The Best Open Source Microsoft Outlook AlternativesTop Email Clients & Calendar Apps like Microsoft Outlook in 2023
Thunderbird is a free, open source, cross-platform e-mail, news and instant messaging client. The project strategy is modeled after Mozilla Firefox.
- - Thunderbird is the most popular Windows, Mac & Linux alternative to Microsoft Office Outlook.
- - Thunderbird is the most popular Open Source & free alternative to Microsoft Office Outlook.
Comments about Thunderbird as a Alternative to Microsoft Office Outlook
Thunderbird is best that other application listed here and GUI is also nice5
I transitioned all ove my computers from Windows to Linux. I had 4 computers so I used four different distributions with different linux bases, Debian and Arch. Thunderbird worked perfectly. The email client is awesome, I think they should devote more development efforts to calender and task management integration.2
The interface is just impossible for many people to use.13
I would rather Thunderbird over Outlook because it's open source.0
It can access email server just as outlook1
K-9 is an open source email client for Android with multi-folder sync, email signatures, Bcc-to-self, return-address configuration, keyboard shortcuts, Exchange Support, message flagging, IMAP deletes, saving attachments, configurable notifications and more.
- - K-9 Mail is the most popular Android & Android Tablet alternative to Microsoft Office Outlook.
K-9 Mail Features
Comments about K-9 Mail as a Alternative to Microsoft Office Outlook
Not the prettiest, but it's open source (trustworthy), free, privacy-respecting and very functional. My go-to Android email client. I cannot hesitate less in recommending it.4
Deletes e-mail from the server even when underground in NYC subway. Makes life so easy to delete e-mails while on the train When surfacing, K-9 syncs with the server and POOF....those unwanted e-mails are gone from the server.1
Evolution is a personal information management application that provides integrated mail, calendaring, address book and task list functionality. Evolution supports a wide range of industry standard data formats and network protocols for information exchange, with an emphasis on...
Comments about Evolution as a Alternative to Microsoft Office Outlook
It runs on Linux and you still have content if you are offline.1
Fast and User friendly. Light-weight and classic menus really give a touch of old classic office 2003. Easy integration of mails especially exchange mails without facing any bottlenecks.1
This would be the best alternative, except that it requires the Gnome desktop, so users of other desktop environments need to look elsewhere.-1
I've found it better than thunderbird and it can work with exchange just with one free plugin0
Support for EWS allows me to connect to exchange and get all the benefits like contacts and calendar I wouldn't so easily get on Thunderbird. Also it nicely integrates with the built in Ubuntu calendar as well which is a big plus.1
Boost your productivity and send better email with Mailspring, a beautiful, fast email client for Mac, Windows, and Linux. Mailspring is free to use and an optional pro version adds read receipts, send later, reminders and more.
Comments about Mailspring as a Alternative to Microsoft Office Outlook
Since Thunderbird is still bloated and overcomplicated for me on Linux, I'm using Mailspring for the moment. It's good, the interface is nice and it has plenty of features.0
Speed of work, good connection to the mail server, speed search.0
Beautiful theme options with custom designed themes available. I tried thunderbird a few times but always came back to mailspring. I LOVE the "views" feature that shows you how many times an email was opened and if it was forwarded by the recipient!0
FairEmail is a privacy-focused email client with a setup wizard that helpfully walks you through the steps to use it with any email provider. There are many privacy settings including encryption via OpenPGP and S/MIME and reformatted emails to avoid phishing.
Comments about FairEmail as a Alternative to Microsoft Office Outlook
open source, secure, regularly updated1
Geary is an email application built around conversations, for the GNOME 3 desktop.
Comments about Geary as a Alternative to Microsoft Office Outlook
Beatiful frontend Stable working Advanced features1
Claws Mail is an email client (and news reader), based on GTK+, featuring
Quick response Graceful, and sophisticated interface Easy configuration, intuitive operation Abundant features Extensibility Robustness and stability.
Claws Mail Features
Comments about Claws Mail as a Alternative to Microsoft Office Outlook
Claws Mail is email only, does not have many of the features of Outlook. Displaying HTML mail is sketchy at best.-2