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It carries no 12 month change; GET /v1/trends/categories/{l1}/{l2} has that."},"category":{"slug":"productivity-email-suites","label":"Productivity and Email Suites","technologies_total":26,"companies_with_any":8549003,"companies_with_any_est":8549003},"meta":{"verified_at":"2026-09-10T00:00:00.000Z","freshness":"fresh","taxonomy_release":"tax-2026.10","request_id":"b76f70a4-8013-4e0d-a997-638a345615d2","scope":"universe","sample_multiplier":1,"history_claim":"verified since 2020","attribution":"Data by Veridion","credits_spent":0}},"figure":{"id":"companies.proton-mail","value":60816,"unit":"companies run Proton Mail","denominator":"54,527,857 companies in the index (0.11%)","date":"12 Sept 2026","dateLabel":"landing","method":"companies-live"},"canonical":"https://stacklookup.ai/tech/proton-mail"}