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I just installed Thunderbird for Android on my Pixel phone for the first time. I have used Thunderbird on my desktop PC for many years, so I am very familiar with Thunderbird in general. I used the "Export for Mobile" feature on my desktop installation, to import my account settings into the Android installation.

For the most part, Thunderbird for Android works great, as I would have expected. However I am seeing a problem which appears (to me) to be a bug. When I compose and send an email on my phone, and then look in the "Sent" folder on the phone, the email that I just sent shows up there. But only on the phone. If I open Thunderbird on my desktop PC and look at the Sent folder there, the email that I sent from the phone is not there. Apparently, it only gets placed in the phone's Sent folder, but it does not get copied to the email server.

A few other details: -- I use Thunderbird on 2 different desktop systems, a PC and a Mac. When I send email from either of those, that email DOES show up in the Sent folder on the other system. Emails that are sent from either desktop system also show up in my phone's Sent folder. So I know that the Thunderbird desktop application does upload the message to the email server's Sent folder correctly. But Thunderbird for Android does not upload its sent emails.

-- I don't know if it matters, but my email server is Microsoft 365, hosted by GoDaddy.

-- As far as I can tell, the most obvious setting for this is the "Upload sent messages" checkbox, which can be found in the "Sending mail" section of "Account settings" in the Thunderbird Android settings. This checkbox IS IN FACT turned on. I could not find any other settings which could possibly affect the copying of sent messages up to the email server's folders.

Is this a bug? Any ideas what might be causing this? Thanks for any help.

I have downloaded Thunderbird Android and want to write an email but my address book doesn't seem to work when I start writing into the address ("to") field. How do I connect my address book to Thunderbird?

I have the Android T-bird app on my Google Pixel 9.

I am having constant problems with it not syncing.

This morning, when I swiped down, the kept spinning but did not connect. When i tapped the sync icon at the bottom left of the screen, nothing!

Nothing changed after rebooting the phone, which BTW takes almost twice as long as the reboot on my previous Samsung phones.

I have now uninstalled and reinstalled, and imported my settings using the QR code on my desktop. It imported my accounts, but asked me to sign in or sign in later. There is no link for signing in immediately, and sign in later does not allow any sign in opportunity.

I now have no emails imported to the app.

Any help would be appreciated

I initially used the K-9 email client and switched to Thunderbird sometime last year. For almost a year now, I haven't received any notifications from Thunderbird when new emails arrive, which I believe worked initially.

Then new emails weren't displayed at all; I had to manually refresh my inboxes and folders. A recent update seems to have fixed at least this issue, as new emails are now available when I open my inboxes. However, I still don't receive any notifications.

I have also checked the notifications settings and the permissions, it is always mentioned that the "Alarms and reminders" permission is required, but I don't have this permission. Reinstall the app and reconfigure from the Windows Thunderbird didn't helped as well.

Specs: Phone is a OnePlus 8 Pro OxigenOS 13.1 Android 13

Any help is very welcome; I don't want to reset the device hoping it will work, only to find out that it didn't help.

I'm just wondering if it's possible to get a fetch option that happens more frequently than fifteen minutes. On accounts I'm logged into on multiple devices I'll get the email on my iphone app and then I'm waiting for it to pop up in thunderbird on mobile.

Just added Thunderbird for Android and imported my email addresses.

I am not seeing any messages in the unified inbox and only see that folder and the outbox folder. I have 4 different gmail accounts and 1 yahoo account where I have no issues on the desktop side. Android is 14, running on unlocked Motorola Edge+ 2023 and T-Mobile network.

Please let me know if there is anything additional I can supply to resolve this.

Thank you !!!!!!

Hey everyone,

I’ve noticed that on Thunderbird for Android, some of my email accounts get new messages with a delay of up to 15 minutes. I’d really like to get them instantly (or at least much faster).

A few details: - The email server is my university’s, so it might not have the latest sync features. - I set the folder poll frequency to 15 minutes, and emails do come through fine that way — just too slow. - I also set “refresh IDLE connection” to every 2 minutes. - Running version 13.0 of Thunderbird on Android.

Is there any way to make Thunderbird fetch or push emails instantly? Or is this delay just how it works if the mail server doesn’t fully support push/IDLE?

Thanks for any tips or ideas!

I have setup Thunderbird to check for e-mail each 30 minutes. But I never get any notifications of any new mails :-( And mails are only downloaded when I start the app and swipe down. Folders are setup to sync (but "push" is not enabled). Power settings are set to "Optimized" (works for all other apps that check for things).

