This analysis describes what Substack's agreement states, permits, or reserves. It does not constitute a legal determination about enforceability. Regulatory applicability and practical outcomes may vary by jurisdiction, enforcement context, and individual circumstances. Read our methodology
The updated terms establish new content moderation procedures, including use of automated detection tools (hash-matching for CSAM, keyword filtering, direct message scanning) followed by human review before enforcement action, except where immediate action is necessary to prevent serious harm. Substack will notify users when content is removed or accounts are suspended for policy or safety reasons, unless notification would compromise an investigation or risk harm. Users may appeal content removal or account restrictions by contacting tos@substackinc.com, with Substack committing to respond within 3 business days. Beginning December 1, 2026, local VAT, GST, sales, or use tax will be added to Paid Subscription purchase prices, collected by Substack and remitted to applicable taxing authorities where its service provider is able to do so. You can report content violations using the report tool on each post or profile page, and appeal content moderation decisions by contacting the support email address.
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material that, in our sole judgment of us, is objectionable or which restricts or inhibits any other person from using the Services, or which may expose Kling AI...to any harm or liability of any type.
We may publish or share them with third parties in our sole discretion (in addition to producing them pursuant to a subpoena or other legal discovery request).
we're not responsible or liable for any picture uploaded to our Platform, and we're allowed to remove any picture at our discretion (e.g. if we detect that a picture does not meet the criteria).
"Substack reserves the right to refuse registration of or cancel a Substack account name at its discretion.Excerpt from Substack's Terms of Use
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The clause states: “Substack reserves the right to refuse registration of or cancel a Substack account name at its discretion.”
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