Substack — History
Change log of legal documents, generated whenever the source text changes.
2026-05-15
Privacy Policy
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adaadef
Substack may now obtain extra data from third parties to enrich profiles, improve analytics, and deliver safer, more relevant experiences.
added: collection of additional information from third parties and other sources
added: use of combined data for relevance, safety, platform improvement, and analytics
clarified: merged third-party data will be handled under the Privacy Policy
2026-05-05
Privacy Policy
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2bad5e5
Substack added sharing of account identifiers with child safety consortia, expanded direct-message handling, and added one-month response and objection rights for privacy requests.
added: share account identifiers with child safety consortia to detect/prevent OCSEA
added: one-month response deadline and extension notice for rights requests
added: right to object to legitimate-interest processing, including recommendation profiling
clarified: Substack may restrict access to received DMs when senders delete or block
changed: privacy notices now mention only material policy changes