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Letter App's HubSpot App Marketplace listing has had no detected changes in the last 90 days — its pricing, tagline and description copy, screenshot gallery, metadata, and category placement have all stayed stable. This page tracks the listing's full change history, diffing each daily snapshot against the previous one so you can see exactly what was edited and when. When the listing is updated, the new change will appear here with a deep link into the relevant section of the audit report.