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I cannot open my Thurderbird account. I keep getting an error "Non-overidable TLS error recorded. Handshake error or probably the TLS version or certificate used by server mail.atlantic net is incompatible.

I cannot get or send any emails. What do I do?

I’ve read all the archived queries about this issue. I’m running Windows 11, get my mail via POP, do use folders for sorting mail, but have an Inbox with way too many messages. Once this is fixed, I will do a better grooming the Inbox. The problem started three days ago as a result of my weekly backing up of Thunderbird using MozBackup. I found the very helpful reply by Toad-Hill on 11/7/23 to a similar query, and assume something got corrupted during the backup. (I’ve noticed that folder names get garbled sometimes after a backup.) Following Toad-Hill’s instructions, in Profile Folder > Mail > my-server, I’ve renamed “Inbox” as “OldInbox,” and a new Inbox shows as created in the folder for my mail server, along with a new Inbox.msf .

Now when I open TB, OldInbox exists, and I can read the messages in it. It contained multiple copies of one new message, apparently downloaded every time I tried to Get Messages. BUT ... Inbox continues to show the same old list of emails that used to be there, doesn’t allow me to read any of them, and I still get the error message. Somehow TB isn’t using the new Inbox that was created in Profile Folder > Mail > my-server. I’ve tried clearing the startup cache to no effect. FWIW, I see that in Profile Folder > Mail > Local Folders, there’s an Inbox.msf dated over a year ago. The Sent.msf, Drafts.msf, and Trash.msf in Profile Folder > Mail > Local Folders are up to date. What do I do now? Is it safe and appropriate to copy the new Inbox.msf from Profile Folder > Mail > my-server into Profile Folder > Mail > Local Folders in place of the old Inbox.msf there?

Hello I'm new to Thunderbird for Android. And I'm not really well versed in using all of the options of Gmail. But what I would like to know is how can I sync my folders such as trash or spam with my Gmail account using Thunderbird for Android? I went in and clicked on the sink button to let them sync but they're not doing it. For example I deleted an email and put it into trash but I'd like to archive it. When I go to move it it tells me I cannot move anything from a folder that is not synced. I've searched all over the internet to try to find an answer and I've had no luck. Anybody know what could be the issue?

tl;dr: How can I import Outlook 2013 messages into Thunderbird?

Background: I used Outlook Express until Microsoft killed it, and have used Outlook 2013 since. Now Microsoft has forced me to abandon that due to Oauth2 not being supported, so I am looking for a replacement.

Thunderbird seems to be a recommended solution, but despite poking around in the community forums and help files, I am not finding straightforward answers to my questions on the current platform. (Side note: I have been using Firefox since it was Phoenix and then Firebird, and then Firefox, but never really used Thunderbird.)

I found and attempted to follow the instructions for import here: https://support.mozilla.org/en-US/kb/thunderbird-import but it must not work with older versions of Outlook, as I got a message saying "No profile found." (I ran it under the same user, an admin, that has the Outlook 2013 installed, so I don't know where it is looking for that profile). Import from a file doesn't give the option to use the Outlook file types.

So, given that, how can I import my email and address book from Outlook 2013?

Thanks in advance!

Even though Thunderbird is not my default email client, when I create an email out of my Access database, Thunderbird intercepts the outgoing email and loads instead of Outlook. If I uninstall Thunderbird, Outlook opens as usual.

Whenever I click away from the write window while writing a reply, the window gets closed, not minimized, and the email is sometimes saved as a draft. I'm not sure how to fix this, I'm using Thunderbird 128.4.3esr for Arch Linux.

I have a problem with receiving POP3 and sending SMTP emails, but it only concerns the Onet (onet.pl and onet.eu) server. All POP3 and SMTP settings are correct, verified. The problem appeared a few days ago, probably after an update. The problem with receiving is when I receive emails in bulk from all accounts by clicking the Download button (Download new messages for all accounts). They are downloaded from all servers, except Onet. This problem does not occur if I download messages from Onet by clicking in the menu File/Download messages from/account name. The problem with sending messages appears when after writing an email I click the Send button (Send this message). There is no problem if I click the File menu/Send later, and then in the Outgoing folder I click Send pending messages. Can anyone help me to solve this problem?

