Best Open Source E-Mail-Server

  • ZIMBRA. Zimbra is an enterprise-class email, calendar and collaboration solution built for the cloud, both public and private.
  • OPEN-EXCHANGE.
  • HORDE.
  • SQUIRRELMAIL.
  • SCALIX.

Is iRedMail free?

With iRedMail, you can deploy an OPEN SOURCE, FULLY FLEDGED, FULL-FEATURED mail server in several minutes, for free.

Is iRedMail open-source?

iRedMail offers a built-in and third-party spam and antivirus protection with support of SpamAssassin, ClamAV, SPF, DKIM, and built-in messages quarantine. iRedMail comes in a free open-source edition and a pro edition with an advanced admin panel for enterprise users.

Is Zimbra open source?

Zimbra Collaboration Open Source Edition With the release of Zimbra Collaboration 8.5, Zimbra officially moved to Open Source Initiative-approved licenses. The Zimbra Open Source Edition Web Client Code is released under the Common Public Attribution License, version 1.0 (CPAL v. 1).

Is iRedMail safe?

iRedMail focuses on privacy, to make sure all your data are protected on your own servers, and the best security practices are enabled by default forcing all users to use mail services through secure connections (POP3/IMAP/SMTP over TLS, webmail with HTTPS).

What is open source email?

Tutanota is the secure open source email alternative to mainstream services with a clear focus on privacy, security and ease-of-use. All Tutanota apps are Libre software to provide an open source email alternative to Gmail, Yahoo, GMX and others.

What is the best open source email server?

Zimbra is the most popular opensource mail server and used millions of people. Zimbra is an enterprise suitable email server and client solution. This is mail solution is cloud ready for both public and private.

What is the best open source calendaring solution?

DCS can even be used as a “contacts server” using the CardDAV protocol for remote vCard address book storage. After DCS, DAViCal is the leading open source calendaring solution. As the name suggests, it too uses CalDAV as the connection protocol, but it is also backwards-compatible with WebDAV.

Should I host my own Calendar Server?

While self-hosting your own calendar server is not for the uncommitted, it’s perhaps the best way to ensure that your personal calendar is easily synced across all of your devices using only open source tools that you trust. Two popular options in this space include Baïkal and DAViCal.

What is an email server?

What is an email server? A mail server is a software package that regulate sending and receiving emails using email protocols over the internet. Mostly, we are using several email services like Gmail, Outlook and ProtonMail. However, enterprise often require to use their infrastructure services.