Newsletter sponsorship source audits, checked 7 November 2026 (UTC).
Dupple Editorial Team manually read each publisher's own advertising page, about page or publisher-managed storefront. Each CSV has one selected publisher per row, a direct source URL, observation date, paraphrased reader/offer description and explicit caveats. The roster is purposive, not a census or a random sample. Counts describe source wording and our editorial coding, not independently verified audiences, completed sends, campaign results or current booking availability. No small-sample percentage is published.
Cadence codes are descriptive. DevtoDevOps says upcoming monthly. LearnKube's code records campaign frequency rather than imputing an issue cadence. RevOps Impact has a weekly descriptor alongside Thursday/Saturday wording; that row remains mixed-labels until a publisher confirms the schedule. HRNZ offers more than one publication. Reader-context groups classify the offer text, not individual subscribers. Ownership is marked yes for the included known Dupple newsletter and not-assessed for other entries; the latter is not an ownership or independence assertion.
DevOps Academy and Stock Analysis rejected an ordinary automated request but their exact primary pages were retrieved and read through web browsing on the same date. The excluded PULSE RevOps sponsor page described a website placement, so it is not evidence of a newsletter sponsorship and is not in the published roster. GTMnow was replaced in the investor list by Hyperion's explicit financial-newsletter advertising offer, while remaining in the sales/GTM list with its broad audience scope.
All wording can change after observation. A reader should ask the publisher for the actual edition, unit, creative rules, availability, report and any applicable terms. This audit does not quote or endorse performance claims, prices, investor status or customer outcomes. No subscriber or customer records were accessed.