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Privacy, Proxies & Anonymity62Email6Affiliate & Media Buying11Crypto23Productivity & Creators5

Firefox Relay vs SimpleLogin

Pricing, features, platforms and who each one suits — side by side.

FFirefox RelayFree · from $0.99/moVisit site
SSimpleLoginFree · from $3/moVisit site
VS
F

Choose Firefox Relay if…

  • you want a lower cheapest paid plan ($1.99 vs $4)
  • you want more phone numbers (1 vs 0)
  • you're in its core audience: privacy-conscious individuals, firefox users
S

Choose SimpleLogin if…

  • you need custom domains
  • you're in its core audience: privacy-conscious individuals, journalists and activists

Side by side

Feature Firefox Relay SimpleLogin
Free aliases510
Cheapest paid plan$1.99$4
Aliases on paid planUnlimitedUnlimited
Phone numbers10
Number countriesUS, CA, PR—
Custom domainsNoYes
Reply from aliasYesYes
PGP encryption—Yes
Open sourceYesYes
PlatformsWeb, ChromeWeb, iOS, Android, Chrome, API, Self-hosted
CompanyMozillaProton AG · since 2020
Full feature lists

F Firefox Relay

  • Random email masks that forward to your real inbox
  • Masked phone number that forwards calls and texts
  • Removal of email trackers from forwarded mail
  • Blocking of promotional emails while keeping receipts
  • Personal mozmail.com subdomain for instant masks
  • Anonymous replies to emails and texts
  • Dashboard to label, create and block masks
  • Browser extension for creating masks on any site

S SimpleLogin

  • Forwarding email aliases with reply and send from alias
  • Custom domains with catch-all aliases
  • On-the-fly aliases via subdomains and directories
  • PGP encryption of forwarded emails
  • Multiple mailboxes per account
  • Browser extensions for Chrome, Firefox, Edge, Safari
  • 2FA with TOTP and WebAuthn
  • Self-hosting with Docker

Their home pages

What each vendor shows first: the pitch, the plans and the sign-up.

Firefox Relay home page
F Firefox Relay · relay.firefox.com
SimpleLogin home page
S SimpleLogin · simplelogin.io

What you'd pay

The cheapest plan that fits, per month, billed yearly where the plan offers it.

Team sizeFirefox RelaySimpleLogin
1 person$0.99 Email protection$3 Premium
5 people$0.99 Email protectionno published plan
20 people$0.99 Email protectionno published plan

Work it out for your team

  1. Firefox RelayEmail protection$0.99/mo
  2. SimpleLoginPremium$3/mo

The cheapest paid plan with a published price that fits. Custom and sales-quoted plans aren't included.

All plans and prices

Firefox Relay

Limited email protectionFree
Email protection$1.99/mo or $0.99/mo billed yearly ($11.88/yr)
Email & phone protection$4.99/mo or $3.99/mo billed yearly ($47.88/yr)
Add VPN protection$6.99/mo billed yearly ($83.88/yr)

SimpleLogin

Free$0
Premium$36/year (about $3/mo) or $4 billed monthly

Strengths and limitations

Firefox Relay

  • Free tier includes 5 email masks and tracker removal
  • Source code is public on GitHub
  • Combines email and phone masking in one service
  • Browser extension rated 4.1/5 from over 1,250 reviews
  • Free plan is limited to 5 email masks
  • Premium tiers are waitlist-only
  • Premium is available only in certain countries
  • Not recommended for identity-verified emails or ones that need attachments

SimpleLogin

  • Free plan with 10 aliases and unlimited bandwidth
  • Fully open source and can be self-hosted
  • Aliases keep working after a subscription ends
  • Accepts PayPal, cards and cryptocurrency through a reseller
  • Free plan is limited to 10 aliases and 1 mailbox
  • No refunds
  • No family plan

More comparisons

Other options to consider

A
Addy.io websiteA

Open-source email aliases that forward to your inbox and hide your real address

Free, from $1/mo
A
Addy.io website
Free, from $1/mo
A

Open-source email aliases that forward to your inbox and hide your real address

Email & phone aliasesFree planAPIOpen source
T
Temp-Mail websiteT

Disposable temporary email addresses to avoid spam and protect your inbox

Free, from $5/mo
T
Temp-Mail website
Free, from $5/mo
T

Disposable temporary email addresses to avoid spam and protect your inbox

Temporary emailFree planAPI
G
Guerrilla Mail websiteG

Free disposable email addresses to keep spam out of your real inbox

Free, from $0.83/mo
G
Guerrilla Mail website
Free, from $0.83/mo
G

Free disposable email addresses to keep spam out of your real inbox

Temporary emailFree planAPIOpen source
1
10 Minute Mail website1

Free disposable email address that expires after 10 minutes, no signup

Free
1
10 Minute Mail website
Free
1

Free disposable email address that expires after 10 minutes, no signup

Temporary emailFree plan

Facts from each vendor's public pages, prices checked Nov 8, 2026. Editorial policy