Apps similar to Apple Mail include Thunderbird, which is free and open source. Other options are Proton Mail, Gmail, Tuta Mail and K-9 Mail. You're spoiled for choice with Email Clients like Apple Mail: we list more than 100 alternatives for the web, Windows, Mac, Android and iPhone.
TabMail is available as a standalone iPhone email client and an AI assistant add-on for Thunderbird. It works with existing Gmail, Outlook, iCloud and IMAP inboxes, offering suggested replies, conversational editing, email triage and chat with your inbox.
Canada
Mailgnificent is a privacy-focused email client that brings all your mailboxes into one unified inbox without ever storing your mail contents.
Germany
EU
Easymail is an Android email client that shows your existing mailbox as chat conversations. Each thread becomes a single conversation with one bubble per message. Quoted text and signatures are folded away automatically, and the reply bar sits at the bottom of the screen, as in...
ItalyEU
Suzume Mail is a focused Mac email client for people who work in long conversations. It keeps the thread visible, adds fast keyboard navigation, and gives privacy-minded users a calmer native desktop workflow.
Convey is an email application built around conversations, for the GNOME desktop. It allows you to read, find and send email with a straight-forward, modern interface.
United Kingdom
Encrypted email and chat app using device-generated OpenPGP keys, with automatic encryption for users and recipients whose public keys are available. Includes groups, media, voice notes, stickers, self-destruct timers, view-once messages, and encrypted voice and video calls.
black.com is a privacy-focused email service that provides zero-access encryption. It is an Austrian-based company, with Swiss-based infrastructure. Emails are zero-access encrypted with a password-derived key.
AustriaEU
China
AI email client that sorts your mail into Needs You, FYI, and Noise, builds your day in a Today view, and drafts replies in your voice.
Singapore
ByteMail is a native email app for Mac, built with SwiftUI and AppKit. It puts Gmail, iCloud, Outlook, Microsoft 365, Yahoo and any IMAP account in one fast, tidy inbox. Your mail goes straight from your provider to your Mac.
Secure all-in-one collaboration platform that combines email, calendars, tasks, contacts, chat, and video meetings for teams and businesses.
GermanyEU
Ultra-affordable business email hosting and groupware suite. A privacy-first alternative to Google Workspace and Microsoft 365.
Taiwan
