ActiveCampaign is an industry-leading customer experience automation platform combining email marketing, marketing automation, CRM, and sales tools. Serving over 185,000 businesses globally, it’s a premium brand in the email marketing and automation space with strong recognition among marketing professionals. The affiliate program is managed on PartnerStack and pays up to 30% recurring commissions for up to 12 months per referred paying customer. Entry-level affiliates typically start at 20-25%, with the 30% maximum rate available to higher-performing partners. Commissions terminate immediately if the referred customer cancels before the 12-month window ends, so earnings are directly tied to customer retention. The 90-day cookie provides a comfortable conversion window, and PartnerStack delivers solid real-time analytics and monthly payouts. ActiveCampaign’s wide feature set — covering email automation, CRM pipelines, site tracking, and SMS — makes it a natural fit for content targeting email marketers, SaaS professionals, and digital marketing consultants. Plans range from $15/month to $145+/month, creating meaningful commission ranges per referral.

Thinkific is a Canadian online course and membership platform founded in 2012 and publicly traded on the TSX (THNC). The platform has empowered 50,000+ active creators and facilitated $3.7 billion in cumulative creator earnings, with content reaching 200+ million learners globally.

Thinkific launched Agentic AI features in June 2025 and earned a 2025 TrustRadius Top Rated Award. The affiliate program via PartnerStack offers 30% lifetime recurring commission on all standard paid plans and a flat $150/month recurring for Plus plan referrals. The 90-day cookie window is one of the longest in the online course platform space.

Brevo (formerly Sendinblue) is a leading all-in-one digital marketing platform serving 500,000+ businesses worldwide. Founded in 2012 in Paris and rebranded as Brevo in 2023, the platform combines email marketing, SMS campaigns, WhatsApp marketing, CRM, transactional email, live chat, and marketing automation. Brevo’s free plan supports up to 300 emails per day, making it a compelling entry point for small businesses. The affiliate program via PartnerStack offers a dual-commission structure: 5 EUR per free signup plus 100 EUR per paid conversion — providing income from both traffic volume and high-intent buyers.

Kit (formerly ConvertKit) is a leading email marketing and creator platform founded in 2013 by Nathan Barry. Rebranded as Kit in 2024, the platform serves 700,000+ creators including bloggers, podcasters, YouTubers, and course creators. Kit combines powerful email automation, landing pages, forms, paid newsletter tools, and Creator Network features. The affiliate program via PartnerStack offers 30% recurring monthly commissions for a full 24 months per referred customer — double the standard 12-month window offered by most SaaS programs. With Kit plans ranging from $25 to $2,000+/month depending on subscriber count, the earning potential per referred customer is substantial.