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I am only able to send an email by opening Thunderbird and selecting write.

If I try to attach a file by starting with the file > send to > mail recipient or try to trigger Thunderbird with an email address in a browser or start with a distribution list in the address book, all fail.

All produce the following diagnostic: "Sending of the message failed. The message could not be sent because connecting to Outgoing server (SMTP) localhost failed. The server may be unavailable or is refusing SMTP connections. Please verify that your outgoing server (SMTP) settings are correct and try again."

I do see how easily it is to move an email that shows on my inbox list; right click and then choose move. Once I open the email though I can't find a similar process to move the email to another folder. Is there a way? What I currently do is to close the email window and then right click on the email as is shown on my inbox list.

Thunderbird is shows "downloading 1, 2, 3... of 259", but the messages don't show in the inbox.

Background: I'm on Thunderbird 115.18.0 ESR. Gmail quit downloading pop, despite my having set "allow less secure..." I have a bunch of email accounts, and wanted to get just one working, so I set the others from "pop.gmail.com" to "xxxpop.gmail.com", just so they wouldn't all keep failing as I was testing. I got some message about a problem with folders that I didn't pay much attention to.

I finally realized I'm going to have to switch from "Normal Password" to "OAuth", which I did.

PROBLEM: When I get email, it authenticates and starts downloading 259 messages. Fine. But those messages don't show in the inbox.

I've tried to repair the folder, that made no difference. I tried compacting, that made no difference.

I have recently noticed "random" mail is being added when composing reply. It only happens with Reply (All). New mail or Forwarding is not affected.

To every reply there is added text with "Jane Doe <jane.doe@example.com> = author" (with name and mail of person I know, have in contacts, but have no affiliation to replied mail). It is the same person every time. It happens on all accounts / identities. Happens on both PCs (Fedora and Arch). I do not have account for "Jane Doe" in TB.

I have looked thru all TB settings / account settings, but did not find anything. Changing said contact made no difference, the added text is still the same, so it is not being pulled from the contact. I have no extension enabled. Previous used ReplyWithHeader, when re-enabled this issue is not present.

Where is this "text" coming from and how do I get rid of it?

Thanks for help.

I have three email accounts on my computer, one IMAP and two POP. I need to move these accounts to a new Windows 11 computer. I want all of the accounts on the new computer to be IMAP. So I have two POP accounts containing messages that I need to move to IMAP accounts on my new computer.

When I open the profile folder on my current computer it has a MAIL folder and a ImapMail folder. The MAIL folder contains a Local Folder and a pop.1and1.com folder. Each of these subfolders contains the Inbox, Sent, Trash etc. folders that contain the email messages to be moved to the new computer.

I see lots of information on moving the profile but that doesn't address the POP to IMAP conversion issue or the fact there are three different accounts involved.

I need to get my centurylink emails moved to thunderbird, ( and keep them in my centurylink for now also ) all folders and contacts if possible. NO IDEA how to start the process here after the initial account set up is done. Please , in easy to understand terms if possible, am computer challenged for the most part.

I have a few e-mail addresses in Thunderbird. Something weird is happening. When I send from address A, the e-mails are getting duplicated so that the same e-mail appears in my sent file under adress A and address B. The recipient is getting the e-mail sent from address B, even though I composed and sent it from address A. Any idea what's going on and how to fix it? Thanks.

Wish for my wife's email address also to be with thunderbird rather than plusnet webmail which is ceasing in the future, and prefer both our emails to come into thunderbird

Not having used the desktop Thunderbird in a while I went through and updated passwords when prompted while trying to access emails and it downloads ok but will not send. I get an error message that states log-in to server failed but it's substituting/listing a very old email account/address that is not even list in my current account list.

I followed another thread and searched for prefs.js files and there is only one. Should I delete that or is it even the issue?

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.

As email threads become lengthy they become unreadable. The older emails turn into displaying one character per line. Is this a bug or something fixable on my end?

I am an experienced TB user, but at the moment at a total loss for a solution to my problem.

I use Windows 11 Pro. When trying to click on image attachments for PNG and JPG/JPEG pictures, the behaviour is different: PNG images are displayed just fine in the Windows photo viewer, JPEG images are not. If I open the same images via double-click from the local disk, both open just fine in the same viewer. I have checked the file type settings already and even changed them to always ask me for JPEG images. I get asked just fine and see that TB wants to open the Windows photo viewer for both files types, but while it works for PNG, it does not for JPEG. There is no error message, just nothing happens, at least nothing visible to me.

When trying the same from a new user profile, it works as expected. I tried TB safe mode, deactivating all add-ons, but it still does not work in my main user profile.

I would be glad to receive hints for how to solve or at least debug this. Thanks in advance.

Hi, Syncing one email account on Thunderbird on two computers. Some of my folders sync and others do not show or sync. Some that show and not sync are in italics. How to fix?

It went away for a while but now it is back. When I select the text it usually (but not always) resolves. However it is a pain to keep stopping to do that.

I've tried the existing fixes but they either don't work or stop working after applied.

I can't send e-mails from one of my adddresses in Thunderbird. I haven't changed the password on this account. When I try to send an e-mail it won't send and I get the following two messages. Entering the password again makes no difference. What can I do to resolve this? Thanks.

Sending of the message failed. Unable to authenticate to Outgoing server (SMTP) smtp.aol.com. Please check the passsword and verify the 'Authentication method' in 'Account Settings | Outging server (SMTP)'.

Login to server smtp.aol.com with username xxxxxxxxxxx@aol.com failed.

It's OK, this is now resolved. I just needed an app password from AOL/Yahoo. Thanks.