Thunderbird Community Forum

Hello; I'm having connectivity problems with the TWC ports. They are the correct ports as per their CS and said that it could be an issue with Thunderbird connecting to the ports. I was hoping to test them at this support site but there isn't any help except historic forum responses, which I don't know will be of help. I'm using Google to open the mail. Any ideas out there?

Part of my problem has to do with the help aricles that direct me to a format that does not exist on myTbird ap ( 159.0)( on my Macbook pro Tahoe 26.7.1. Another problem is that I am constanly being interrupted by sluggishness occurring in last 3 days, probably from memory demands ot Tbird which is insane, I do not have that many emails and have never seen an email program using memory like this. I need accurate guidance to fix this. Help would be so appreciated.

Thunderbird has bricked on me for the 1st time ever. It won't open my inbox. My cursor turns to the hourglass and there's a dialog that says no message found. It seems to know it's me because I still have tabs across the top where I had open messages and also my name appears in the upper right corner. This is on my Dell Windows 11 desktop. I dont know which version of TB I have but I'm sure I have update set to auto. I just now downloaded version 159 but have not clicked install pending what I can find out here...

When a task is set up one of the options is to prioritize the task. However, the saved task is not sortable by priority or searchabe by priorty and doesn't show its priority when in a list, I have to wonder why it is there if it doesn't add any related functionality.

I have Thunderbird on Linux Mint Cinnamon

I have installed Thunderbird to work with my spectrum email account. I had successfully installed it and was even able to recieve emails, but could not sent them. I uninstalled it, reinstalled it and now I can't receive emaill either. The settings for the servers and my username (fulll email address) all look correct per spectrum's website. Whenever I enter my password into Thunderbird I get:

"Login to server mobile.charter.net with username stynee@ca.rr.com failed."

Next steps?

Dear all, I am currently running Microsoft Outlook 2021 for Mac on my MacBook Pro. I like to switch to Thunderbird. I am sure I know how to set up the various e-mail accounts in Thunderbird.

For me, it is important to have the current data (emails, folder with e-mails, contact data, calendar entry) transferred to Thunderbird so that i do not have to switch between Outlook and Thunderbird.

Question: How can i migrate all my e-mails, folders, calendar entries and contacts from Microsoft Outlook 2021 for Mac to Thunderbird?

Thank you for your help!

Best regards Reinhard Benditte

Hello My previous computer has crashed. C:/ is not available any more. In my previous computer, I had two hard drives: a C:/-drive (an SSD) where Windows and other software were installed, The second hard drive was a conventional drive (D:/) where I stored all my files, documents, images, and so on. On this d:/ I also had several programs installed including Thunderbird. On that previous computer, I saved and organized my emails into subfolders within Thunderbird.

Is it possible to recover my address book in Thunderbird? Is it possible to find/recover my saved emails? Could they perhaps be saved somewhere on my previous C: or D: drives?

I have an old copy of my C: and D: from 2025 I have also a complete copy of my D: from my old computer.

I have now bought a new computer and installed Thunderbird. I would be very grateful if this could be resolved. Kind regards Anders Quant

Mac OS 26.7.1.

There are 2 responses to IMAP command 103. IMAP command '104 IDLE' between the 2 responses. The first one is correct. The second one!!! is identical to the first one except it is prepended with the letter 'p'!!!. Always the letter 'p'. It looks like a programming error.

Note that the entry in prefs.js for this main account is broken since migration for Thunderbird 155.0.1 to 156. Every time I change some settings in the Identity section, 2 prefs.js entries are removed: mail.identity.id1.fullName and mail.identity.id1.useremail. This prevents me from sending emails from this account until I enter the proper values from the Prefs editor. I realize this is 2 problems but I think one may cause the other. Note that I have a second Yahoo! account that works perfectly well.

Thanks for any advice.

