Forum zhromadźenstwa Thunderbird

Hello,

My email server has been absorbed into another company. I do not want to continue with the new company and need to keep my current Thunderbird account active and uninterrupted. Can I do this directly with Thunderbird/Mozilla? In other words, do I need a separate email server or can I just continue with Thunderbird for my email account?

If I am able to continue directly with Thunderbird/Mozilla, what needs to happen next?

Thank you, Edward Fleming

I had Thunderbird installed on my Windows 10 computer and on my Android tablet. I noticed that some emails were not going. After hours reading posts on the internet I changed from POP3 to IMAP. Now nothing works. I uninstalled Thunderbird from both my laptop and the tablet and then did a download and reinstall on each. In each case I could receive email but now could not send. In the end I am uninstalled from both devices and loaded another product called EMclient. It installed instantly and properly on both the laptop and the tablet. I would like to return to Thunderbird, in spite of the fact that I lost a lot of emails in folders from a number of years of using the product, but would certainly like a lot simpler installation than what I experienced. Mozilla needs to look at other products and determine why they install so easily and Thunderbird is so difficult. I can't provide the version of Thunderbird other than the version for the laptop was the latest from mozilla's website and the version for the tablet was downloaded from the Play store in both cases this evening.

A previous answer to the question "how do I enlarge the font" in an email message?" suggested clicking on "View" and then on "Font Size". No such options are available to me in Ubuntu. What can I do?

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Thunderbird has become extreme slow. Like it's doing task in the background. Takes emails longer to display and mouse becomes jerky. All other programs OK Especially noticeable after leaving TB running for a while. The previous versions were snappy. This version is very noticeably slower.

How do I deselect multiple folders selected it didn't happen until today and now I can't use thunderbird. There is no way to deselect multiple folder and I did not select that option need to move through different emails account and my local folder where I have emails sorted and I need this at I have emails pertained to forms I need to complete in order to submit request for pension. It work perfectly well yesterday prior to recent update. I need access to my emails

As of Oct 12 2026 I also have this issue. About a week before the 12th I was getting messages that I needed to sign into my RCN account which I would do and it just kept asking me. A few times each night to start then right before it shut me out I had over 50 of these messages just flooding my screen. I never did get a screen shot of that message, but did for the 2 error messages I got later once it shut me out.

I shut down my computer the night of the 11th then when I signed back in on the 12th I could not send or recieve any emails. SOmething similar had happened before, but when I shut down again it went away. This time it did not. I then tried to access my emails thru the webmail I can access, but that also had shut me out. I also tried my tablet, a borrowed smart phone, but I could not access anything for my emails. I troubleshooted with my email company and my internet company, but they found nothing.

Then I shut off the wi-fi on the smart phone and bin go I could access the webmail. But I still cannot find anything on what to do to fix this.

I use RCN for my email, Spectrum for my internet. It is a POP3. Running Thunderbird version 153.5 Oesr (32 bit) Meadow, which says it is up to date. I have norton 360 anti virus & do not use VPN. I disabled my Auto-protect and firewall on the Norton and that did not change anything.

I have sent the error messages to RCN and also troubleshot with Microsoft and had some hints, but nothing has come of that yet. Here are the screen shots of the only 2 things I ould capture. The error message was when I was trying to access my email thru Thunderbird. And it came up every time I tried to send messages, not that does not show up anymore and nothing happens when I try and send anything. The second one was when I was trying to access the RCN webmail and it would not let me in on anything I used. Until I shout off the WI-Fi. Then the smart phone could access my webmail account.

I tried to connect using my proton mail, with the correct credentials and mail, using IMAP (auto), but I received the same message: "No se puede iniciar sesion en el servidor. La configuración, el nombre de usuario o la contraseña probablemente son erróneos".

How can I do to solve this?

Descripción: ProtonMail Nombre del servidor: 127.0.0.1 Puerto: 1025 Nombre de usuario: pixxxxxxx@proton.me Método de identificación: Contraseña normal Seguridad de la conexión: STARTTLS

So long as I investigated, the problem is,

After version154, received emails in Japanese encoded by 8bit causes misconversion (mojibake). Emails encoded by base64 is not misconverted. Only 8bit encoded shows the problem. Version153.5 is no problem. Version154 and newer shows the problem.

Here are OK/NG by sender/receiver combination. Sender version154 8bit - receiver version154 - NG Sender version154 base64 - receiver version154 - OK Sender version154 8bit - receiver version153 - OK Sender version154 base64 - receiver version153 - OK Sender version153 8bit - receiver version154 - OK Sender version153 base64 - receiver version154 - OK

Emails encoded by base64 is OK, but some senders can encode by only 8bit. I cannot find how they can use base64. It would be helpful to know to use base64 encoding in version154 (or later).

However, the best way is that version154 (or later) can read 8bit encoded email in Japanese. I would like to thank anyone who help the problem.

I tried the automated setting up - several times but get the error message below, I tried changing the authentication but same result.

I tried the Help here: https://support.mozilla.org/en-US/kb/thunderbird-and-hotmail - but it didn't help!

I have the settings it shows for Outlook - but it doesn't work! When I "Continue" I get Authentication error. Show less

"Unable to log in at server. Probably wrong configuration, username or password.". It hasn't asked for a password.

