Firefox Relay Terms of Service by Mozilla

MozillaUpdated 9 Dec 2025

This document outlines the Terms of Service for Firefox Relay, a service provided by Mozilla that allows users to create email aliases to protect their primary email address. It details account requirements, privacy policies, service usage permissions, subscription options, payment and cancellation terms, and user responsibilities.

Firefox Relay Terms of Service

Version 1.4, effective Sept 16, 2022

Firefox Relay (the “Service”) allows you to keep your primary email address safe and private from online services by making unique, alias email addresses that allow you to send and receive emails without revealing your primary email address.

Please read these Terms of Service carefully because they explain important information about your use of the Service.

You’ll Need A Firefox Account

A Firefox Account is required to use the Service. To create a Firefox Account, you will also need to agree to the Terms of Service and Privacy Notice for your Firefox Account.

Your Privacy

Your Privacy: The Firefox Relay Privacy Notice explains what information is sent when you use the Service and how we handle and share that information.

Permissions Necessary to Provide the Service

Your Use of the Service: Mozilla gives you permission to use Firefox Relay according to these Terms of Service. This permission is only for your personal use. You may not transfer, sublicense, resell, or commercially exploit the Service. You also agree that your use of the Service will comply with Mozilla’s Acceptable Use Policy. You are solely responsible for the Content you transmit and the consequences.

You give Mozilla all rights necessary to operate the Service, including processing your email addresses, the aliases and alias labels you create and the emails you send and receive through the Service. We do not read or store the content of any of your messages. In the event that an email cannot be delivered to you, we will keep it on our servers and delete it after it has been delivered (in no event will we hold onto it for more than three days). If you use the feature to block promotional emails, the Service will check email headers to determine whether the email should be blocked.

The Service will only send email attachments up to 10 megabytes. Larger emails are deleted.

To learn more about how the Service works, you can see Mozilla’s source code.

Your Feedback and Suggestions: If you give Mozilla any ideas, suggestions, or feedback about Firefox Relay or the services you use with the Firefox Relay, you give Mozilla permission to use them for free and without any additional obligations.

Mozilla’s Intellectual Property: Neither Mozilla nor its licensors grant you any intellectual property rights in the Service that are not specifically stated in these Terms. For example, these Terms do not provide the right to use any copyrights, trademarks, or other distinctive brand features of Mozilla or its licensors. The Mozilla software is distributed under and subject to the current version of the Mozilla Public License, or other similarly permissive licenses.

Your Payment

We offer Firefox Relay as either a free service or a paid subscription service.

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This version is drafted for California. US contract and employment rules vary by state, so it will not transfer cleanly elsewhere. Tell GitLaw where the parties are and it adjusts the draft.

Jurisdiction
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United States of America
Document info
HTML document. Document created on Tue Nov 4th, 2025. Last updated on Tue Dec 9th, 2025.
This document is public
Licensed under CC BY 4.0 (Attribution).
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