Komunitné fórum Thunderbird pre Android

I have been running Tbird on my desktop for years, and it's still working great.

About 2 years ago I picked up a One Plus 11G which came with no e-mail client. I searched for Tbird and found K9 mail (with promises of Tbird soon), which I installed and used since then with no problems.

Few months ago, i got my wife a Samsung23+ and she used the supplied e-mail and messaging programs but constantly complained that she could have only one notification sound for both mails and texts and wanted to tell them apart. I told her I'd have to install a separate mail app so she could have two different sounds.

OK, I checked and finally found that Tbird was now available for Android so i installed it on her phone and she is very happy now.

Since it worked for her, I decided to install it on my phone to replace K9 Mail, and that's when the fun started.

It works great for incoming mails, but when I try to send mails via WiFi or via cell, I get a "Failed to send some messages sender refused" notification.

I got another phone and installed Tbird and it behaves the same way on that phone whether I set it up as POP (my usual setting) or IMAP.

I've installed other mail apps (GMAIL and Edison)and they send out with no problems both POP and IMAP.

If I go to the the Optonline web mail site via Firefox on my phone, I have no issues sending out mails, but that is a clunky way to do since Tbird normally worked so well as it is now or in iots earlier K9 version.

Any idea what is causing this problem only with Tbird? I really like Tbird and I don't like the other two apps.

Not getting any mail on my Android devices. Had to get a new Google account as the old was was very screwed up. I have TWO email accounts: GMail and Outlook. Outlookk account forwards all incoming mail to GMail account, so I should get mail only from GMail, but both accounts are set up in TB anyway. Outlook is set up as IMAP. GMail is set up as POP, necessary for some reason GMail setup (gmail.google.com) told me. Something about keeping message on the server or deleting them. Have an APP PASSWORD for GMail account because TB didn't like the POP account. Set up TB on my laptop physically. To speed up rest of work, I used TB "Export to mobile" on my phone and tablet. That's when the problems seemed to start. Finally had to set up TB on BOTH Android devices, which as far as I know, I did correctly. With that background, why am I not getting email on either Android device? Any help greatly appreciated.

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!

Could you please let me know if it's possible to add signatures with a bit of graphics in the Thunderbird app for Android? Or, for example, is there an option to include special characters or use bold font in the signature? Alternatively, is it possible to insert a signature using the contents of a file (such as a text file, HTML file, or image)? The current signature options look very poor...

Bardzo prosze o informację czy istnieje możliwość aby w Thunderbird na Android można dodać podpisy do wiadomości, które miałyby odrobinę grafiki ? Albo np opcję dodania jakiś znaków lib pogrubienia czcionki ? Lub czy mozna np dodać podpis Używając treści z pliku (tekstowego, HTML lub obrazu ? Podpisy w obecnej wersji wyglądają bardzo słabo...

Been using Thunderbird for Android for many months for the email accounts I have with my ISP [optonline.net]. Several days ago sending of emails began failing. Error messages appearing in my Android Notifications say, "Failed to send some messages" "Sender refused". This is happening on all 4 of the devices my wife and I use. 2 phones and 2 tablets. Optimum is blaming Thunderbird. Thunderbird is still working fine on my Windows computer. It seems that all info regarding turning on Troubleshoot mode is referring to the Windows version as I can't find the "Help" menu item in the Android version anywhere. I have reconfigured the accounts in Thunderbird multiple times. The setup of SMTP always seems to end clean with a message of "Settings saved". It seems to me that Thunderbird is getting some error code from my ISPs mail server and I am hoping to have some more info to share with their tech support. The version if Thunderbird for Mobile we are on now is 9. I noticed that version 9 was just released on 5/5/2025. Not sure when exactly version 9 was pulled down to my devices. My phone is Android version 10. My tablet is Android version 14. Both are having the same exact issue. Is there a Troubleshoot Mode in the Android Thunderbird app? Is there a log file that could shed some light on the problem? Just tried the Beta version. Same problem. Also tried versions 8.2 and 8.0, Same problem. I still think that it's on Optonline.net but I'm going to need to do their job for them and find the reason it's stopped working. They are just going to blame Thunderbird. [and yeah, I tried K-9 as well]

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).

Good afternoon, dear friends. Thanks for the awesome program for the android version, I use it on my computer too. Can you tell me how to set the frequency of checking emails more often than the 15-minute interval? In other android mail clients, emails arrive almost immediately, within 5-10 seconds, but here the verification interval is very long, and manual verification is such a thing. How do I set it up?

Ich nutze Thunderbird auf dem PC ohne Probleme mit fünf Mailadressen. Jetzt habe ich die App Version auf mein Android Smartphone geladen mit dem Barcodescanner. Ich kann eMails versenden aber ich empfange auf keiner der Mailadressen eine Nachricht über die App Version. Auf der PC Version kommen die Nachrichten an.

Translation: I use Thunderbird on my PC with five email addresses without any problems. I've now downloaded the app version to my Android smartphone with the barcode scanner. I can send emails, but I'm not receiving any messages from the app version at any of the email addresses. Messages arrive on the PC version.