Kube
Kube is a modern communication and collaboration client built to just work.
20 Alternatives To Kube
Airmail
Airmail is a lightweight and lightning fast mail client for Mac.
BlueMail
BlueMail is an email management app for Android, iOS, and Windows.
Canary Mail
Privacy-aware email app for Mac & iOS
Claws Mail
Claws Mail is an email client (and news reader), based on GTK+, featuring Quick response
Evolution
Apps/Evolution - GNOME Wiki!
Franz
Franz is your messaging app for WhatsApp, Facebook Messenger, Slack, Gmail, Telegram and many many more.
Kiwi for Gmail
Dedicated Gmail client with clean integration of Google Calendar, Contacts, Google Drive, and…
Mailspring
Mailspring is a mail client for Mac, Windows and Linux.
Mia for Gmail
A desktop email client for your Mac, without a browser !
Nylas Mail Lives
Nylas Mail Lives is a fork of Nylas Mail.
Outlook
Organize your world. Outlook’s email and calendar tools help you communicate, stay on top of what matters, and get things done.
Rambox
Free, open source and cross platform messaging and emailing app that combines common web…
Ripcord
A desktop chat client for Discord and Slack
Shift
Shift is the ultimate email client for managing Mail, Calendar, Drive, Slack, Asana, Jira, Evernote, and all your other favourite apps
Spark
Spark helps you take your inbox under control. Instantly see what’s important and quickly clean up the rest. Spark for Teams allows you to create, discuss, and share email with your colleagues
Station
Station unifies all your work tools in one neat & productive interface.
TypeApp
TypeApp - The best Android and iOS email app ever created for mobile devices. Fast, simple and easy, TypeApp is the best email app for Android and iOS
Wavebox
Bringing the Gmail & Google Inbox experience to your desktop in a neatly packaged app
Zoho Mail
Zoho Mail is a webmail service built with the needs of a modern business in mind.
eM Client
eM Client is a Windows-based email client for sending and receiving emails, and managing calendars, contacts and tasks.