The FSF is the Free Software Foundation which is a nonprofit with a worldwide mission to promote computer user freedom, they defend the rights of all software users.
Here are some recommendations from The FSF:
- Pick a mail service located in a country that won’t cooperate with governments that you’re particularly concerned about privacy from.
- Avoid using LinkedIn, which fishes for people’s email contact lists.
- If your mail service and your search engine are run by companies that don’t cooperate, neither of them can correlate your searches with your mail contents. (A spy agency could still do so, if the two companies are in the same country or in countries that cooperate in massive surveillance.) Thus, don’t use both Gmail and other Google services such as web search.
Some of these services are gratis, but that’s a separate issue. Recall that “free software” refers to freedom, not price.
- Posteo: Aims to be fully compliant with LibreJS’s standards, but some scripts cause warnings. It does not work without JS. Credit card payments do not work.
- Kolab Now: Swiss based paid service focused on ensuring your privacy. Highly resistant to PRISM and similar programs. Runs on free software. Currently becoming LibreJS compliant.
- Safe-mail.net: Signup and Login possible with LibreJS enabled. Select the “Traditional” interface for webmail use. Mail server details also available for mail clients.
- VFEmail (uses google syndication, and captcha – both non-free): After registering, you can use mailserver configuration details and use a mail client.
These are systems either currently under review, or undergoing a status change.
- Disroot: Sign up needs JS.
- Autistici/Inventati (A/I): Sign up needs JS. They are working on becoming LibreJS compliant, but no ETA on this yet.
- Hushmail: The site doesn’t load without JS.
- mailbox.org: JS needed to register or use the system.
Mailoo.org: Explicitly states it runs on free software. Currently French only – would appreciate help translating(registrations were closed as of 2017/01/25).Mailo.com
- ProtonMail: JS needed to register or use the system.
- Tutanota: Looks promising – they’re working on becoming LibreJS Compliant.
- Unseen: The site doesn’t load without JS.
Systems we’ve investigated and found wanting.
- FastMail: Sign up, sign in, and webmail all work smoothly. This is a paid service with a 60-day free trial. – UPDATE: was notified that this is not the case.
- Mail.Ru: Sign up, sign in, and webmail all work smoothly. BEWARE though – it is almost certainly under governmental surveillance, and likely does not respect privacy.
- Yahoo! Mail: works without JS apparently, but you need JS enabled to create a yahoo account
- Yandex Mail: You can register and sign in with LibreJS enabled, but not send mail in the no-js interface. Also: it looks to be Russian based, so almost certainly under surveillance.
Systems that don’t fit conveniently into any category, but we’ve reviewed or processed them.
- Mail-in-a-Box is an easy-to-deploy GNU/Linux mail server so you can run your own webmail.
- mailcow is a docker based GNU/Linux mail server.
Read the full article: Free Software Webmail Systems