S
SFirefox Relay vs MySudo
Pricing, features, platforms and who each one suits — side by side.
F
Choose Firefox Relay if…
- you want the lower entry price ($0.99/mo vs $1.99/mo)
- you want open source you can self-host or audit
- you work on Web
- you're in its core audience: privacy-conscious individuals, firefox users
M
Choose MySudo if…
- you're in its core audience: privacy-conscious online shoppers, people who manage several online identities
Side by side
Feature Firefox Relay MySudo
Pricing modelFreemiumFreemium
Starting price$0.99/mo$1.99/mo
Free plan
Free trial
API
Open source
PlatformsWeb, ChromeChrome
CategoryEmail & phone aliasesPrivacy & virtual cards
CompanyMozillaAnonyome Labs
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
M MySudo
- Up to nine virtual cards, one per Sudo identity
- Custom name and billing address on each card
- Close a card after a single purchase
- Separate Sudo identities for travel, family and other roles
- Browser extension to autofill Sudo details at checkout
- Desktop app for accessing Sudo information
- Bundled VPN and data-leak checks (MySudo Reclaim)
Their home pages
What each vendor shows first: the pitch, the plans and the sign-up.
Firefox Relay · relay.firefox.com
MySudo · anonyome.comWhat you'd pay
The cheapest plan that fits, per month, billed yearly where the plan offers it.
Work it out for your team
- Firefox RelayEmail protection$0.99/mo
- MySudoSudoGo$1.67/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)
MySudo
SudoFreeFree
SudoGo$1.99/mo or $1.67/mo billed yearly ($19.99/yr)
SudoPro$4.99/mo or $4.17/mo billed yearly ($49.99/yr)
SudoMax$14.99/mo or $12.50/mo billed yearly ($149.99/yr)
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
MySudo
- Up to nine virtual cards at a time
- Name and billing address can be set per card
- Cards can be closed after one use
- Issued by an FDIC-member bank on the Mastercard network
- Limit of nine virtual cards, one per Sudo
- Purchases that need ID checks still require your legal name
More comparisons
Other options to consider
SS
Free, from $3/mo
S
Open-source email aliases to hide your real address and block spam
Email & phone aliasesFree planAPIOpen source
A
AOpen-source email aliases that forward to your inbox and hide your real address
Free, from $1/mo
A
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
TT
Free, from $5/mo
T
Disposable temporary email addresses to avoid spam and protect your inbox
Temporary emailFree planAPI
G
GFree disposable email addresses to keep spam out of your real inbox
Free, from $0.83/mo
G
Free, from $0.83/mo
G
Free disposable email addresses to keep spam out of your real inbox
Temporary emailFree planAPIOpen source
1
11
Free
1
Free disposable email address that expires after 10 minutes, no signup
Temporary emailFree plan
P
PVirtual card numbers that lock to merchants and cap spending for US shoppers
Free, from $5/mo
P
Free, from $5/mo
P
Virtual card numbers that lock to merchants and cap spending for US shoppers
Privacy & virtual cardsFree planAPI
Facts from each vendor's public pages, prices checked Nov 8, 2026. Editorial policy