Firefox Relay vs SimpleLogin (2026): which should you pick?
As of Nov 12, 2026, SimpleLogin grades higher than Firefox Relay: 2.4 against 2.2 out of 4.0.
Checked Nov 12, 2026 · graded Nov 12, 2026 by ToolGPA
Firefox Relay grades higher on ease of use. SimpleLogin grades higher on value for money and platforms. They get the same grade on the free plan and features.
Price, platforms and features side by side. The table says where each price was read and when.
Firefox Relay
Email and phone masks that forward to your real inbox
SimpleLogin
Open-source email aliases that forward to your own inbox
Which one is for you
Pick Firefox Relay if
- Fits if you want a throwaway address for a few sign-ups
- Works for people who already use Firefox and want masks built into it
Look elsewhere if
- Tight if you want more than 5 masks, as Premium shows no price and is waitlist only
- Not for you if you need to reply from a mask, as the free plan can't
- Watch out: Mozilla advises against masks for banks, doctors, lawyers and mail with attachments you must receive
- Watch out: Relay Premium is limited to listed countries, including the US, Canada, the UK and most of the EU
Pick SimpleLogin if
- Fits if you want a different address for every site you sign up to
- Works for people who already have an inbox and only want to hide it
Look elsewhere if
- Tight if you stay free, as it is 10 aliases and 1 mailbox
- Skip it if you need a mailbox of your own, since it only forwards to an inbox you already have
- Pricey if you want custom domains or catch-all, both Premium at $36 a year
- Watch out: there is no family plan and the listing says there are no refunds
How we grade them
| 2.2GPAFirefox RelayFair | 2.4GPASimpleLoginFair | |
|---|---|---|
| Value for money | CThe free plan is the only plan you can sign up for. Premium shows no price and a Join the Waitlist button, so there's no price on record. | BPremium is $36 a year, $3 a month, inside the cheaper quarter of email tools, which starts at $3.99 a month. Monthly billing is $4. |
| Free plan and trial | CFree for 5 email masks, the extension and tracker removal. Five masks is a cap you'll hit, and the free plan can't reply from a mask. | CFree covers 10 aliases, 1 mailbox, unlimited bandwidth and replies from an alias. You will hit the 10 quickly if you give every site its own. |
| Features | CEmail masks, a browser extension and tracker removal. Gaps: replies and promo blocking sit on Premium, and phone masking has no price shown. | CForwards and replies from aliases, with PGP on Premium. It does not host a mailbox, and custom domains and catch-all sit on Premium. |
| Ease of use | BNo store rating on record. You install the extension and click to make a mask, with nothing else to set up. | CNo store rating on record. You connect your real inbox and install the extension or app before it does anything. |
| Platforms and integrations | CWeb and a browser extension only, with no phone app, desktop app or integrations listed. | BWeb, iPhone, Android and browser extensions, plus Proton Pass features. No desktop app on the listing. |
| Best for | email masks from Mozilla | email aliases that forward to your inbox |
The GPA is the average of the five grades: an A is 4 points, an F is none. The full reasons are on each tool's page: Firefox Relay and SimpleLogin. How we grade
Where they differ
- SimpleLogin is open source and self-hostable, according to its own site.
- Firefox Relay also covers inbox filtering and ad and tracker blocking.
At a glance
| Firefox Relay | SimpleLogin | |
|---|---|---|
| Pricing | Free plan | Free plan |
| Starts at | Not published | $36 per year ($4 billed monthly) |
| Free plan | 5 email masks, the browser extension and removal of email trackers from forwarded mail. | 10 aliases, 1 mailbox, unlimited bandwidth, replies from an alias, browser extensions and mobile apps. |
| Free trial | None listed | None listed |
| Web | ||
| iOS | ||
| Android | ||
| Browser extension | ||
| Made by | Mozilla | Proton AG |
| Price read from | relay.firefox.com | simplelogin.io |
| Checked | Nov 12, 2026 | Nov 12, 2026 |
Worth knowing
Firefox Relay
- Premium and phone plans show no price and a Join the Waitlist button, so only the free plan can be signed up for.