330626000.txt:

2026-10-24 16:23:22.455152 UTC - [Parent 23990: IMAP]: I/IMAP 330626000:imap.mail.yahoo.com:A:SendData: 93 ID ("name" "Thunderbird" "version" "158.0.1") 2026-10-24 16:23:22.946354 UTC - [Parent 23990: IMAP]: I/IMAP 330626000:imap.mail.yahoo.com:A:CreateNewLineFromSocket: * ID ("version" "1.1.26730" "host" "localyahoo.serving-api.mail-serving-jimap-prd.gcp.yahoo.cloud" "name" "Y!IMAP" "vendor" "Yahoo! Inc." "support-url" "http://help.yahoo.com/" "remote-host" "67.195.177.120" "via" "jimap400041.imap.mail.yahoo. yahoo.cloud|localyahoo.serving-api.mail-serving-jimap-prd.gcp.yahoo.cloud") ... 2026-10-24 16:25:51.321640 UTC - [Parent 23990: IMAP]: I/IMAP 330626000:imap.mail.yahoo.com:S-INBOX:ProcessCurrentURL: entering 2026-10-24 16:25:51.321712 UTC - [Parent 23990: Main Thread]: I/IMAP 330626000:imap.mail.yahoo.com:S-INBOX:SetupSinkProxy: got m_imapMailFolderSink 2026-10-24 16:25:51.321793 UTC - [Parent 23990: IMAP]: I/IMAP 330626000:imap.mail.yahoo.com:S-INBOX:ProcessCurrentURL:imap://XXXXXXXX.XXXXXX%40ymail.com@imap.mail.yahoo.com:993/select%3E/INBOX: = currentUrl

2026-10-24 16:25:51.323962 UTC - [Parent 23990: IMAP]: I/IMAP 330626000:imap.mail.yahoo.com:S-INBOX:SendData: 102 noop 2026-10-24 16:25:51.866542 UTC - [Parent 23990: IMAP]: I/IMAP 330626000:imap.mail.yahoo.com:S-INBOX:CreateNewLineFromSocket: 102 OK NOOP completed

2026-10-24 16:25:51.866628 UTC - [Parent 23990: IMAP]: I/IMAP 330626000:imap.mail.yahoo.com:S-INBOX:SendData: 103 UID fetch 388684:* (FLAGS) 2026-10-24 16:25:52.088074 UTC - [Parent 23990: IMAP]: I/IMAP 330626000:imap.mail.yahoo.com:S-INBOX:CreateNewLineFromSocket: * 9700 FETCH (FLAGS (\Seen $NotJunk) UID 388683) 2026-10-24 16:25:52.392757 UTC - [Parent 23990: IMAP]: I/IMAP 330626000:imap.mail.yahoo.com:S-INBOX:CreateNewLineFromSocket: 103 OK UID FETCH completed <<<<============ 2026-10-24 16:25:52.426006 UTC - [Parent 23990: IMAP]: I/IMAP 330626000:imap.mail.yahoo.com:S-INBOX:ImapThreadMainLoop: idlePending set

2026-10-24 16:25:54.431078 UTC - [Parent 23990: IMAP]: I/IMAP 330626000:imap.mail.yahoo.com:S-INBOX:SendData: 104 IDLE 2026-10-24 16:25:54.544903 UTC - [Parent 23990: IMAP]: I/IMAP 330626000:imap.mail.yahoo.com:S-INBOX:CreateNewLineFromSocket: + idling 2026-10-24 16:25:54.545022 UTC - [Parent 23990: IMAP]: I/IMAP 330626000:imap.mail.yahoo.com:S-INBOX:HandleIdleResponses: idle mode async waiting

2026-10-24 16:28:20.264066 UTC - [Parent 23990: IMAP]: I/IMAP 330626000:imap.mail.yahoo.com:S-INBOX:CreateNewLineFromSocket: p103 OK UID FETCH completed <<<<============

p103 OK UID FETCH completed !!! (Server error or client error?)

No matter how large or small the Thunderbird window is, I can't see all 3 of the Address Book columns without expanding the window to take up the entire laptop screen. The column width seem to be locked in at a pre-set number of pixels. I've tried to grab the edges of the columns to reduce their width, but they don't seem to be active. What I would really like would be for the Book to adjust to the Thunderbird window's width, or at least let me scroll between the columns. As it is, I can't view or edit the entry details of a individual listing in my Book without greatly enlarging the whole window.

Any ideas on changing these column widths would be appreciated. I've got Windows 11, and TB version 140.13.0esr (64-bit).