I am sending emails but they dont appear in the Sent folder. I have changed no settings. They used to go to the Sent folder but have stopped. All my settings are correct but the Sent folder is not being populated. Whats wrong?

Hello, Since the Oauth2 security from Microsoft, I can't send messages anymore from thunderbird with an outlook adress (but I can receive messages after following instructions) I followed rigourously the instructions from Microsoft and Thunderbird on this two pages : https://support.microsoft.com/fr-fr/office/param%C3%A8tres-pop-imap-et-smtp-pour-outlook-com-d088b986-291d-42b8-9564-9c414e2aa040 https://support.mozilla.org/fr/kb/microsoft-oauth-authentification-thunderbird (These are pages in french because I'm French hence my poor english (sorry for that)) And tried every solution (for instance, the smtp server advised is not the same for Microsoft and Thunderbird, of course I tried both many times)

Thanks for your answers Michel

Hi, i received a mail with an attached eml-file, which afaik is standard hunderbild email format. It's not possible to open the attached file. Androud suggest a bunch of apps installed on my device but none of them is a mail client. How to open eml with K9/TB? If not allready possible pls implement an eml-viewer. Thank you!

Yesterday I was unable to receive or send e:mails. Thought they fixed it, waited until morning to check in.

My e:mail ([edited] @gmail.com) was just fine on my lap top, but when I looked on my desktop, it was just the same. Can't send or receive e:mails there.

What's the problem now?

[edited phone# from public community support forum] landline

Thunderbird is not downloading messages from any of the accounts and it does not save sent messages When clicking on get messagers from any of the accounts at the bottom where i usualy see the activity, all i see is "connected to the account" but no activity. When writing and sending a message, it sends but it does not save the message in the send folder When trying to save a message in "Draft" folder it does not. I get no error messages either.

I closed and re-open aplication - it made no difference I rebooted the computer - it made mo difference

Please help

Running version 128.4.3esr (64-bit) on Windows 11 Home

Wife had to get a new PC. Thunderbolt won't connect to the server. All the connect info is same as mine, confirmed. The provider confirmed her accouont works by sending message to their webmail. She got it ok on their webmail, but nothing on her PC

I checked out multiple Support/forum posts first, but I found no matches, nor could I find this in the interface.

I just switched to Thunderbird yesterday, due to Microsoft's continually pushing their awful, new Outlook. I'm generally pleased, although I was stunned this morning to find that (when multiple messages are selected on my Android phone) there's no option on any of the More/... menus to Move/Refile all of them at once, if they're going to the same folder. I set one of my swipe actions to Move, but that only works for the individual email I'm swiping on.

Apparently, I have to move every single one separately, which is a pain if you're moving more than one or two. If there's no such option that I missed spotting, *PLEASE* add this to your road map ASAP, since it's a very basic feature to still be missing, for as long as Thunderbird has been around! All essential functions a user can do with one message must be available with multiple ones. Thanks!

While there are over 90 emails on the Comcast server so far this morning, only 1 has been downloaded. I tried repairing the folders but no change. While I can save chunks of email on the server, my import of a zip file of them is not working. This has continued to be a problem for over 48 hours. I am using Thunderbird 128.4.3 under Windows 11 Pro 23H2.

I can see notifications of emails downloading from the server but nothing is posted on my machine. This process repeats each time I start up Thunderbird but no new emails are accessible, either from Comcast or Gmail. Emails are coming in fine on my iPhone but not on to my ThinkPad where I download and store them off the Comcast server.

Two days ago there were thousands of past emails on the server going back to earlier this year but they are all gone now. I have found it impossible to access Comcast's technical support for their help in solving this problem.

11/17/24 It took 3 days but rebuilding of the global-messages database has finished at 6.7 Gbytes. Unfortunately, no change and the Comcast server is filling up.

Any suggestions?

Thank you for your consideration

I edited All Contacts in Thunderbird and Outlook address books, but I still see obsolete autocomplete email addresses when composing email in TB 128.4.3esr running on Windows 11 laptop. What is the solution to find and remove where all autocomplete info resides?