# Private and open-source alternatives to Outlook.com

1. [Forward Email](https://privacyratings.com/email-providers/forward-email/) (our pick): A (93/100). Open-source email service with encrypted mailboxes, custom domains, and IMAP, POP3, SMTP, CalDAV and CardDAV on every paid plan.
2. [mailbox.org](https://privacyratings.com/email-providers/mailbox-org/): C (70/100). Paid email, calendar and office service from Berlin, Germany, with built-in PGP encryption and support for custom domains.
3. [StartMail](https://privacyratings.com/email-providers/startmail/): C (66/100). Paid email service from the Netherlands with built-in PGP encryption, unlimited aliases and custom domains.
4. [Kolab Now](https://privacyratings.com/email-providers/kolab-now/): C (64/100). Paid email and groupware service from Apheleia IT in Switzerland, built on the open-source Kolab platform, with calendars, contacts, files and video calls.
5. [Proton Mail](https://privacyratings.com/email-providers/protonmail/): C (64/100). End-to-end encrypted email service from Switzerland, with apps for web, Android, iOS and desktop.
6. [CounterMail](https://privacyratings.com/email-providers/countermail/): C (62/100). Paid email service in Sweden that encrypts mail with OpenPGP and stores it encrypted. New registrations are closed.
7. [Posteo](https://privacyratings.com/email-providers/posteo/): C (62/100). Paid, ad-free email service from Germany that runs without collecting names or addresses and accepts anonymous payment.
8. [Tuta](https://privacyratings.com/email-providers/tuta/): C (61/100). End-to-end encrypted email and calendar service from Germany, with open-source apps for web, desktop and mobile.
9. [Disroot](https://privacyratings.com/email-providers/disroot/): D (59/100). Volunteer-run platform from the Netherlands offering email and other open services.
10. [Riseup](https://privacyratings.com/email-providers/riseup/): D (59/100). Email, mailing list and VPN service run by an autonomous tech collective in Seattle for activists and social movements. Accounts need an invite, and the service is funded by donations.
11. [Purelymail](https://privacyratings.com/email-providers/purelymail/): D (55/100). Low-cost email hosting from the United States with custom domains, standard protocols and mail stored encrypted with the user's password.
12. [Mailfence](https://privacyratings.com/email-providers/mailfence/): D (54/100). Email service from Belgium with built-in OpenPGP encryption and signing, plus calendar, contacts and document storage.
13. [Infomaniak Mail](https://privacyratings.com/email-providers/infomaniak-mail/): D (53/100). Email service from Swiss company Infomaniak, with free ik.me addresses and paid hosting for custom domains, plus web and mobile apps.
14. [Fastmail](https://privacyratings.com/email-providers/fastmail/): D (50/100). Paid email service from Australia with custom domains and standard protocols.
15. [Runbox](https://privacyratings.com/email-providers/runbox/): D (49/100). Paid email service from Norway with custom domain hosting, standard protocols and an open-source webmail app.

Source: https://privacyratings.com/alternatives/outlook-com/