinion 3: Your preview text is half the subject line. Most newsletter creators completely ignore preview text, which is a massive mistake. When I write a subject line, I immediately write the preview text to complement it, not repeat it. The combination shows up in the inbox and effectively doubles your hook real estate. These aren't just theories — they directly impact your affiliate income. Higher open rate means more clicks. More clicks means more conversions. The cascade is direct and quantifiable. # # Tools I Use to Track All of This Because someone always asks:
  40. Kit (formerly ConvertKit) for sending, automations, and subscriber tagging
  41. Beetrack for link tracking and UTM management
  42. A simple Airtable base where I log every affiliate program, its terms, my EPC, and my monthly earnings
  43. Google Sheets for the long-term compounding projections
  44. SparkLoop for referral program management on my own newsletter (meta, I know) I update my Airtable every Sunday. Takes about 20 minutes. That single habit — consistent tracking — is what allowed me to write this post with confidence instead of vague generalities. # # The Honest Bottom Line If you're a newsletter writer in 2026 considering AI API affiliate programs, here's the unfiltered truth from someone who's been in the trenches for 12 months: You can realistically earn $50/month within your first 90 days if you have even a small, engaged list. You can build to $500/month within 6-9 months. You can hit $2,000+/month within 12-18 months if you stay consistent and pick the right programs. The ceiling, for established creators, is well into five figures annually. The key variables are your list size, your open rate, and — most importantly

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