Firefox Relay review
Updated October 12, 2026 · ShieldCue Editorial Team
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Our verdict
Firefox Relay differs from a full connection tool because it masks contact details instead of network traffic. It forwards emails, calls and texts to you while hiding your real address and number, which suits people who want less spam and more control when joining new services.
Key facts
- Best for
- Everyday email and phone masking for private contacts
- Money-back period
- 30 days (Source, checked September 26, 2026)
- Jurisdiction
- US (Source, checked September 26, 2026)
- Platforms
- Browser extension, Web dashboard, Other browsers and mobile devices (Source, checked September 26, 2026)
- Owner
- Mozilla Corporation (Source, checked September 26, 2026)
- Legal entity
- Mozilla Corporation (Source, checked September 26, 2026)
- Headquarters
- United States (Source, checked September 26, 2026)
- Support channels
- Help-centre, Community (Source, checked September 26, 2026)
- Pricing model
- Free
- Official website
- relay.firefox.com
Privacy tools
- Free plan
- Yes (Source, checked September 26, 2026)
- Free plan limits
- With the free service, you can create up to 50 random email masks and no phone number masks (Source, checked September 26, 2026)
- Platforms
- Browser extension, Web dashboard, Other browsers and mobile devices (Source, checked September 26, 2026)
- Logging policy
- Email content is not read or stored beyond delivery and is deleted within 3 days if undeliverable; IP address kept in server logs for 90 days; Twilio deletes text message records after 7 days; call content is not monitored or stored; interaction data can be opted out with Do Not Track. (Source, checked September 26, 2026)
- Jurisdiction
- US (Source, checked September 26, 2026)
- Open source
- Yes (Source, checked September 26, 2026)
- Legal entity
- Mozilla Corporation (Source, checked September 26, 2026)
- Headquarters
- United States (Source, checked September 26, 2026)
- Support channels
- Help-centre, Community (Source, checked September 26, 2026)
- Pricing model
- Free
Secure email
- Free plan limits
- With the free service, you can create up to 50 random email masks and no phone number masks (Source, checked September 26, 2026)
- Jurisdiction
- US (Source, checked September 26, 2026)
- Custom domains
- Yes (Source, checked September 26, 2026)
- Open source
- Yes (Source, checked September 26, 2026)
- Legal entity
- Mozilla Corporation (Source, checked September 26, 2026)
- Headquarters
- United States (Source, checked September 26, 2026)
- Support channels
- Help-centre, Community (Source, checked September 26, 2026)
- Pricing model
- Free
Identity protection
Apps and profiles
- Elsewhere
- WikidataWikipediaXLinkedIngithub.com
Pros and cons
Pros
- Creates random email masks that forward messages to your true inbox
- Provides a masked phone number for calls and texts you can answer privately
- Offers a personal domain for creating tailored masks wherever you are
- Removes common trackers and filters promotional messages from forwarded mail
Cons
- Covers email and phone masking rather than full network protection
- Relies on a dashboard and extension tools to manage every mask
Who it suits
- New account creators wanting private contact details
- Shoppers and diners asked for details on the spot
- Inbox owners wanting fewer trackers and promotions
Who should look elsewhere
- People seeking full network encryption
- Users wanting a single address without forwarding
How Firefox Relay compares
Where Firefox Relay is available
- Available
- Austria, Belgium, Bulgaria, Canada, Croatia, Cyprus, Czechia, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malaysia, Malta, Netherlands, New Zealand, Poland, Portugal, Romania, Singapore, Slovakia, Slovenia, Spain, Sweden, Switzerland, United Kingdom, United States
Countries from the brand (Source, checked September 26, 2026)
Frequently asked questions
What does Firefox Relay provide?+
Firefox Relay provides random email masks and a masked phone number that stand in for your real details. You share the masks with websites, apps, stores or restaurants. Messages, calls and texts sent to the masks reach your true inbox and phone.
How does email and phone masking work?+
You use a mask any time someone asks for your email or phone number. Relay forwards the incoming emails, calls and texts to you. Senders never see your real address or number, and you control the masks from a central dashboard.
What is the personal Relay domain for?+
The personal Relay domain lets you invent masks on the spot with words you choose. A restaurant visit could use one label, while shopping could use another. Each tailored mask still forwards to your real inbox.
Can you reply without revealing your identity?+
You can answer forwarded emails and texts directly through the masked identities. Your replies go out without exposing your real email address or phone number. Relay also strips common trackers and can hold back promotional messages.
Which company is behind Firefox Relay?+
It operates as part of the Firefox apps and services family. The wider group also maintains the browser extension and web dashboard used for masking. Reviews on the extension page credit the Firefox team for building the privacy tool.
Sources
- github.com/mozilla/fx-private-relay checked September 26, 2026
Backs: Open source
“License: MPL 2.0”
- relay.firefox.com checked September 26, 2026
Backs: Pricing model
“Everyone gets 5 email masks for free. But with Relay Premium, you can generate as many masks as you need”
- relay.firefox.com/faq checked September 26, 2026
Backs: Platforms, Support channels
“Yes, you can generate Relay masks on other browsers or mobile devices simply by logging in to your Relay dashboard.”
- mozilla.org/about/legal/terms/subscription-services checked September 26, 2026
Backs: Custom domains, Free plan, Free plan limits, Headquarters, Jurisdiction, Legal entity, Money-back period, Owner
“With the paid subscription, you can create one phone number mask, an unlimited number of email masks, and you have the option to create a custom subdomain for your email masks.”
- mozilla.org/privacy/subscription-services checked September 26, 2026
Backs: Logging policy
“We do not read or store the content of any of your messages... your IP address is temporarily collected as part of our server logs for 90 days... Mozilla has set the Twilio service to delete its...”
Compiled from 5 source pages, checked October 13, 2026. We did not open an account.
Not confirmed yet: Monthly price, Long-term plan price, Devices, Server countries, No-logs audit.