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Hi there. Have tried everything but still can just receive and cannkt send emails for my personal outlook account that I recently created. Other old outlook accounts are working fine (can receive and send). Basicaly have done everything that sugested here on forum. Please help. Thanks a lot!

On January 1 my desktop version stopped downloading my GMAIL but my other non gmail are still downloading

I use Windows 10 and the version of Thunderbird is 147.0 64 bit

What can I do to fix this?

I quite often get this message, though it tends not to be a problem later "Unable to write the email to the mailbox. Make sure the file system allows you write privileges, and you have enough disk space to copy the mailbox"

One of the solutions seems to be Compact a File. How do I do this?

I decided to try the Send Later feature in Thunderbird. I am using T140esr and the About box says it'sup-to-date although I do see references in the forum to later versions.

I couldn't get it to work at first, but got there in the end. I would like to suggest to the developers that the buttons labeled "SEND NOW" and "PUT IN OUTBOX" be removed. These confused me. If I had wanted to send the message now or put it in the outbox, I would not have clicked the "Send Later" button in the first place. The "Send at ...", "In 15 mins", etc. buttons should be the only ones presented to the user.

It's a useful feature and I can see myself using it on a regular basis to send daily and weekly logs as attachments.

Regards Peter M

I spent hours today with Rogers/Shaw support with nothing but a waste of my time. At the end they blame Tbird and were totally useless in helping. Thunderbird was fully working two days ago and I made no changes to anything. I am using the latest Tbird version. Today I uninstalled it and reinstalled with no change. I hate Rogers/Shaw but want to keep my email ID that I have used for many years.

I suspect this is password issue caused by Rogers but I can't identify it and as I said ROgers support was a waste of time. On the support chat the previous day they said they had a "back end" issue but now say that was fixed.

Thunderbird hasn't saved any of my Microsoft Emails for days and now it won't send. My other accounts (Gmail, AOL, etc.) work fine, however. How do I make the fix so I can send and also sync my Sent emails so they show up! I just get long hold ups and error messages.

I recently updated the computers at my shop. My shop uses an older program Mitchell 1 to process and organize invoices. I have used Thunderbird to email invoice pdfs for the longest time but now after updating I get “ERROR SENDING EMAIL. MAPI RETURNED -2147467259” it’s my understanding MAPI is outdated but I figured Thunderbird would still support this function.

Filters *unreliably* sort the mail into their target files. I have reconstructed the filters from scratch twice, both times with identical, unpredictable results: each filter works properly on the inbox when tested, but each filter only works *sometimes* in the normal course of getting (IMAP) and sorting mail. When getting a batch of mail, some messages are sorted, while others are not. When testing the same filters on the same (still unsorted but already picked up) messages, those same messages are recognized and sorted correctly. The question is: Why are the filters not working reliably during message pickup?

The mail server is running "Debian stable" Dovecot. It seems to work well; I'm not *missing* any messages, but they're not always getting into the right folders. Instead, some messages, and sometimes quite a few messages, may remain in the inbox. I surmise that the problem is in Thunderbird, where somehow the downloading process somehow undermines the sorting process. A queuing issue? A communications-with-Dovecot issue? (The server is in Paris and I'm in North America, but there doesn't seem to be any undue latency that I can detect. The server is not very busy, that's for sure.)

In case it helps: I filter mostly on `DKIM-Signature`, `Authentication-Results`, and `Received` header entries. In a couple of cases, I use `Body`. I'm almost always using "match any" (as opposed to "match all").

My thunderbird email is broken and I cannot interpret the error message. I found a similar problem at https://support.mozilla.org/en-US/questions/1281109, but I have not been able to follow the solution.

The error message is:

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.

When I access my email at ptd.net, using firefox, I can make a full connect. But I cannot connect to email using Thunderbird, which is my preferred email tool.

My hope is to have a dialog in this thread with someone who can walk me through the steps to get thunderbird working. Can someone help?

Jim A

the Thunderbird inbox does not display received emails and does not display new emails.My web host provider,Hostgator, has all the old emails and is receiving new ones. so they are in their files. So the problem is with thunderbird. I have consulted your support and forums, tried troubleshoot mode... When I right-clicked on the input file and clicked on repair the display went blank and the emails vanished....also at midnight

on 1/16/26 I no longer receiving new emails.

your help will be appreciated

Lance

Hello, I have a problem with sending out emails. I can receive them but not send. when I set up an email and click on send, it does the spellcheck then attempts to send it, then a dialogue box comes up with: 'log into server smtp.iprimus.com.au with user name janas_3 failed'. It gives me the options of: Retry, Enter new password or cancel. I have tried using the existing password, and a new one and nothing works. I have contacted my Internet provider, who checked all the account settings, which were correct. Their advice was to contact Thunderbird for support, can you help me please?

Several days ago we inadvertently deleted batches of emails from our two Thunderbird Gmail accounts on our PC and Apple devices. The lost emails were duly recovered but only after having to change my Google password. However one of our Thunderbird Gmail account will not download any new messages coming in. Ultimately we deleted that account from Thunderbird, intending to reinstall it. We deleted the account by pressing the Red button in account settings. We confirmed that messages are received to Gmail's Web page Inbox Now when I attempt to reinstall the account and press Add Account, I get the UNABLE TO LOG IN AT SERVER MESSAGE shown below. The "Your Full Name" I am putting in is the name on the Google account deleted from Thunderbird, and the password I have tried is my new Google password. I have tried the process of not adding in the password until requested to do so but this did not work either. Any suggestions please?

Thunderbird was working fine on my Laptop until yesterday's update. Now I keep getting the above message. There is plenty of desk space and my write privileges haven't changed, If I delete yesterday's messages and try downloading new ones those messages reload. I think my tablet hasn't yet installed the update and is currently loading emails normally. Any help, much appreciated!

Hi there! I and my colleague encounter some bugs with Thunderbird and we would like to seek your advice in regards of the issue.

1. <user a@citizen-systems.com.hk> was supposed to get a cc copy of the email sent by <user b@citizen-systems.com.hk> at Mon, 12 Jan 2026 09:35:19 +0800 but it never reached. The receivers, namely <user c@systems.citizen.co.jp> and <user d@citizen-systems.com.hk>, however, were able to get the mail. <user d@citizen-systems.com.hk> and <user a@citizen-systems.com.hk> are working at the same office and under the same network. Network provider checked the protocol, router, traffic and firewall are working as normal.

2. <user e@citizen-systems.com.hk> found a number of emails that she kept at "Inbox" disappeared on 12 Jan 2026 morning +0800.

She is unable to find it anywhere at her whole mailbox but has to ask the senders to resend them to her.

It would be very much appreciated if you can check and advise how to prevent the issue from happening again.

(PII redacted by moderator)

I have a windows 11 pc with thunderbird 147 installed. It worked until Jan 16th, 2026. I added the account to my Linux pc that has thunderbird 140.5 ESR inststalled and it works fine with the account from the windows 11 pc.