Thunderbird will not send or receive. I use eM Client which works

I just can't get Thunderbird to work. Will not send or receive emails. I had chat gpt help, still nothing. I tried last year when I had windows 10, still didn't work. Gu… (read more)

I just can't get Thunderbird to work. Will not send or receive emails. I had chat gpt help, still nothing. I tried last year when I had windows 10, still didn't work.

Guy

Name Thunderbird Version 152.0 Build ID 20260612011159

[edited email from public] @gmail.com

Open

Unable to log in at server. Probably wrong configuration, username or password.

I am trying to migrate my Thunderbird account from PC Windows 10 to a new PC Windows 11. The installation selects my provider and settings correctly but when I try and s… (read more)

I am trying to migrate my Thunderbird account from PC Windows 10 to a new PC Windows 11. The installation selects my provider and settings correctly but when I try and sign in, I get the above message. I have not the first idea where to start there. any help would be appreciated. I still have a copy on a windows 11 laptop that I can use to enter settings, but I can't get that far with the installation. Any help would be greatly appreciated.

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Inbox settings/configuration

The majority of emails going to my inbox are being automatically moved to trash when I exit. I want to return to all emails going to my inbox and I manually make the det… (read more)

The majority of emails going to my inbox are being automatically moved to trash when I exit. I want to return to all emails going to my inbox and I manually make the determination if its trash or not

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Archives not working across all accounts

I use Thunderbird for three accounts; the business I own, my other work, and my personal account. Everything was working smoothly until we migrated the business I own fro… (read more)

I use Thunderbird for three accounts; the business I own, my other work, and my personal account. Everything was working smoothly until we migrated the business I own from Namecheap to Zoho and added it back to Thunderbird. I have two accounts on Zoho, a role-based group account (info@mydomain) and a user account (myname@mydomain). It still shows up as three accounts, on my left folder pane, with those two emails set up as identities within a single account. Today I have been trying to archive emails and it is not working across any of my accounts, not my other work nor my personal account. The archive button simply does nothing. I tried changing the settings in Copies and Folders- everything is set up right. I looked in the Config editor and saw that archive_enabled and three other configurations only existed for one of the four identities and were completely missing (not just switched to false) for the others. I added those configurations back, but nothing is working. What happened? And how do I fix it?

Open 1

Right-click to email a photo not working

Returned from a 1-month trip and my Windows11 would load - repair didn't fix it, so I had to reload Windows. Now I'm unable to right-click on a photo and send it via my T… (read more)

Returned from a 1-month trip and my Windows11 would load - repair didn't fix it, so I had to reload Windows.

Now I'm unable to right-click on a photo and send it via my Thunderbird email. When I right-click on 'Send to', there's no email option showing.

Thanks in advance,

Scott

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Connection Problem

I tried to connect my user on my Online Accounts on Linux Mint, but it said: Authentication Failed, so i tried to open my accounts and send a message to myself. The messa… (read more)

I tried to connect my user on my Online Accounts on Linux Mint, but it said: Authentication Failed, so i tried to open my accounts and send a message to myself. The message is sent and it appears a little window that says: Your Messages was sent but a copy was not placed in your sent folder (Sent) due to network or file access errors. You can try or save the messages locally to Local Folders/Sent-(my e-mail name).

Same happens with Troubleshoot Mode and I don't think it's a connection error, so what is the file access error in here?

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Force TLS Version Not Working

Hi I have a problem with Thunderbird which might be a bit niche but here goes... The first attempt at sending an email fails as TLS Record Layer v1 is used, the mail serv… (read more)

Hi

I have a problem with Thunderbird which might be a bit niche but here goes...

The first attempt at sending an email fails as TLS Record Layer v1 is used, the mail server sees this and hard resets the connection so sending halts. See attached Wireshark trace screenshot "Failed".

If I retry the send again Thunderbird uses TLS Record Layer v1.3 and the email goes out ok. See attached Wireshark trace screenshot "Success".

If I send another message immediately no problem but if I wait 20-30 minutes the above cycle happens again.

I have set the minimum TLS version in the config to 1.3 (option 4) and restarted Thunderbird but this has not changed anything.

Any ideas how I can fix this? It's a pain because automated replies don't work.

