K-9 Mail is described as 'K-9 is an open source email client for Android with multi-folder sync, email signatures, Bcc-to-self, return-address configuration, keyboard shortcuts, Exchange Support, message flagging, IMAP deletes, saving attachments, configurable notifications and more' and is a very popular Email Client in the office & productivity category. There are more than 25 alternatives to K-9 Mail for a variety of platforms, including Android, Windows, iPhone, Mac and iPad apps. The best K-9 Mail alternative is Thunderbird, which is both free and Open Source. Other great apps like K-9 Mail are Betterbird, Microsoft Outlook, Evolution and FairEmail.
Android email app focused on privacy and security, supporting JMAP, IMAP, and SMTP protocols, encrypted credentials, OpenPGP through OpenKeychain, unified inbox, conversation threading, offline mode, strong tracking protection, F-Droid distribution, no ads or Google dependence.
Engineered for iOS, macOS, and watchOS, this fast mail client supports multiple account types, custom actions, Smart Inbox filtering, unified inbox, privacy mode, email scheduling, snooze, third-party app integration, flexible personalization, and advanced workflow tools.
Italy
EU
No-frills, easy to use, easy to maintain Email client for Android based on the JSON Meta Application Protocol (JMAP).
GermanyEU
Email by Edison (formerly Email by EasilyDo) is a brand new, elegantly designed, universal mail app to manage unlimited mail accounts.
United States
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.
United States
Shortwave is an email app that takes the pain out of managing your inbox, making it effortless to stay organized, productive, and responsive.
United States
United States
AquaMail is an email app for Internet and Exchange mail, for Android 4.0.3 and higher.
BulgariaEU
Japan
myMail is the smart email app for managing all your accounts on iOS and Android.
Russia
Productivity-centered email application streamlines inbox management, uses AI for drafting responses, automates snippets, summarizes conversations, enables timely sends, integrates calendar and CRM, and includes collaborative features like live views and comments.
United States
Nylas Mail Lives is a fork of Nylas Mail that fixes many longstanding issues, improves the client experience, and is committed to publish new releases.
