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Mailbird vs Thunderbird

Published On December 12, 2024 - Last Modified On May 18, 2026

Mailbird vs Thunderbird Comparison Image

Meet the contenders

Whether you're a freelancer, small business owner, or corporate executive, there's an email app for you. We're here to help you decide.

Let's look at how these two email apps stack up against each other.

Mailbird Logo

Mailbird

Mailbird is a flexible and easy-to-use email client that promotes elegant simplicity and powerful functionality, including multi-account management from most email providers (such as Gmail and Outlook), unified inbox, customizable interface, third-party integrations, and a streamlined workflow directly from your inbox. With a clutter-free design and pleasant user experience, Mailbird has become the go-to email app for more than 4M users who trust it with their personal and professional email.

Thunderbird Logo

Thunderbird

Thunderbird is a free, open-source, cross-platform email client that’s managed by a core staff and a community of volunteer developers. Although the app is already quite robust, there are optional add-ons that you can install to enhance its functionality. So, when it comes to cost-effective email client apps, you can’t go wrong with free—there are no separate paid versions.

Mailbird vs Thunderbird: A side-by-side comparison

Mailbird LogoMailbird
Thunderbird LogoThunderbird

Operating system

WindowsMacOS

WindowsmacOSLinuxAndroid

Versions

Free

Premium

Free

Price(s)

  • Free

  • Premium Yearly: $5.75/mo

    Premium Pay once: $99.75

    View detailed plan and pricing information.

  • Free

Notable features

  • Multi-account support

  • Unified inbox

  • Third-party app integrations

  • AI tools

  • Email templates

  • Unsubscribe and block senders

  • Microsoft Exchange support 

  • Email snooze

  • Speed reader

  • Native calendar

  • Advanced search

  • Email tracker

  • Customizable user interface

  • Multi-language support (currently translated into 21 languages)

  • Multi-account support

  • Unified inbox

  • Extensive library of add-ons

  • End-to-end encryption (S/MIME and OpenPGP)

  • Junk mail filtering

  • Spam filtering

  • Phishing protection

  • Built-in chat

  • Built-in newsgroup and RSS reader

  • Tabbed email interface

  • Customizable user interface

  • Multi-language support (currently translated into 65 languages)