Thunderbird for Android Community Forum

After the most recent Thunderbird app update from Google play, the Thunderbird app crashes instantly and constantly on start up. I did restart, uninstall, reinstall, OS update, clear cache, smart clean and still the Thunderbird app crashes instantly on start up. The screen will flash a few times as the app attempts to start. But instantly a window pops up saying the app has unfortunately shutdown. I am at witts end. I have been using Thunderbird for years. Never had this happen before. Anyone have any ideas? Google suggests getting hold of Mozilla support because this is becoming an on going issue. Please help.

I installed Thunderbird on a new Motorola Razr running Android 15. It worked just fine for a few days, but now will not download any new emails (GMail on the same phone is working fine). I have two accounts installed. One (much smaller) seems to be working fine, while the other is only partially working. Namely, I can only see emails from Monday or earlier (today is Thursday).

If I use my desktop to delete one of the older messages that is displayed on the phone, it will be removed from the phone the next time I swipe down and have it refresh the inbox. If I use the desktop to update the read/unread status of an email that does appear one the phone, that is not updated when I refresh the phone.

It is a recently added account, is it possible that the device is just downloading older messages and is backed up? I don't know where or how I could access the activity monitor (or whatever the proper name is) to see what the program is or is not doing.

Hello everyone,

Summary: I am trying to set up my gmail account on my new phone, but after (what appears to be) successfully logging in, the Thunderbird for Android application does not pull me back out of gmail. Instead, I remain logged in to my gmail account as if in a browser. As you can see from my photos, it takes me to the point where I am truly into my gmail inbox, but I am checking it as if in some sort of outdated browser and not as if in Thunderbird. I am stuck; sitting in my gmail account, logged in; able to view email, check and change account settings, even get onto other parts of my google account. Unfortunately, I cannot find a way to get back out of my gmail account that returns me to the Thunderbird for Android accounts setup process with a successfully login to gmail. I end up having to hit exit or to close the app, which causes the account setup to fail.

Expected Behavior: Open the Thunderbird for Android App. Setup new account (gmail which produces an automatically detected OAuth 2.0 method). Give login credentials, gain access to gmail, and then be auto-redirected back to accounts setup process in Thunderbird for Android with full IMAP + SMTP access to my gmail.

Problematic Behavior: Same as above, except I am stuck as if in browser mode. When I exit and thus am returned back to the accounts setup page, I receive a failed notice (see photo). Immediately afterward, I tried to setup an account for the same gmail address on an old android phone and successfully logged in as expected. How do I get back to the main accounts dialog with a success?

Notes: The new phone is a linux-based phone (Furilabs FLX1s) on which I have found Android apps to function without hiccup. It seems like In fact, the Thunderbird for Android app itself seems to function fine. It doesn't crash. It allows me to navigate through the app menus flawlessly.

Thanks for the help!

I am having a configuration problem on my Android phone, configure it from the application installed on my Windows laptop. I receive my emails but they are periodically completely deleted during message synchronization. how to resolve this malfunction? THANKS

I have installed Thunderbird on my Samsung phone and synced it with the desktop. All three of my gmail accounts came up okay, but when I go into them I do not get the inbox, only outbox. When I click on each account to try to sign in I get an error that says "OAuth 2.0 is currently not supported with the provider". How can I sign in to my gmail accounts on my phone in Thunderbird?1

Hi,

How do I transfer emails from Thunderbird Desktop to Thunderbird Android?

I have successfully imported my settings, but I want to add all my emails that are currently on my desktop.

How do I do it please?

Imported desktop settings to TB Android on my phone. Used your instructions and seemed to go well (done it before). Android install of both Gmail accounts I imported are 'stuck' showing ONLY the outboxes. Can't get anywhere else. What do I need to do to correct the install on my phone. Desktop install was done manually and seems to work.

When composing emails in Thunderbird for Android, I can't find any options to format text.

I can't select a typeface (even the most basic html tags for serif/sans-serif/monospace aren't available) or even make text bold, italic or underlined.

This makes it very hard to create emphasis where necessary, and it feels like ancient emails from before HTML formatting.

Is there something I am missing, or does this depend on the phone?

NB: I can do this with my messaging apps and the Gmail app, which I prefer not to use.

Sony Xperia 10 V Android 14

Hi team. Recently, I downloaded the app, but I noticed that the incoming emails are updated every 15 minutes. Could you please reduce the time into 1 min? Also is there any notification for incoming emails? I made folders for better correspondence with clients. Still there is no notification for incoming email.

I'm using Thundebrird version 17.0 on Android 15. I sent last month an email (from Thundebrird Desktop) to multiple people and got from around 20 of them responses which I critically need to preserve. I deleted none of them (intentionally). Today I found out that 15 of them disappeared from my inbox, when checking on Thunderbird on my laptop. On my phone I can find those 15 in my trash folder grouped together. I was super relieved to find these critical responses but also confused since I definitely didn't delete 15 of those emails. Most likely they were grouped together and I swipe delete them by accident. I mark each of them and select "move to" -> "Inbox". And now they just vanished. They are no longer in my trash and don't show up in my inbox. Normally when I move from deleted to inbox they move fine, same for spam.

Anything I could do? Anywhere I could look for these emails?

Hello, this problem is driving me mad and I am at the point where I give up with Thunderbird

What's happening is "random" emails go into the outbox and stay there, I have no choice but to delete them.

There is no rhyme or reason for this.

The majority of emails send, even to the address that will randomly stay in outbox. !!

I have deleted the account and reinstalled it, used the same settings that are on another account that I don't have a problem with.

I am using android on galaxy tablet.

Anyone have any ideas

Thanks

On my Android phone, emails from my thunderbird account are no longer synching. I no longer get emails on the phone app. I currently have version 17 installed, and nothing happens when I tap on sync account. The only thing showing in the window is "Load up to 100 more". And nothing happens when I tap it. I'm lost and don't understand whats happening.

¡Hola a todos!

Llevo días intentando añadir una cuenta de outlook a la aplicación del móvil (en el ordenador, tras varios intentos, sí lo he conseguido).

Se trata de una cuenta personal y aunque ya he habilitado IMAP, no me da la opción de habilitar SMTP, que es lo que me está fallando.

El error que aparece es:

"El servidor devolvió el siguiente mensaje: Authentication unsucessful, SmtpClientAuthentication is disabled for the mailbox."

He probado también a cambiar el servidor por smtp.office365.com, pero tampoco lo consigo de esta forma. ¡Ah! y está con Oauth2 también.

Me tiene un poco desesperada el tema, así que toda ayuda es bienvenida.

¡Muchísimas gracias!

Saludos.

I have just reinstalled T/B (3-4 times now). Scanned barcode from notebook. Installed ok. This mobile T/B DOES NOT give me any option to add folders. Only: inbox, outbox, drafts, sent, deleted. I at least want (1) extra folder to store messages. How do I achieve this? Thanks My laptop T/B works well (on Ubuntu)

My K-9 in Android suddenly stopped to work a couple of days ago. The server asks for autentification. I haven't changed anything. I've uninstalled and reistalled the app and restarted my phone a Samsung S22 ultra several times. The app is recognating some settings automatically but it doesn't accept my old password with 16 letters in a group of four with highfens in between. What shall I do, please? Something wrong with the server? The version of the app is 17.0 updated March 16th 2026.

In Thunderbird for Android, Thunderbird does not notify a received email, when: I have created a setting with a rule/line, where this email is moved to a underlaying folder.