I can login in to Outlook webmail and receive messages. Please help. I'm not overly technical but not totally ignorant either! Thanks, Isobel

Im not sure what the heck happened about a month or so ago, and I have still not resolved it. I did check on thing that was suggested to me, but it didnt really make much of a difference. After an update at about that time, my email folders I made appeared all wacky in the sense that some folders were grayed out, but still retained subfolders (with their contents) in them. I dont know what that means or why they are grayed out. I also noticed a bunch of folders named Userfolder with a number after that. They contain many emails in each one, like they were removed from the original folder they were in. So I dont know, for most of them, what folder I had them in. Im thinking I can try and match them to the grayed folder they might belong to, but not sure on where some go. I have no idea why this happened, and I have been trying to use Thunderbird since then. Im attaching a photo of what part of my Thunderbird, folders & grayed out folders look like. I just want to know how to correct this and get things back in order. I dont know if I did something in the settings or what. Plus this was over a month ago. Ive just been using my yahoo mail account on the web.

Thunderbird has been receiving emails on my PC from Bell Sympatico for years, then suddenly stopped in July 2026 without my changing any settings, and I have to go to the Bell server instead.

I'm using Thunderbird 153.5.Oesr (64-bit) on a Linux machine (Zorin OS).

Most of my email addresses use POP, but with a new email address, I decided to use IMAP. When I'm disconnected from the internet, that particular email address keeps checking for new emails and saying it can't connect. I don't WANT it to connect. A message pops up every few seconds or so and is very annoying. I need to unplug my ethernet cable/adaptor periodically, since it seems to overheat, so keeping it connected to the internet continually won't work.

I have un-selected the boxes in Server Settings to check for messages. See the images below.

Any ideas? Thanks!

First off, mucho thanks to Wayne Mery for kindly guiding me back where I should again ask this question. Here's a copy of the message I posted that Wayne responded to --

> Hi Kelly, et al, > > If this isn't an appropriate place for my question / comment / suggestion -- please advise how to do it properly. > > Several months ago, I had a brief exchange with Wayne Merry(?) in which I communicated that I was "certain" that TB was not showing me ALL (99.99%) of the emails I receive for my several hosted domains. I mentioned that I used to receive 20-30-40 spam messages everyday -- mostly in "junk" (not all). Then suddenly that stopped -- perhaps after upgrading to a new version. Wayne seemed little interested in my problem, but suggested I upgrade to a newer version -- which I resisted (just want a "stable" version that works) -- but I did -- to 140.17 esr. > > That upgrade made little difference (maybe one or two more). That is very problematic for my "business-like" use of TB. I live by email. My business card minimizes my phone # (landline) and mainly shows two big, prominent e-addresses -- my old original e-address from an evil ISP in ATL (druw@oneimage.com)-- AND above that -- my main e-address which is identical to the ISP, but with DRU added to the domain (druw@OneImageDru.com). > > I verified this week that a banker business contact -- sent to both e-addresses -- and I only received the one sent to the ISP e-address. Never received the one sent to druw@OneImageDru.com -- at all. This is similar to dozens of similar situations -- in which I never received any (expected) email -- and had to assume that -- just maybe that party never sent an email (not a lot of email lovers left). > > How can I SEE ALL (99.99%) email sent to my TB -- including seeing ALL spam sent to my TB -- just verify that there aren't any unintended NON-spam messages that are being mischaracterized as spam -- but are not? Is there a particular TB version that has potentially solved this problem? > > Any suggestions for running an other particular IMAP client (not deleting) -- to compare with what I get with TB? > > Merci, > > Dru

Hello Dru. You were close with the name :)

Through https://support.mozilla.org/en-US/user/druw/ I see you previous posting No longer see ALL messages, including spam after upgrade to TB 128.14 Oesr (64, Win 10) from 6 months ago and your older posting More "granularity needed" to "How to turn off Junk filtering / TB 115.10 from a year ago.

The description of planning at https://thunderbird.topicbox.com/groups/planning/settings indicates this group is not for bug reporting and support. The place for support is https://support.mozilla.org/en-US/questions/new/thunderbird. You will want to state that the problem is seen with version 153 or newer, and in Troubleshoot Mode https://support.mozilla.org/en-US/kb/troubleshoot-mode-thunderbird Thanks

Wayne

I have been using emails without problem until recently but since a few days ago, it suddenly happened that I now cannot attach files. I have reinstalled software but still I cannot. I was asked to ask email provider so I asked nifty but they have not responded. Another issue, after reinstalled software, description is now shown in English. I can understand it but I would like to know how it can change to Japanese. I would appreciate very much if someone can help to solve this issue. Thank you very much. redacted@nifty.com

Current Thunderbird setup: Computer: Pop3 Phone IMAP

Until last week, I could leave the emails on my phone all day until I accessed them on the POP3 setup on my computer. That would remove the emails on the server and when I went back to my phone, it would show an empty inbox. Now, the emails do not clear out of my inbox on the phone, and I have to delete them manually. This happens on both the production version and the Beta version. Also, accessing via webmail, the inbox will be empty after accessing email on my computer.