Retention.com
👤 Adam Robinson (Sold his first email startup Robly to PE for $10M (2021), then reran the exact playbook with a big LinkedIn audience feeding it.)🌐 sitetheadamrobinson.com𝕏LinkedIn
He sold one email startup for $10M, then reran the same playbook to $22M ARR — mostly bootstrapped, tiny team.
Will it work? · our read
Legal arbitrage. A proven operator reran a known email playbook in a niche shielded by one US legal rule. Very profitable now — and that single rule is also the whole risk.
01How the money moves
Anonymous shopper browses a store, never opts in
→
Retention.com matches them to an email via identity networks
→
Brand emails them; Retention.com charges a monthly fee
02The numbers
About $22M ARREstimateARR, founder-stated 2024
2024
Founder-stated milestones. The about $2M-per-employee mark was the roughly 6-person 2022 era; the team later grew to about 55.
Bootstrapped to about $22M ARR in four years; roughly 55 staff; 2025 Inc. 5000 honoree.
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See a full teardown, free → ImportYetiSourcesSources last checked 22 July 2026
Founderpath — "How We Bootstrapped to $22m" (Adam Robinson keynote)Mixergy — "The $21M ARR business that sells your email address"PR Newswire — first $1MM revenue week (Apr 2023)Inc. — Retention.com, 2025 Inc. 5000 honoreeFounderpath — $22M with six employees, the RB2B playbook
Revenue is STATED, not filed: 'about $22M ARR' is Adam Robinson's own figure from his Founderpath keynote page ('bootstrapped the company to $22m ARR in 4 years'); on Mixergy he says 21.7M ARR, or 21.95M with RB2B, and has posted '$20M ARR in under 3 years' on LinkedIn — all self-reported, unaudited, so verified:false. Retention.com is a 2025 Inc. 5000 honoree (Inc.'s profile lists No. 1,046 and 411% 3-yr growth per search results; that page 403s to a machine fetch, so treat the exact rank as reported, not machine-read). The about $2M-per-employee figure was the roughly 6-person 2022 era; the team later grew to about 55 as it added an agency motion. Mechanism and the legal-regime risk are the founder's own words on Mixergy: it works under US opt-out law, 'in Canada it is not, in Europe it is not.' We never score you.