Substack can change these Terms at any time, and continuing to use the platform after notice is posted counts as your acceptance of the new Terms. Your only alternative is to stop using Substack.
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
This clause means the rights and obligations you agreed to when you first signed up can change, and the notice mechanism (which may be a website notice rather than a direct email) may not reliably bring changes to your attention before they take effect.
Substack can update its Terms at any time with notice delivered by website posting, email, or other unspecified means. Continued platform use constitutes acceptance, meaning users who miss a notice may inadvertently agree to materially different terms. Users who disagree with changes must stop using the service, with no option to negotiate or maintain prior terms.
How other platforms handle this
Target reserves the right to change these Terms at any time. We will post notification of changes to these Terms on this page. Your continued use of the Target Services after any changes to these Terms constitutes your acceptance of the new Terms.
We reserve the right, at our sole discretion, to amend these Terms of Service at any time and will update these Terms of Service in the event of any such amendments. We will notify our Users of material changes to this Agreement, such as price changes, at least 30 days prior to the change taking eff...
Uber reserves the right to modify the terms and conditions of these Terms or its policies relating to the Services at any time, effective upon posting of an updated version of these Terms on the Services. You should regularly review these Terms, as your continued use of the Services after any such c...
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"We reserve the right to change the Terms at any time, but if we do, we will bring it to your attention by placing a notice on the website, by sending you an email, and/or by some other means. If you don't agree with the new Terms, you are free to reject them; unfortunately, that means you will no longer be able to use Substack. If you use Substack in any way after a change to the Terms is effective and notice has been provided, that means you agree to all of the changes.— Excerpt from Substack's Substack Terms of Use
REGULATORY LANDSCAPE: Unilateral contract modification clauses in consumer agreements engage the FTC Act's unfair or deceptive practices standards, as well as EU Unfair Contract Terms Directive provisions. Courts in various US jurisdictions have examined whether continued use as constructive acceptance is enforceable, particularly where the notice mechanism does not ensure actual user awareness. The GDPR's consent requirements for changes to processing activities add a layer of complexity for EU users: changes to Terms that affect data processing may require renewed or updated consent rather than mere constructive acceptance. GOVERNANCE EXPOSURE: Low to Medium. Unilateral modification rights are standard in platform terms of service and courts have generally upheld them where notice is adequate. The 'and/or some other means' language for notice delivery is imprecise and could create disputes about whether effective notice was provided for a given change. The absence of a minimum notice period before new terms take effect is notable. JURISDICTION FLAGS: EU and UK users may challenge constructive acceptance of material term changes under consumer protection law, particularly where changes affect data processing or substantive rights. California courts have examined the adequacy of notice mechanisms in determining enforceability of modified terms against California consumers. The absence of a specified minimum notice window before changes take effect could be a vulnerability in jurisdictions requiring meaningful opportunity to review. CONTRACT AND VENDOR IMPLICATIONS: Enterprise and institutional Substack publishers should monitor for Terms update notifications, as changes could materially affect content license scope, dispute resolution procedures, or data handling obligations without requiring affirmative re-consent. Internal processes for tracking platform terms changes should be implemented. COMPLIANCE CONSIDERATIONS: Legal and compliance teams supporting Substack-based publishing operations should subscribe to update notifications and establish a calendar review process for Terms changes. Any change to the arbitration clause, content license scope, or data handling terms should trigger a compliance review. The note that no amendment is effective unless in writing and signed by both parties (for user-initiated amendments) further reinforces the one-sided modification right.
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This clause means the rights and obligations you agreed to when you first signed up can change, and the notice mechanism (which may be a website notice rather than a direct email) may not reliably bring changes to your attention before they take effect.
Substack can update its Terms at any time with notice delivered by website posting, email, or other unspecified means. Continued platform use constitutes acceptance, meaning users who miss a notice may inadvertently agree to materially different terms. Users who disagree with changes must stop using the service, with no option to negotiate or maintain prior terms.
ConductAtlas has identified this type of provision across 63 platforms. See the full comparison.
No. ConductAtlas is an independent monitoring service. We are not affiliated with, endorsed by, or sponsored by Substack.