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Address book import is not working after I import it. It says I have 516 contacts. All I see are big grey dots but no information inside them.

I'm exporting from Classic Outlook (2016) in .CSV format.

I can't send anything. I updated at 3 ish and now it says the following : "Sending of the message failed. The message could not be sent because connecting to Outgoing server (SMTP) promail.ptd.net 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 have a message filter that copies every sent item to a local folder when I send it. I want this in addition to the normal sent item placed in the IMAP folder.

This works fine, except that when I reply to an email and the subject is prepended with "Re: ", the copy made in the local folder is not prepended with "Re: ".

Why is this, and how can I make sure the copy in local folders is prepended with "Re: " as it is in the IMAP sent folder?

Thunderbird changes the from email AFTER email sent so user sees email from wrong sender, This since recent update. I have used Thunderbird for many years and have never had this issue before. I've tried fixes on the internet but they don't seem to work.

On my PC Thunderbirds sending/receiving mail says the mail server refused my connection. My laptop works fine. I have duplicated my laptops in/out specifications onto the PC but still nothing works. Spectrum says everything on their end is fine but can't vouch for roadrunner who is the rr in my mail address of ca.rr.com. All this started about 4 days ago. Any ideas on what to try next? Thanks.

I am unable to send emails from Thunderbird. Getting the message: An error occurred while sending mail: Outgoing server (SMTP) error. The server responded: Connection from xx.xxx.xx.xxx refused.

When I check my password under "Tools - Security', I only see a password listing for my 'incoming' server [that I do not have a problem with].

My out-going server setup has "Authentication" as normal password. When I try to send an email, Thunderbird does not ask for a password. Is it possible the error message refers to lack of a password? If so, is there anyway to manually add an STMP password to Thunderbird?

Hello:

I use Thunderbird for work. I have several email accounts configured in it, including Gmail, my company's email, and Outlook. I recently added a new Outlook account, and I haven't been able to send a single message. The error I'm receiving is the one described in the title. It's worth noting that I have another Outlook account working perfectly. I've tried every solution I've found online, and none of them have worked, including enabling SMTP in the account settings, making sure OAUTH is enabled, using smtp.outlook.com or smtp.office365.com instead of smtp.mail.outlook.com, enabling two-factor authentication, changing my password multiple times, etc.

I just upgraded (reluctantly) to Win11 on my desktop, and my POP Thunderbird account did not survive the upgrade. I had to switch over to a new IMAP Thunderbird, losing all of my POP folders (which are still on my disk). Just not, apparently, accessible.

Anyone have info on how to re-access or somehow get them into my IMAP install?

How can I filter the list of emails in a folder? There's this 'Ctrl-K' search box but does nothing like I want. I just want to filter the displayed list of emails by correspondent. The Ctrl-K system is a baffling mystery, AFAICT you always get a search for 'mentioning' of the search string, whereas a filter for correspondent would be useful too.

Hi, for years I have had subfolders I created under a major folder called Archive [not the Archives folder you have]. The subfolders have names of people or organizations or topics and are in alphabetical order. Until this year, when I created a new subfolder, it automatically sorted to its alphabetical place [or, perhaps I had the option of sorting when I right clicked the major folder]. But for some months, I no longer have that option and have to laboriously drag the folder into its place among hundreds of other subfolders, which I find difficult. (Sorry--I have aged.) I must have missed some new thing I have to do--???

I entered a question about Thunderbird an hour or two ago (Jan 20, 2026). I started to look for a response, but I cannot find my question on the forum.

I entering this post for two reasons:

  1) I want to see if it gets posted and is visible to me
  2) I hope someone can help me find my post that I entered earlier.

So here goes, I am posting this

Jim A.

Good day,

On one of several computers we use to access email when we try to 'Get Messages' Thunderbird doesn't even attempt to connect to the mail server on two of the accounts set up. All four other computers access the servers just fine. In trying to resolve the issue on the recalcitrant computer I created a new email account with the host and added it to Thunderbird using the 'Add Account' wizard, and changed IMAP to POP3. Once the account was created it logged in and received the 'settings' email from the host, and I was able to send an email to another account. I could see the activity reports for the new account in the status bar. However no reports on the status bar for the original two accounts. I've triple checked port settings etc and up until a few days ago Thunderbird worked just fine on this machine. No changes have been made to the original settings. Prior to adding the new account, when asking to get messages the only report on the status bar was 'Done' without any information reported about contacting, downloading etc. The Done message showed up immediately upon clicking the Get Messages button.

Adding the new account and it working properly tells me my settings are correct and the install of Thunderbird is working. Thank you in advance for your suggestions.

John

I've come over from Postbox as that app is no longer being supported. In Postbox there was one file (panacea.dat) that controlled how many old locations you would see in the Move To menu. Once the number of items got to be a bit too muchj, I would delete that file and it would clear the Move To menu item. Is there such a file in Thunderbird that controls the Move To menu, or can it somehow be controlled by a setting in Thunderbird? Thank you.