Thunderbird: Free Your Inbox

21.0

Mozilla Thunderbird

3.77

8,683 reviews

1,000,000+
Downloads

Free

Thunderbird is a 100% open source, privacy focused email app.

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3.77 · 8,683 reviews · 1,000,000+ downloads

Thunderbird: Free Your Inbox is a privacy-first, open-source Android email client with a unified inbox option and OpenPGP support. Built on IMAP/POP3, it’s funded by user contributions and remains ad-free, backed by a global open-source community. It ranks well in COMMUNICATION across multiple markets, with 1,000,000+ total downloads and 100K in the last 30 days.

Pros & Cons

Open-source and privacy-first philosophy
Optional Unified Inbox for multi-account productivity
Broad IMAP/POP3 compatibility with major providers
OpenPGP encryption support for secure messaging

Competitors often emphasize accounts management and provider integrations, areas Thunderbird does not foreground
Some users may prefer stronger onboarding or features highlighted by competitors

About Thunderbird: Free Your Inbox

Thunderbird: Free Your Inbox is a communication app developed by Mozilla Thunderbird.

How many times has Thunderbird: Free Your Inbox been downloaded?

Thunderbird: Free Your Inbox has been downloaded 2 million times. In the last 30 days, the app was downloaded 100 thousand times. It is ranked in the top 100 communication apps.

What is the rating of Thunderbird: Free Your Inbox?

Thunderbird: Free Your Inbox is rated 3.77 out of 5 stars, based on 8.7 thousand ratings.

Is Thunderbird: Free Your Inbox free?

Thunderbird: Free Your Inbox is free to download. The APK download size is 10.36 MB. The latest version available is 21.0. The last update was on July 20, 2026.

What are the requirements for Thunderbird: Free Your Inbox?

The app has a content rating of Everyone. The app has been available on Google Play October 2024.

Description

Thunderbird is a powerful, privacy-focused email app. Effortlessly manage multiple email accounts from one app, with a Unified Inbox option for maximum productivity.

More data about Thunderbird: Free Your Inbox

Price	Free to download
Total downloads	2 million
Recent downloads	100 thousand
Rating	3.77 based on 8.7 thousand ratings
Ranking	Highly ranked
Version	21.0
APK size	10.4 MB
Number of libraries	55
Suitable for	Everyone
Ads	NO ads

App Performance Report

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Alternative downloads for the Thunderbird: Free Your Inbox app

Thunderbird: Free Your Inbox compared with similar apps

Common keywords of similar apps

Li Ul Open Source Supported Community Focused Unified Maximum Team Global Product Contributions Find Contributors Application Crash Thunderbird Email App Privacy Free Inbox Data Messages Multiple Users Personal

Keywords missing from this app

Emails Mail Access Easy Secure Manage Accounts Features Proton Outlook Gmail Encryption Addresses Temporary Receive Encrypted End Apps Mailfence Yahoo Homescreen Https Hotmail Notifications Security Support Create Experience Login Hub Contacts Management Fast Blackberry Attachments Protection Business Spam Birdbox

Google Play Rating history and histogram

4.1K

1.2K

1.5K

1.1K

760

Downloads over time

Thunderbird: Free Your Inbox has been downloaded 2 million times. Over the past 30 days, it averaged 3.5 thousand downloads per day.

Changelog of Thunderbird: Free Your Inbox

Show changelog

Developer information for Mozilla Thunderbird

Mozilla Thunderbird

thunderbird-android-feedback@thunderbird.net

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Comments on Thunderbird: Free Your Inbox for Android

★★★★☆ Shaun Bowen · Jul 8, 2026

I've just tried Thunderbird again after coming from Type App then Blue Mail before that (both ruined now by updates). I've been pleasantly surprised with how easy and straightforward TB is now. I only have a few suggestions that would earn it 5 stars: 1) Allow cycling through accounts by tapping on the account name at the top. 2) Use each account's highlight color in the list view and top bar to easily show which one you're in.

★★★★★ Maydel Fernandez-Alonso · Jul 20, 2026

It works great for my work email. Much better than the Outlook Android app. It automatically detected my configuration from the Thunderbird desktop app, which made the set-up process very smooth.

★★☆☆☆ Jeffery Powell · Jun 30, 2026

Never updates inbox without user intervention. If the app isn't open, and you physically refresh, you will not get your email in a timely manner. I was looking to replace Outlook for Android, but this doesn't work for my needs and presumably anyone else's that REQUIRE immediate delivery. Also, no calendar!

★★☆☆☆ neil gregory · Jun 18, 2026

Been using it for months, ok for basic emailmduries, but still has no in built spam filtering. Why? I'm sick of the junk mail

★☆☆☆☆ Manoj One · Jul 18, 2026

I am using Thunderbird app on desktop. I successfully connected my business emails and using them. However, I am unable to use this mobile app. I can't import settings from the desktop app. When I scan QR code, nothing happened.

