If you're deciding between Sender.net Affiliate Program vs ConvertKit (Direct Program - Not Listed Exclude), you're comparing two email marketing platforms with solid affiliate monetization potential. Both programs offer recurring commissions, but they differ in rate, approval friction, and audience alignment. This guide breaks down everything you need to know to choose the right program for your traffic and audience.
Commission comparison
Sender.net Affiliate Program: 35% recurring
ConvertKit (Direct Program - Not Listed Exclude): 30% recurring
What this means for typical publishers:
At 1,000 clicks/month to either platform:
- Sender.net: Assuming a 2% conversion rate (20 new customers), you'd earn approximately $140–$280/month depending on average customer LTV. Over a year, with compounding referrals, this grows substantially.
- ConvertKit: Same 2% conversion rate yields roughly $120–$240/month, a 15–20% lower monthly income.
The real difference emerges at scale:
A publisher sending 5,000 clicks/month would pocket an extra $700–$1,400 annually with Sender.net's higher rate. Over three years, that's $2,100–$4,200 in additional earnings—money that compounds as referred customers stay longer.
Important caveat: ConvertKit customers tend to have higher lifetime value in certain niches (creator-focused audiences). A lower conversion rate but higher LTV on ConvertKit might close the gap in practice. Always test both.
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Cookie window
Both programs: 90 days
A 90-day cookie window means a referred user has 90 days to sign up and you still earn commission. This is standard for SaaS affiliate programs and reasonably generous.
What this means for publishers:
- If you publish an email marketing guide in January, referrals from that article through April still count as your sales.
- Long consideration cycles (common with email marketing platforms) are covered adequately.
- Cross-device tracking: Users who click on mobile but sign up on desktop later are attributed correctly (within the window).
Publisher advantage: Neither program disadvantages you here. The tie means your decision should rest on commission rate, approval, and audience fit instead.
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Network & reliability
Sender.net: In-house affiliate management ConvertKit: In-house affiliate management
Tracking accuracy
Both platforms manage their own affiliate infrastructure, eliminating third-party tracking networks. This is good for accuracy but puts the onus on each company's engineering.
- Sender.net: Historically reliable tracking; in-house systems are well-maintained. Payouts have been consistent.
- ConvertKit: Excellent tracking (also managed in-house); very few publisher complaints about missed attributions.
Edge: Slight to ConvertKit — their creator-focused business means affiliate tracking is prioritized heavily.
Payout consistency
- Sender.net: Monthly payments, typically net-30.
- ConvertKit: Monthly payments, typically net-30.
Both are reliable. No meaningful difference here.
Support
- Sender.net: Responsive affiliate support; dedicated account management for top earners.
- ConvertKit: Premium support for affiliates; strong community and resources.
Edge: ConvertKit — more robust creator-focused resources and community engagement.
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Approval requirements
Sender.net Affiliate Program: Easy approval
What you need: 1. An active website, newsletter, or social media channel with some audience (no minimum specified, but 100+ engaged followers recommended). 2. A brief explanation of your traffic source. 3. Compliance with Sender.net's terms (no spam, no paid search on branded keywords without permission).
Timeline: 1–3 business days.
Reality: Most publishers are approved within 24 hours if they have legitimate traffic.
ConvertKit (Direct Program - Not Listed Exclude): Medium approval
What you need: 1. Demonstrated audience in creator, writer, or podcaster spaces (preferred but not mandatory). 2. Detailed traffic analytics or media kit. 3. Explanation of how you'll promote ConvertKit (e.g., through content, newsletters, recommendations). 4. No spammy traffic sources; ConvertKit vets creators carefully.
Timeline: 3–7 business days (can be longer if they need to review your content).
Reality: ConvertKit is selective about who they approve because they care deeply about brand alignment. If you're in the creator economy, approval is straightforward. If you run a generic tech blog, you might be declined or asked to provide more context.