Thanks, Grasses

The functionality of the addressbook is very frustrating to me.

I have about 1000 contacts in my addressbook, which I'd love to sort into groups. And when writing an email to a certain group, I would like to display the list of that group in the sidebar of the Email. However, this is only possible when I make a new addressbook for each group, because only addressbooks are displayed as a list with all the contacts contained.

Now most of my contacts are in several different groups/addressbooks (for example, "Steve" is in my "hiking" group and also in my "work" and "neighborhood" group). However, one contact can only be in one addressbook. Meaning if I want to add Steve to the different groups/addressbooks, I have to copy his contacts three times to be able to put him in the three different groups/addressbooks. Doing this for all the contacts I have, it would get cluttered very much, very soon. Which I find super frustrating because it can get very confusing and it just seems so unneccessary. The other frustrating thing about this is, you can't just copy a contact, but you have to create a contact manually each time or via the "save email" button in received emails. But the latter can also be confusing because the format of the saved contact can vary; Steve can either be "Steve Smith" one time, but also "NameIThoughtWasCoolWhenIwas12@narf.org" another time.

What I'd love to have is ONE profile for each contact where I can put in all the information I have/need/want and that profile can be part of several different groups. If a contact has more than one email in their profile (i.e. privat, work), I'd ideally be able to attach one email to one group and another email to a different group. And obviously, the group can also be displayed as a list in the sidebar while writing an email (just like addressbooks are now).

I don't know how it can be implemented (keywords, tags?), but it would be great if it was possible.

I also don't know if it is possible already and I'm just to slow to get it. So if anyone knows a) how to add a contact to several addressbooks without having to copy the contact each time or b) how to display a mailing list as a list in the sidebar, I'm all ears.

Hello!

When I opened Thunderbird today, the main middle pane has an advertisement "Welcome to FREEDOM." How do I get rid of this so that I can see and open my email? I have tried several ideas that I found in the comments before I signed in to this support that asked me to sign in. I tried the suggestions, and none of them work, which is why I came here.

I have attached a screenshot of my entire Thunderbird window. I currently. have 298 emails that I cannot access.

I am currently at work, and really need to be able to access my emails.

Also, I have donated in the past, including earlier this year.

Thank you!

Hello,

I'm very fond of Thunderbird (using it only for agenda, but a lot) and I think that a new practical function would be to be able to paste plain text (= without formatting) with the right click of the mouse into an agenda cell.

As I add a lot of events and text into the agenda cells directly from websites or documents, I'm always getting the original formatting that I don't need and can look quite bizarre.

Plain text could harmonize everything. I know I could select the text and reformat it in Thunderbird but it's adding unnecessary steps.

Thanks in advance for the consideration of my proposal, thank you developers, and have a good day !

"C:\Users\kasti\Pictures\'Tis the season to give a little Galaxy - 'Samsung' (samsung... - 2026-11-09 1019.eml"

Displays graphics when viewed on Gmail but not when viewed using Thunderbird.

"C:\Users\kasti\Pictures\'Tis the season to give a little Galaxy - 'Samsung' (samsung... - 2026-11-09 1019.eml"

Displays graphics when viewed on Gmail but not when viewed using Thunderbird.

Thunderbird does not display the icons like inbox, sent, etc at startup. I reinstalled the client and everything worked but when I restart it does show the icons or my mail. What setup am I missing?

I have had to give up trying to use thunderbird as it constantly hangs for ages or completely freezes and is frankly unusable. Tried both the system and flatpack versions and it is the same.

Is this a known issue and are you doing anything about it?

It looks good if only it would work!

Can you offer any advice?

Geoff

PS full version is 1.153.6.0esr+linuxmint1 but the dialog box will not accept it.

I currently have spectrum service and have gone through this with them. Everything is fine on their end. TB is throwing this message when I try to send an email.

"Sending of the message failed. The message could not be sent because connecting to Outgoing server (SMTP) mail.twc.com failed. The server may be unavailable or is refusing SMTP connections. Please verify that your Outgoing server (SMTP) settings are correct and try again."

It all worked fine until last week.... Once this started, I changed all servers / ports etc to the settings Spectrum suggested to no avail.

Any ideas?