Mailspring Alternatives for macOS

A free an open-source email client developed openly by the Mozilla Foundation and the community. Thunderbird is easy to setup and customize and supports POP and IMAP. The email client comes with all features needed to search, filter, write and manage emails, but also have builtin support for live chat between contact and RSS/Atom feed reader.

Mailbird is a desktop email client with an easy to use and intuetive interface. With Mailbird you can save time managing multiple accounts with the best email client for Windows and macOS.

Microsoft Outlook is a freemium personal email service and email client created by Microsoft. Microsoft Outlook does not scan your email for the purpose of serving you ads. The Microsoft Outlook email client allow you to be productive and stay connected from your home, on the go, and everywhere in between. Microsoft Outlook also integrates well with other Microsoft service allowing you to reach an eco-system of productive apps from within your mail client, be it in the browser or natively on your computer or mobile device.

Apple Mail is email client built specifically for the Apple eco-system. You can use Apple Mail on your mobile iOS device or your macOS desktop or laptop. It provides all the features needed to communicate effectivley via email, such as view and manage your favorite mailboxes right in the Mail sidebar, search for emails, it's easy to see which mailboxes are being searched and quickly select different mailboxes, easily view and sort messages in column layou and quickly open and use tabs in the Mail window.