Five free MS Outlook alternatives you can try to manage your emails

Aaruni Arora
Aaruni Arora

Updated On - February 27, 2024

Summary: MS Outlook, along with being one of the most favored email clients, is also quite expensive. Hence, often, people look for its alternatives. Mozilla Thunderbird, Opera Mail, etc., are some of its known substitutes that people make use of. In this blog, we will check out some of the prominent alternates of MS Outlook and discuss a professional tool Recoveryfix for MBOX to PST converter.

MS Outlook is one of the most popular email clients because of its advanced features and user-friendly interface. It is mainly used to send and receive emails through Microsoft Exchange Server, though it also provides contact, email calendar and task management facilities. It has a broad user base but often people feel like it is too expensive. Fortunately, there are plenty of free alternatives to MS Outlook created by open-source groups.

Most commonly, these email clients save their files in MBOX file format (in contrast to Outlook, which stores its files in its exclusive data format known as PST format).

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In a situation where the MBOX file needs to be converted into PST format, it is recommended to use the Recoveryfix MBOX to PST converter. It allows you to convert multiple MBOX files or folders without any size limitation.

Mozilla Thunderbird

Mozilla Thunderbird is an open-source email client that stores all the mailbox data in MBOX file format. It is a cross-platform email client that operates on Linux, Windows, and Mac. Thunderbird can be easily configured and customized as claimed by Mozilla. Thunderbird offers various features, such as,

  • Message management
  • Advanced spam filtering using a Bayesian spam filter.
  • It supports POP, IMAP, S/MIME, etc.
  • Automated linking of big files.
  • It offers TLS/SSL connections to IMAP and SMTP servers.

You can obtain further information from

Thunderbird - a free MBOX email application from Mozilla Opera Mail

Opera Mail

Although many people are familiar with the Opera browser, few know about Opera Mail. It used to be a built-in element of Opera Browser from version 2 to version 12. Opera Mail became a separate product after the release of Opera 15 back in 2013.
Opera Mail has various remarkable features like spam protection, a user-friendly interface, inline spell-checking, and threaded views. It allows you to open emails in multiple tabs simultaneously and has an automatic filtering option. You can learn more about it

A lightweight email client from Opera

Sea Monkey

Sea Monkey is a free open-source email client which uses the Gecko rendering Engine. Mozilla Foundation initially developed it, but seeing the popularity of Firefox and Thunderbird, they stopped developing it in 2005. It has been developed by The SeaMonkey council ever since. It provides many notable features like multiple account support, tabbed mail, blogs and news feeds, and junk mail controls. Learn more about it at

An all-in-one email application suite from Mozilla


Evolution, previously known as Novell Evolution and Ximian Evolution, is a complete system to manage user’s communications and personal information. It supports emails, calendar events, memos, tasks, etc. It offers facilities like folder search, multiple account support, automated spam filtering, and many other facilities. Previously supported Windows and Mac, it currently just supports Linux. Further information about Evolution is available at
Evolution - Personal information manager


Mulberry is an open-source email client marketed by Cyrusoft from approximately 1995 to 2005. After filing for bankruptcy in 2005, Cyrus Daboo, the original author, purchased rights to the source code and made them available for free. It is an exceptionally versatile email client initially developed for Linux, but now it is available for Mac, and Windows as well. The only downside of this email client is that it is a bit complicated to use. It manages numerous POP/IMAP accounts and calendars (both locally and on the server).
An open sources MBOX email client marketed by Cyrusoft


We’ve mentioned five free alternatives to MS Outlook to efficiently manage your emails as Outlook can be quite expensive for some users. Though the alternatives mentioned are helpful, certain situations may arise where you might need to shift to MS Outlook, and there’s no direct way to import MBOX files to Outlook directly. In such a situation, we will recommend using Recoveryfix for MBOX to PST software.

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