I have TB Mobile for Android Version 8.2 on my Samsung A54 running Android 14. I have done numerous searches, but can not find any way to move an email that I accidentally sent to Trash or Spam back to Inbox (or any other folder for that matter). Am I missing something or is this feature simply not available?

I can do the above with my Yahoo mail on my A54 which has a menu that lets me move any email from folder to folder.

Thanks for any help.

One Gmail account imported all of the settings, including the Inbox. The other Gmail account recieves this:

Please sign in We'll redirect you to your email provider to sign in. You need to grant the app access to your email account.

Sign in with Google

Then the following error, as it won't open to Google to confirm (it did with the other account)

Please sign in Oauth sign in failed OAuth 2.0 is currently not supported with this provider Retry

What I delete an email message on my phone, it disappears in my app. But when I check on my computer and in my old email app, the deleted message is still there.

I've checked in multiple email accounts and multiple messages.

Thanks Jim King

I installed Thunderbird for Android today on my Moto g stylus. I used the QR code to import the settings from Thunderbird on my Windows 10 laptop. In general, things seem to be working, but outgoing messages are not being copied to the "sent" folder. I can see older "sent" messages that were sent from my Windows 10 Thunderbird, but no sent messages that originated from my phone. I have an IMAP mail server.

Thunderbird Android v8.2 / Pixel 6a / Android 15 (Feb 2025 security update)

IMAP Push in use for Inboxes only on 3 mail accounts (2 Comcast; 1 Gmail)

  - Enable Push: "on"
  - Enable sync: "off" (for Inboxes; on for all other mail folders)

Installed TB in November 2024 and experienced no problems until recently. Beginning in early February 2025, inbox push/update stops working every ~24 hours. If I go to Android settings and force stop TB, clear cache, then restart TB, Inboxes immediately sync with servers and again function fine for approximately 24 hours (not exactly).

Using TB for 3 e-mail accounts. Only the 3 Inboxes have push enabled (and sync disabled). All other mail folders on each account set to sync every 60 minutes. This configuration was set up on initial installation and worked without issue until recently. The only system modification made in this timeframe was installing the February 2025 Android security update.

Anyone else experiencing similar issues? Any suggestions?

Thank you.

Hi All, I have been sending emails through Android Thunderbird, but they aren't being synced to the server, so I can't see them anywhere else. I've set the Sent folder to sync (as well as the Inbox). Pressing the sync button just spins the indicator, but doesn't actually sync. When I try to move or copy messages, an error comes up saying that messages can't be copied or moved that aren't synconised. How can all my messages (sent, inbox, everything) be synced so that I can see them everywhere? I've just turned on sync debugging, will see the results soon.

Hello, Mi 9 SE with MIUI 12.5.1 Android 11 RKQ1.200826.002 Thunderbird 10.0

I moved from K9 to Thunderbird some time ago without incident. In the last few days I realised I had received nothing and checked on my PC and indeed mails were waiting. I tried to send a test mail from the phone, the mail remained in the OUTBOX and I received the following error message :- "Failed to send some messages ErrnoException: connect failed: EACCES (permission denied)" I checked and this is an Android error and various articles I found that suggest necessary changes to the manifest which I am not capable to change; I am not a coder. I decided to save the configuration, delete and reinstall Thunderbird. After this and reapplying the passwords the waiting mails were delivered. I then tried to send a test message from the phone and again the same error was generated with the phone blocked again from sending or receiving.

I suspect that there was an upgrade applied with a changed manifest that broke the operation of Thunderbird with Android 11.

Can someone please verify this, it may be impacting many installations on older phones?

Many thanks!

I don't know if I just have something configured wrong or if this is a bug.

In case it is relevant, I originally came from the K-9 app and imported my settings to the new Thunderbird app. K-9 is now uninstalled.

I have more than one account, and each inbox is set to show in Unified Inbox.

When I get any new email for any account, I actually get 2 of the exact same notification for each email. There isn't actually 2 emails with the same sender and subject line, when tapping on either of the notifications the app opens and there is just the one email.

I thought maybe Unified Inbox had its own notification setting which might explain why I was getting notified twice, but if there is I cannot find it.

I could always try removing all the accounts and re-adding them, but since I have quite a few I would like to avoid that if I can (and why I chose importing from K-9 rather than manually adding and configuring each one).

Thanks for any assistance.

For the past 2 months I've been using this Thunderbird android app. I don't understand why I keep getting multiple mails being received in my inbox of gmail and Yahoo accounts.

I request you to kindly look into this matter.

Rest all good with the email client.