Yahoo Mail vs Firefox Relay
Firefox Relay wins on privacy, they tie on price and Yahoo Mail wins on features. Every fact below was checked on or before 25 October 2026.
Which should you choose?
- Yahoo Mail is the better pick if you want a mailbox that costs nothing; more space for your mail: 20 GB; and to read your mail in any app, such as Apple Mail, Outlook or Thunderbird.
- Firefox Relay is the better pick if you want a company that isn't funded by advertising and open-source apps anyone can check.
| Feature | Yahoo Mail | Firefox Relay |
|---|---|---|
| Overall | 2.5 | 2.5 |
| Privacy | 0.0 | 1.0 |
| Price | 5.0 | 5.0 |
| Features | 4.0 | Not rated |
| Cheapest plan | Free (Mail Plus ad-free, 200 GB) Free; Plus £4.99 a month (2020 price) | Premium $0.99 a month |
| Free plan | Yes, 20 GB | Yes, 5 aliases |
| Storage | 20 GB | Forwards only |
| Your own domain | No | Own subdomain only |
| End-to-end encryption | No | No |
| Company based in | United States | United States (Mozilla) |
| Your data is kept in | United States and worldwide | United States |
| Founded | 1997 | 2020 |
| Free trial | Free | Free plan |
| Funded by advertising | Yes, or its parent company is | No |
| Works in any mail app | ✓ IMAP and SMTP | No, its own apps only |
| Calendar and contacts | ✓ Yes | No |
| Aliases | Yes | Unlimited aliases |
| Open-source apps | No | ✓ Yes |
| Sign up without ID | No | No |
| White label | No | No |
| Reader offer | None | None |
| Last checked | 25 October 2026 | 25 October 2026 |
Want to add another? Open this in the compare tool.
How Yahoo Mail and Firefox Relay differ
- Yahoo Mail's cheapest plan is Free (Mail Plus ad-free, 200 GB) (Free; Plus £4.99 a month (2020 price)); Firefox Relay's is Premium ($0.99 a month).
- For free, Yahoo Mail gives you a free plan (20 GB), and Firefox Relay a free plan (5 aliases).
- Yahoo Mail comes with 20 GB of storage and Firefox Relay with no storage, as it forwards mail on.
- Your mail is stored in the United States and worldwide with Yahoo Mail, and in the United States with Firefox Relay.
- Yahoo Mail is based in the United States and Firefox Relay in the United States (Mozilla), so different privacy laws apply.
- Yahoo Mail works in any mail app over IMAP, and Firefox Relay only works in its own apps.
- Only Yahoo Mail is part of an advertising business.
- For extra addresses, Yahoo Mail has yes and Firefox Relay has unlimited aliases.
Questions people ask
Which is more private, Yahoo Mail or Firefox Relay?
Firefox Relay scores 1 out of 5 for privacy and Yahoo Mail 0. Firefox Relay gives you a company that isn't funded by advertising and open-source apps anyone can check.
Which is cheaper, Yahoo Mail or Firefox Relay?
Yahoo Mail costs nothing to start (Free; Plus £4.99 a month (2020 price)). Firefox Relay's cheapest plan, Premium, is $0.99 a month. Firefox Relay has a free plan too: 5 aliases.
Do Yahoo Mail and Firefox Relay work with my own domain?
No, neither lets you use your own domain, so your address stays on theirs.
Where do Yahoo Mail and Firefox Relay keep my email?
Yahoo Mail keeps it in the United States and worldwide. Firefox Relay keeps it in the United States.
Do Yahoo Mail and Firefox Relay work in other mail apps?
Yahoo Mail works in any mail app over IMAP. Firefox Relay only works in its own apps.
Recent price changes
No price changes for either since 25 October 2026. I check regularly and add any change here with its date.
The latest headlines: Yahoo Mail news · Firefox Relay news.
Not sold on either? Try these
Yahoo Mail vs mailbox.org · Firefox Relay vs mailbox.org · Yahoo Mail vs Posteo · Firefox Relay vs Posteo · Yahoo Mail vs Proton Mail · Firefox Relay vs Proton Mail
How to switch
Whichever you choose, the move follows the same steps. Pick your two providers for the steps.