Experimental terminal mail client aiming for configurability and extensibility with sane defaults.
+3
Thunderbird Alternatives
One of the most popular alternatives to Thunderbird is Betterbird, which is free and open source. Other popular alternatives are K-9 Mail, Evolution, Microsoft Outlook and SeaMonkey. There's no shortage of Email Clients like Thunderbird, with more than 100 alternatives for Windows, Mac, Linux, Android and iPhone.
filter to find the best alternatives
Most Thunderbird alternatives are Email Clients, but you can also narrow the list to Calendar Apps or Contact Managers. Other popular filters are iPhone, Linux, Open Source, Android and Windows. You can also filter for EU-based alternatives if you prefer software from the European Union.
Alternatives list
yMail2 is a standalone email client for Windows (and Linux), available for free since 2003. Now with SSL support included so you can use it with Gmail and Hotmail POP3 and SMTP accounts.
Australia
122 Iceape-UXP alternativesHistorically, Iceape was a re-branding of SeaMonkey by the Debian project. However, Debian discontinued Iceape in December 2013 citing security concerns and lack of a maintainer.
Hylki is a fast, GNOME-native email client with a three-pane layout, unified inbox, and support for OAuth accounts. Fast to open, effortless to read, and private by default.
United States
GyazMail is a email client software for Mac OS X, based on Cocoa framework, simple, easy-to-use with many features.
Japan
An open-source email app for Android delivering privacy with a user-friendly minimalist design. It supports multiple accounts, a unified inbox, conversation view, and encryption. Offers two-way sync, offline storage, minimal data use, and battery efficiency. Export settings for easy setup.
Metis Suite is an open-source mail, calendar and drive client. It connects to the accounts you already have (Gmail, Microsoft 365/Outlook, Zoho, IMAP/SMTP, CalDAV, S3, WebDAV, FTP and SFTP) and puts them in one app, with an AI assistant, automations and phishing warnings on top.
India
+2
MailCode is a desktop mail client for people whose mailbox stopped being an inbox years ago and became an archive. It keeps every message on your own machine, indexes all of it, and answers a search.
+7
Supamail AI turns hundreds of emails in last 24 hrs into clear summaries, smart categories, and easy replies so you never feel overloaded again.
- United States
+3
Email client and email notifier in one. Allows you to send, receive, and manage e-mails, get notifications of incoming email messages from your buddies, coworkers or family members online. Contains free email sender interface ready to cooperate with other software via XML, CSV...
Slovakia
EU
+5
Desktop IMAP client for macOS, Windows and Linux that reads and replies to email, then archives messages as .eml files in Maildir-style folders. Archived mail remains searchable offline, and Archive & Delete verifies the saved copy before removing it from the server.
+8
Brazil