Winner for ease: Sender.net (no gatekeeping).
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Features & program highlights
Sender.net Affiliate Program
- 35% recurring commission (no tiering, flat rate).
- 90-day cookie window.
- Deep-link support for specific pricing pages.
- Marketing materials: Pre-built banners, email templates, landing page copy.
- No content restrictions (as long as it's not spam).
- Affiliate dashboard: Real-time stats on clicks, conversions, and earnings.
Unique advantage: Sender.net positions itself as an affordable alternative to ConvertKit and Mailchimp, so comparison content performs well. Publishers can leverage this positioning.
ConvertKit (Direct Program - Not Listed Exclude)
- 30% recurring commission (flat rate).
- 90-day cookie window.
- Creator-centric marketing materials (designed for writers, podcasters, course creators).
- Integration support: Help promoting ConvertKit alongside other creator tools.
- Exclusive bonuses for top affiliates (additional commission boosts, co-marketing opportunities).
- Community: Access to ConvertKit's creator network for collaboration.
Unique advantage: ConvertKit's brand power in the creator space leads to higher conversion rates if your audience overlaps with their target market.
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Publisher fit — who should promote which?
Promote Sender.net Affiliate Program when:
1. You run a general email marketing blog or resource site. Sender.net appeals to budget-conscious teams and solopreneurs. Comparison content ("Sender.net vs ConvertKit," "Affordable email marketing tools") converts well. 2. You have 500–5,000 monthly active readers. Sender.net approves quickly, so you can monetize earlier. The lower barrier to entry makes this ideal for growing publishers. 3. You prioritize pure earnings potential. The 35% rate compounds faster than ConvertKit's 30%, especially if you're sending consistent traffic.
Promote ConvertKit (Direct Program - Not Listed Exclude) when:
1. Your audience is creators: writers, podcasters, online course instructors, Substack users. ConvertKit owns this niche. Their audience alignment is unmatched, and conversion rates reflect it. 2. You run a newsletter or community in the creator economy. Your credibility + ConvertKit's positioning = higher perceived value and conversions. 3. You prioritize quality over quantity. Fewer referrals with higher LTV often outperforms more referrals at lower LTV. ConvertKit customers tend to be long-term subscribers.
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FAQ
1. Can I promote both Sender.net and ConvertKit simultaneously?
Yes. Most affiliate programs allow you to promote competitors. However, be transparent with your audience. If you're comparing the two, disclose your affiliate relationship with both. Biased recommendations erode trust.
2. Which program is easier to get approved for as a beginner?
Sender.net. Easy approval means you can start earning within 24 hours. ConvertKit's medium approval process is fine if you're in the creator space, but Sender.net won't gatekeep you based on niche.
3. What's the realistic earning potential?
- Sender.net: $100–$500/month for publishers sending 500–2,000 clicks/month (depending on conversion rate and customer LTV).
- ConvertKit: $80–$600/month at the same traffic levels (lower rate but potentially higher quality conversions).
Real earnings depend heavily on your traffic quality, audience fit, and content relevance.
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FAQ (continued)
4. How long do affiliate commissions last?
Both programs: 30% to 35% recurring for the lifetime of each customer you refer. If a referred customer stays with Sender.net or ConvertKit for 5 years, you earn commission for all 5 years (30% or 35% of their monthly fee). This is where affiliate programs pay off long-term.
5. Do I need to use the products myself to promote them?
Strongly recommended. Both platforms favor affiliates who have genuine experience. ConvertKit especially wants affiliates who genuinely use ConvertKit. Authentic reviews convert better and earn higher payouts.
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Final thought
The best choice depends on your traffic source, audience, and goals. Sender.net wins on commission rate and approval ease; ConvertKit wins on brand power and creator-audience fit. Test both if your audience is large enough to support split testing, and let performance data guide your promotion strategy over time.
Related: Sender.net Affiliate Program vs ActiveCampaign: affiliate program comparison