Hello everyone, we have tested and listed the best free email clients for Ubuntu in 2025. Whether you’re using Ubuntu 24.04 for work or personal use, having a reliable and feature-packed email client can make all the difference these days, especially in the AI era we are all in.
From lightweight options to full-featured applications, these email clients are designed to help you manage your inbox seamlessly on Linux.
Let’s dive into the top free options and find the right one for your needs.
Best Free Ubuntu Email Clients in 2025
1. Thunderbird
Thunderbird is one of the most popular and well-respected email clients for Linux. It’s actively developed and recently received a major update with the “Nebula” UI. Thunderbird is known for its flexibility, support for multiple accounts (IMAP, POP, Exchange Web Services), and strong privacy features.
It now includes Thunderbird Sync for syncing accounts & settings across devices and has added Matrix chat integration.
Key Features of Thunderbird:
- Multiple account support (IMAP, POP, Exchange Web Services)
- Thunderbird Sync for seamless device setup
- Matrix chat integration
- Built-in calendar and task manager
- Customizable with add-ons
- Advanced security with OpenPGP encryption
2. Mailspring
Mailspring is a modern email client with a sleek design and powerful features. While its free version offers core email management, advanced tools like read receipts and link tracking now require a Pro subscription. It remains a great option for users seeking a polished, efficient interface.
Key Features of Mailspring:
- Unified inbox for multiple accounts
- Smart search and filtering options
- Customizable themes and layouts
- Lightweight and efficient design
- Pro features: Read receipts, link tracking (paid)
3. Bluemail
Bluemail is a robust email client known for its cross-platform capabilities and clean interface. It supports IMAP, POP3, and Exchange accounts, and is actively improving its Flatpak support. Bluemail is also beta-testing team collaboration features.
Key Features of Bluemail:
- Support for multiple accounts (IMAP, POP3, Exchange)
- Group email management
- Unified inbox for all accounts
- Intelligent push notifications
- Available on Linux, macOS, Windows, and mobile
4. Geary
Geary is a lightweight email client designed for GNOME users. It integrates smoothly with GNOME Online Accounts for easy Gmail and Outlook setup. Geary is ideal for those seeking a minimal and fast client.
Key Features of Geary:
- Simple and lightweight design
- Supports IMAP
- Threaded email conversations
- Designed for GNOME users
- Integrates with GNOME Online Accounts
5. Evolution
Evolution is a powerful suite that combines email, calendar, contacts, and tasks. It’s now fully compatible with Microsoft 365 accounts and is an excellent alternative to Outlook on Linux desktops.
Key Features of Evolution:
- Email, calendar, contacts, and tasks in one app
- Supports IMAP, POP, and Exchange accounts
- Integrated encryption support (PGP, S/MIME)
- Advanced search and filtering options
- Native Microsoft 365 support
6. Betterbird
Betterbird is a performance-focused fork of Thunderbird. It offers UI tweaks, faster response times, and better handling of large mailboxes, while retaining Thunderbird’s familiar interface.
Key Features of Betterbird:
- Enhanced performance over Thunderbird
- UI improvements like customizable tab positioning
- Privacy-focused with built-in security features
- Supports IMAP, POP, and Exchange accounts
- Faster response times for large mailboxes
Which email client do you prefer on Ubuntu? Drop your choice in the comments!
Also Read: Best Web Browsers for Ubuntu, Best remote desktop apps on Ubuntu, best torrent clients on Ubuntu
