Proton Mail for Business vs Yahoo Mail
In short: Proton Mail for Business wins on privacy, Yahoo Mail wins on price, and Proton Mail for Business wins on features. The full comparison is below, last checked 25 October 2026.
Should you pick Proton Mail for Business or Yahoo Mail?
- Proton Mail for Business suits you best if you want encryption that means even the provider can't read your mail; your mail kept in Switzerland; and email from a company that doesn't make money from adverts.
- Choose Yahoo Mail if you want email without paying for it; a free plan before you pay anything; and 20 GB of storage.
| Feature | Proton Mail for Business | Yahoo Mail |
|---|---|---|
| Overall | 4.0 | 2.5 |
| Privacy | 4.5 | 0.0 |
| Price | 2.5 | 5.0 |
| Features | 4.5 | 4.0 |
| Cheapest plan | Mail Essentials $6.99 per user a month | Free (Mail Plus ad-free, 200 GB) Free; Plus £4.99 a month (2020 price) |
| Free plan | No | Yes, 20 GB |
| Storage | 15 GB | 20 GB |
| Your own domain | ✓ 3 | No |
| End-to-end encryption | ✓ Built in | No |
| Company based in | Switzerland | United States |
| Your data is kept in | Switzerland | United States and worldwide |
| Founded | 2014 | 1997 |
| Free trial | 30-day refund | Free |
| Funded by advertising | No | Yes, or its parent company is |
| Works in any mail app | With Proton Bridge on paid plans | ✓ IMAP and SMTP |
| Calendar and contacts | ✓ Yes | ✓ Yes |
| Aliases | Yes | Yes |
| Open-source apps | ✓ Yes | No |
| Sign up without ID | No | No |
| White label | No | No |
| Reader offer | None | None |
| Last checked | 22 October 2026 | 25 October 2026 |
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The key differences
- Cheapest plans: Proton Mail for Business Mail Essentials, $6.99 per user a month. Yahoo Mail Free (Mail Plus ad-free, 200 GB), Free; Plus £4.99 a month (2020 price).
- Proton Mail for Business has no free plan; Yahoo Mail has a free plan (20 GB).
- Space: Proton Mail for Business gives 15 GB of storage, Yahoo Mail 20 GB of storage.
- Proton Mail for Business keeps your mail in Switzerland, while Yahoo Mail keeps it in the United States and worldwide.
- The companies sit under different laws: Proton Mail for Business in Switzerland, Yahoo Mail in United States.
- On encryption, Proton Mail for Business encrypts mail end to end, whereas Yahoo Mail doesn't encrypt mail end to end.
- You can use your own domain with Proton Mail for Business, but not with Yahoo Mail.
- Mail apps: Proton Mail for Business works in other mail apps through Proton Bridge on paid plans; Yahoo Mail works in any mail app over IMAP.
- Yahoo Mail (or its parent company) makes money from advertising; Proton Mail for Business doesn't.
Proton Mail for Business and Yahoo Mail: your questions
Is Proton Mail for Business more private than Yahoo Mail?
Proton Mail for Business scores 4.5 out of 5 for privacy and Yahoo Mail 0. Proton Mail for Business gives you encryption that means even the provider can't read your mail, your mail kept in Switzerland and email from a company that doesn't make money from adverts.
Is Proton Mail for Business cheaper than Yahoo Mail?
Yahoo Mail costs nothing to start (Free; Plus £4.99 a month (2020 price)). Proton Mail for Business's cheapest plan, Mail Essentials, is $6.99 per user a month.
Can I use my own domain with Proton Mail for Business or Yahoo Mail?
Only Proton Mail for Business does (3 domains on its cheapest plan that allows one). With Yahoo Mail your address stays on its own domain.
Where is my email stored with Proton Mail for Business and Yahoo Mail?
Proton Mail for Business keeps it in Switzerland. Yahoo Mail keeps it in the United States and worldwide.
Can I use Proton Mail for Business and Yahoo Mail in Apple Mail or Outlook?
Proton Mail for Business works in other mail apps through Proton Bridge on paid plans. Yahoo Mail works in any mail app over IMAP.
Recent price changes
I haven't seen either change its price since I started checking on 22 October 2026.
The latest headlines: Proton Mail for Business news · Yahoo Mail news.
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How to switch
Moving between any two providers works the same way. Pick your two providers for the steps.