Thunderbird is a free, open source, cross-platform e-mail, news and instant messaging client. The project strategy is modeled after Mozilla Firefox.
Thunderbird vs Mailspring opinions
Thunderbird is free, stores nothing in a cloud service, so you control your email and the storage of your personal data. It supports encryption (natively, now) and with plugins is able to work with GMail and Exchange accounts without giving all your info to those behemothim. Easily customized mail rules allow you to route mail easily where you want it, and even without plugins it can easily protect against unwanted attachments, etc.
Microsoft Outlook, part of the Microsoft Office Suite (not to be confused with Microsoft Outlook Express), is a personal information manager that lets you manage your e-mail, calendar, contacts, and tasks.
Mailbird helps individuals and businesses manage emails in one place. This allows you to simplify your workflows. Therefore, spend more time on important tasks. Moreover, 9 in 10 of our customers describe our interface as “intuitive” and beautiful.
Mailbird vs Mailspring opinions
Less buggy, better UX and UI
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.
Postbox is an email application that helps you organize your work life and get stuff done.
eM Client is a full featured e-mail client with a modern and easy to use interface. eM Client also offers calendar, tasks, contacts, notes and chat.
Bring your workspace together into one unified app. It’s everything your team has been looking for in a productivity and messaging app, but easier, and all with your email. Welcome to the shortest path to done.
Spike vs Mailspring opinions
Spike offers no POP3 or IMAP. This is not a email client and should not be an alternative to e-mail clients.
Shift is an email client that makes navigating between Mail, Calendar, Drive + your favorite Apps & Extensions easy (for Gmail, Outlook.com - Office 365 & Hotmail).
LucaMail is an open source, cross-platform email client. LucaMail is developed to provide cross-platform alternative to Email Clients that are really exists. LucaMail focuses on modern technologies as well as maintaining a user-friendly UI.