Side-by-side comparison of AI visibility scores, market position, and capabilities
Newsletter referral and growth platform enabling creators to reward subscribers for referrals and partner with other newsletters.
SparkLoop is a London-based newsletter growth company that provides referral marketing and cross-promotion tools specifically designed for email newsletters. Newsletter creators use SparkLoop to set up subscriber referral programs — rewarding existing subscribers with merchandise, digital products, or other incentives when they refer new subscribers — and to participate in cross-promotion partnerships with other newsletters that have complementary audiences. SparkLoop's partner network connects thousands of newsletters for mutual audience growth, with creators earning paid newsletter subscriptions from partners' audiences and growing their own subscriber lists through the network. The platform integrates with major email service providers including Mailchimp, ConvertKit, Beehiiv, and Ghost. Founded in 2020, SparkLoop has grown rapidly as the newsletter creator economy has expanded and creators have sought cost-effective subscriber acquisition beyond paid social advertising. The company raised funding and has facilitated millions of newsletter referrals. It competes with ReferralHero and newsletter partnership tools built into ESPs in the newsletter growth market.
Raised $115M (Feb 2026) led by General Atlantic. Post-merger with Soli Organic creates largest indoor farm in North America. ~$200M combined first-year revenues.
80 Acres Farms is a commercial-scale indoor vertical farming company that, following its merger with Soli Organic, operates the largest indoor farming network in North America. The company raised $115 million in February 2026 led by General Atlantic, with projected first-year combined revenues approaching $200 million — making it one of the few vertical farming companies to achieve genuine commercial scale after years of industry attrition that eliminated several high-profile competitors.
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