Seed · Developer Tools · Paris, France · Founded 2020 · 2–10 employees
Mailwarm is a Paris‑based SaaS platform that automates email warm‑up and deliverability by generating real engagement signals at scale. It was founded in 2020 and gained recognition through Y Combinator and Station F, and achieved the top rank on Product Hunt, reflecting early traction. The company serves founders, sales teams, and agencies by improving sender reputation and inbox placement, and was acquired by deliverability platform mailX in June 2025. It has a lean, distributed engineering‑led team across Paris, Casablanca and Dubai.
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