Mozilla Accounts
Mozilla Accounts Terms of Service & Privacy Notices
Mozilla Accounts is a single sign-on service that lets users access Mozilla's suite of products (Firefox Sync, Mozilla VPN, Firefox Relay, Mozilla Monitor, Pocket, and others) across devices with one login.
Analyzed July 1, 2026
Key findings
Summary
Mozilla's terms and privacy notices are generally consumer-friendly, with end-to-end encrypted sync, clear data definitions, Do Not Track honoring, and defined user rights. Standard risk areas remain, including broad account termination discretion, an "as is" liability disclaimer with a $500 cap, and typical service-provider data sharing, but there is no evidence of data sale, arbitration, or aggressive tracking.
Category Breakdown
Mozilla collects account, technical, interaction, and location (country/city level) data, but sync data is end-to-end encrypted and Mozilla states it cannot decrypt it, with granular settings to control collection.
From: MOZILLA ACCOUNTS PRIVACY NOTICEThis encryption is end-to-end: your data is encrypted before it ever leaves your browser and can only be decrypted by another sync client with the encryption keys; Mozilla cannot decrypt this information.View source document
Data is shared with service providers, partners, and successors under contractual obligations, with no advertising partners or data sale language present, and Mozilla states it does not track users for targeted advertising.
From: WEBSITE PRIVACY NOTICEMozilla does not track users across third-party websites to provide targeted advertising.View source document
Uploaded content is licensed to Mozilla on a nonexclusive, royalty-free, worldwide basis solely to provide the Services, a standard operational license.
From: TERMS OF SERVICEBy uploading content, you hereby grant us a nonexclusive, royalty-free, worldwide license to use your content to provide the Services.View source document
Mozilla may suspend or terminate access at any time for broadly defined reasons including commercial viability, with reasonable notice efforts but no guaranteed appeal or refund process.
From: TERMS OF SERVICEWe may suspend or terminate your access to the Services at any time for any reason, including, but not limited to, if we reasonably believe: (i) you have violated these Terms, (ii) you create risk or possible legal exposure for us; or (iii) our provision of the Services to you is no longer commercially viable.View source document
No mandatory arbitration, arbitrator, or class-action waiver language appears; the document instead specifies California law as governing law, a court venue/governing-law clause.
From: TERMS OF SERVICEThese Terms are governed by the laws of the state of California, U.S.A., excluding its conflict of law provisions.View source document
Paid subscriptions are processed via third-party payment providers with billing records retained, but the core Terms document does not detail cancellation or refund specifics for auto-renewing plans.
From: MOZILLA ACCOUNTS PRIVACY NOTICEWhen you subscribe to services that require a paid subscription, your payment will be processed in accordance with the Mozilla Subscription Services Privacy Notice.View source document