- The free plan stops at 5 masks and cannot reply from a mask; masks go to your existing inbox.
- Mozilla advises against masks for banks, doctors, lawyers and mail with attachments you must receive.
- Relay Premium is limited to listed countries, including the US, Canada, the UK and most of the EU.
SimpleLogin
- The free plan stops at 10 aliases and 1 mailbox; custom domains and catch-all need Premium.
- It forwards to an inbox you already have and does not host a mailbox.
- There is no family plan, only a 30% reduction on extra subscriptions on request, and no refunds.
Key features
Firefox Relay
- Email masks
- Each mask forwards to your true address, and you can turn forwarding off for one mask without touching the rest.
- Browser extension
- An add-on creates a mask on a site's sign-up form. The homepage links the Firefox add-on, and masks can be made from the dashboard in other browsers.
- Tracker removal
- Common email trackers are stripped from forwarded mail, and this is included on the free plan.
- Promo blocking
- Premium can block promotional mail while still forwarding receipts and shipping notices. Blocking is not exact, so important mail can occasionally be caught.
- Anonymous replies
- Premium lets you reply to a forwarded email within 3 months of receiving it, and gives a custom mozmail.com mask domain.
- Phone masking
- A phone mask forwards calls and texts to your number and lets you reply to texts. The phone plan is a waitlist.
SimpleLogin
- Aliases per site
- Create an alias for each account so a breach or a spam list exposes that alias only. The free plan allows 10.
- Reply from the alias
- Answer forwarded mail without exposing your address. Starting a new email from an alias needs Premium.
- Custom domains and catch-all
- Premium lets you bring your own domains, set a catch-all rule, and use subdomains and directories or usernames.
- PGP encryption
- Premium can encrypt forwarded mail with your PGP key before it reaches your mailbox.
- Apps and extensions
- Extensions for Chrome, Firefox and Safari, iOS and Android apps, TOTP and WebAuthn sign-in, and Sign in with SimpleLogin.
- Proton Pass features
- Both plans include Proton Pass, with its premium features (vaults, 2FA authenticator) bundled into Premium.
Plans
Firefox Relay
Limited email protection$0
5 email masks, the browser extension and removal of email trackers.
Relay PremiumCustom
Unlimited masks, a custom mask domain, replies and promo blocking; no price shown, waitlist only.
SimpleLogin
Free$0
10 aliases, 1 mailbox, unlimited bandwidth and replies from an alias.
Premium$36
per year ($4 billed monthly)
Unlimited aliases and custom domains, catch-all, 5 subdomains, unlimited mailboxes and PGP encryption.
Ways to pay less
Firefox Relay
No public discounts listed.
SimpleLogin
- Education
Discounts for students and charities
The pricing page says it gives discounts or free Premium to educational staff and students, activists, journalists and charities, by email request.
Common questions
Which is cheaper, Firefox Relay or SimpleLogin?
As of Nov 12, 2026, Firefox Relay publishes no starting price, and SimpleLogin starts at $36 per year ($4 billed monthly).
Which has a free plan, Firefox Relay or SimpleLogin?
As of Nov 12, 2026, both Firefox Relay and SimpleLogin have a free plan.
Which platforms do Firefox Relay and SimpleLogin run on?
As of Nov 12, 2026, only SimpleLogin lists iOS and Android apps. Both list a web app and a browser extension. A platform missing from a listing is one its maker's pages did not mention.
More comparisons
How this page was made
- The verdict at the top follows a fixed rule. When both tools are in the same category and either is in our top three for it, the verdict follows that ranking: the higher-placed tool is our pick. The top three weigh who each tool suits as well as its grades, so a pick can go against the GPA. Otherwise the page does not pick one and says which grades higher: the higher GPA first; on a tie, the one with a free plan, then the one that starts cheaper in dollars a month, counted the same way for both; if they are still level, what the choice depends on.
- The grades are our own, from each tool’s review or report card. The GPA is their average.
- Prices, plans and platforms come from each tool’s listing. The table above says where each price was read and when.
- The differences and the answers to the questions are worked out from those listings.