Airmail is described as 'Lightweight mail client supporting multiple accounts, customizable actions, unified inbox, Smart Inbox filtering, privacy mode, and send later scheduling' and is a popular Email Client in the office & productivity category. There are more than 50 alternatives to Airmail for a variety of platforms, including Mac, Windows, Linux, Android and iPhone apps. The best Airmail alternative is Thunderbird, which is both free and Open Source. Other great apps like Airmail are K-9 Mail, Microsoft Outlook, Evolution and Spark Mail.
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.
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.
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.
Sylpheed is a simple, lightweight but featureful, and easy-to-use e-mail client (mailer, MUA).
Talanoa is the first inbox designed around people. Cut the noise, focus only on what matters.
Mac IMAP email client featuring keyboard control, Markdown email composition, advanced search capabilities, smart mailboxes, automatic signature handling, cryptographic options with OpenPGP/S-MIME, tagging, multiple notifications, and customizable layouts including widescreen.
The Bat! is a secure email client software, built to protect your correspondence against third-parties.
Mutt is a small but very powerful text-based mail client for Unix operating systems. Some of its features are: color support, message threading, MIME support (including RFC2047 support for encoded headers), PGP/MIME (RFC2015), various features to support mailing lists, including...
Mimestream combines your favorite Gmail features with the power of a native macOS app so you can move through your email effortlessly.
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.
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It is so different I had trouble adjusting. There is no snooze or swipe.