★☆☆☆☆ David Porter · Jul 3, 2026

This was so close to being a perfect email client, except it IGNORES BOTH SYSTEM font display AND accessibility settings for font size (I have both set to largest), and has no in-app options to increase the font size for reading email message bodies. The font size is EXTREMELY TINY AND CANNOT BE INCREASED. I cannot read the emails in this app. There used to be an option to increase the font size, but it has been removed without any replacement! The developer response below doesn't work.

Google Play Rankings for Thunderbird: Free Your Inbox

Top rankings

Rank	Country	Category	List
27	Germany	Communication	Top Free
22	Austria	Communication	Top Free
48	Japan	Communication	Top Free
25	Switzerland	Communication	Top Free
62	France	Communication	Top Free
37	Finland	Communication	Top Free
41	Czech Republic	Communication	Top Free
47	Sweden	Communication	Top Free
49	Denmark	Communication	Top Free
99	Canada	Communication	Top Free

Show all market rankings

Ranking history in Germany

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Technologies used by Thunderbird: Free Your Inbox

Thunderbird: Free Your Inbox is requesting 17 permissions and is using 55 libraries.

Permissions

Your personal information

read your contacts

Network communication

view network connections, full network access, Google Play billing service

Hardware controls

take pictures and videos, control vibration

System tools

read sync settings, run at startup, prevent phone from sleeping

Extra

android.permission.FOREGROUND_SERVICE, android.permission.FOREGROUND_SERVICE_DATA_SYNC, android.permission.FOREGROUND_SERVICE_SPECIAL_USE, android.permission.POST_NOTIFICATIONS, android.permission.SCHEDULE_EXACT_ALARM, android.permission.USE_BIOMETRIC, android.permission.USE_FINGERPRINT, net.thunderbird.android.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

Ad network libraries

None found

Social libraries

None found

Development tools

Android Jetpack core

Android Architecture Components

Android Jetpack VersionedParcelable Android Jetpack Annotations Android Library Icon

Android Jetpack Annotations Firebase Android Library Icon

Firebase

Android Jetpack Widgets Android Jetpack AppCompat Android Library Icon

Android Jetpack AppCompat AndroidX Activity Android Library Icon

AndroidX Activity Android Activity Saved State Android Library Icon

Android Activity Saved State AndroidX Loader Android Library Icon

AndroidX Loader

Android Transition Support Library Kotlin Android Library Icon

Kotlin

Android Support Library collections

Android Support VectorDrawable AndroidX Cursor Adapter Android Library Icon

AndroidX Cursor Adapter AndroidX App Startup Android Library Icon

AndroidX App Startup

AndroidX Local Broadcast Manager Android WorkManager Android Library Icon

Android WorkManager AndroidX Widget ViewPager2 Android Library Icon

AndroidX Widget ViewPager2 Okio Android Library Icon

Okio

AndroidX Emoji / Emoji2 AndroidX Concurrent Futures Android Library Icon

AndroidX Concurrent Futures AndroidX Tracing Android Library Icon

AndroidX Tracing Glide Android Library Icon

Glide

AndroidX SQLite AndroidX ExifInterface Android Library Icon

AndroidX ExifInterface AndroidX ProfileInstaller Android Library Icon

AndroidX ProfileInstaller Chromium Android Library Icon

Chromium

AndroidX DynamicAnimation Google ZXing Android Library Icon

Google ZXing AndroidX WebKit Android Library Icon

AndroidX WebKit AndroidX Preference Android Library Icon

AndroidX Preference Jetpack DataStore Android Library Icon

Jetpack DataStore Jetpack WindowManager Android Library Icon

Jetpack WindowManager Dagger Android Library Icon

Dagger

Jetpack Navigation Kotlinx Serialization Android Library Icon

Kotlinx Serialization Jetpack Compose Android Library Icon

Jetpack Compose AndroidX Biometric Android Library Icon

AndroidX Biometric

Simple Logging Facade for Java (SLF4J) Android Library Icon

Simple Logging Facade for Java (SLF4J) Coil Android Library Icon

Coil

AndroidX Graphics CameraX Android Library Icon

CameraX

Apache Commons I/O CircleImageView Android Library Icon

CircleImageView jsoup: Java HTML Parser Android Library Icon

jsoup: Java HTML Parser Timber Android Library Icon

Timber

Moshi

Koin

Skydoves Libraries AppAuth Android Library Icon

AppAuth

kotlinx-datetime FastAdapter Android Library Icon

FastAdapter Apache James Mime4j Android Library Icon

Apache James Mime4j JCraft Android Library Icon

JCraft

Trust & Safety: Thunderbird requests standard networking, notification, and device-access permissions essential for email functionality (ACCESS_NETWORK_STATE, INTERNET, POST_NOTIFICATIONS, etc.), plus optional camera and contacts access. The app is open-source and funded by user contributions, maintaining a privacy-first stance with no ads.

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