Microsoft Outlook is described as 'Manage emails, calendars, contacts, and tasks with an intuitive interface. Features smart inbox, file management, and third-party app integration' and is a very popular Email Client in the office & productivity category. There are more than 100 alternatives to Microsoft Outlook for a variety of platforms, including Windows, Mac, Linux, Android and iPhone apps. The best Microsoft Outlook alternative is Thunderbird, which is both free and Open Source. Other great apps like Microsoft Outlook are K-9 Mail, Evolution, eM Client and Betterbird.
Modern open-source email client supporting unified inbox, IMAP/SMTP, Gmail and Outlook with OAuth2, conversation threading, rich text TipTap composing, CardDAV contact sync, tracking removal, dark mode, color themes, vim-style shortcuts, and a detachable window.
The powerful, full-featured Personal Information Manager for Windows offering Email, Synchronization, Portability, Network support, Android and iOS versions.
A secure, cross-platform email client with a unified inbox, built-in PGP encryption, and optional AI. Use powerful AI when you want it or turn it off completely. Your email, your control.
KMail is the email component of Kontact, the integrated personal information manager of KDE. Kontact is a personal information manager and groupware software suite for KDE. It supports calendars, contacts, notes, to-do lists, news, and email.
This is a very integrated suite of programs offering all the functionality of Outlook. Native to KDE's Plasma desktop environment.
BlueMail is a modern, mobile first, powerful Email management tool with a sleek design, unified inbox and support for all your accounts: IMAP,Exchange,POP3.
much lighter, faster more responsive than outlook both in windows and Android. vivid and vibrant colors and ergonomic menu
Mailpile is a modern, fast web-mail client with user-friendly encryption and privacy features. The development of Mailpile is funded by a large community of backers and all code related to the project is and will be released under an OSI approved Free Software license.
TypeApp is an all-free, beautifully designed, universal email app, capable of managing unlimited number of mail accounts from various providers, allowing for smart push notifications while enabling personalization across multiple email accounts.
Transform your email inbox into a collaborative workspace with Spike. Enjoy integrated chat-like emails, tasks, collaborative notes, and group projects. Seamlessly manage multiple accounts, organize priorities, and schedule meetings across devices.
Brings all of my communications into one place. Also allows for easier sending, saving, and sharing of files shared amongst my teams.
Keep track of your busy schedule and share it with others using Calendar. Create separate calendars — one for home, another for school, a third for work, and so on. See all your calendars in a single window or choose to see only the calendars you want.
it's a calendar app not a email client!
Apple Calendar is a Calendar. It's a minimal part of what Outlook mail client provides.
outlook its not just calendar
Sylpheed is a simple, lightweight but featureful, and easy-to-use e-mail client (mailer, MUA).
Hong Kong SAR China
Estonia
EU
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Germany
United States
Israel
Japan
Tricky to configure. Does not speak MAPI, but many Cloudservices. I was not successful to synchronize OwnCloud