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emails move on their own from inbox to trash folder

my emails whether they are read or not move on their own from the inbox to the trash folder without being prompted. I have disabled all spam filters and this still happen… (read more)

my emails whether they are read or not move on their own from the inbox to the trash folder without being prompted. I have disabled all spam filters and this still happens. I have to manually move them back to the inbox more than once per day. Help! I have had a lot of problems with Tbird since having to re download the program since my last hard drive failed. Thanks Marc

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High CPU and slow response during Thunderbird search 1- 40.12.0esr (aarch64)

Hi All, Thuderbird 140.12.0esr (aarch64) iMac 24Gb M4 Chip macOS Tahoe 26.4 When I request a search through Unified Folders Inbox for 10 email addresses using Quick Fil… (read more)

Hi All,

Thuderbird 140.12.0esr (aarch64)

iMac 24Gb M4 Chip macOS Tahoe 26.4

When I request a search through Unified Folders Inbox for 10 email addresses using Quick Filter, CPU goes to 80% or more, and response is 10-15 seconds. Main search appears to be ok. Only add-on was a printer service but has been disabled and problem still remains. In troubleshooting mode, search still causes high CPU, even though I can only search one email address. Just started about 2-3 days ago (around 17-18 June).

Any ideas?

Thanks.

Open

Unable to setup Email with Apple mail ( @Mac.com ) address, help needed please.

I have thunderbird downloaded on my PC and would like to be able to access my emails normally sent to my Apple address ending in @Mac.com. I have tried to set this up on … (read more)

I have thunderbird downloaded on my PC and would like to be able to access my emails normally sent to my Apple address ending in @Mac.com. I have tried to set this up on my own with no success, so I turned to ChatGPT and spent 4 hours going down the rabbit hole that is AI. Total waste of time!!!! Now turning to, probably, where I should have gone to in the first place, you guys!! I don't need to access calendars or contacts etc just the email. Can someone who maybe has done this using the @Mac.com email address give me some step by step instructions on how to do this? Any help would be greatly appreciated thanks👍 Kev

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Exchange - Add-on required --> log-in not possible

Dear Support, we can not log-in with our office 365 account. We need to log-in with "Exchange Add-on erforderlich", but we receive this error message. I attached you som… (read more)

Dear Support,

we can not log-in with our office 365 account. We need to log-in with "Exchange Add-on erforderlich", but we receive this error message.

I attached you some screenshots. We do not understand why this error appears.

When we log-in with option "Exchange" then it works but we need the other option because we need to have the sub-folders.

Please help us.

Best regards, Andreas

Open 1

All of a sudden my emails are permanently staying in bold in my folders

All of a sudden my emails are permanently staying in bold in my folders, in Settings >Reading & Display Ive tried changing the 'Automatically mark messages as read… (read more)

All of a sudden my emails are permanently staying in bold in my folders, in Settings >Reading & Display Ive tried changing the 'Automatically mark messages as read radio buttons and quit etc and the same issue is happening, please advise

Open 2 1

messages added to sub folder disappear

Thunderbird 140.7.1 i have a subfolder called "purchases" which I add to on a regular basis. Suddenly no messages appear after May 2014 I have logged in directly to the … (read more)

Thunderbird 140.7.1 i have a subfolder called "purchases" which I add to on a regular basis. Suddenly no messages appear after May 2014 I have logged in directly to the mail server, and all the missing messages are definitely on the server. I have checked the local filters, none are set. I have tried properties/repair. I have tried removing ~/.thunderbird/xxx/ImapMail/mail.myserver.com.au/INBOX.sbd/purchases.msf

Could it be a problem with dovecot indexing on the server? all the other subfolders seem to work fine. It's just this one.

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trying to export thunderbird to galaxy s25

The export says to hold over pix. Computer says files are exported and continue on phone but phone is still stuck on importing. I don't know where the ap window is but I … (read more)

The export says to hold over pix. Computer says files are exported and continue on phone but phone is still stuck on importing. I don't know where the ap window is but I downloaded the latest version

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Total collapse of the system

I have four different email accounts. A week ago, all incoming and outgoing traffic suddenly stopped . Webmail works normally. I have no viruses, trojans, etc. I deleted … (read more)

I have four different email accounts. A week ago, all incoming and outgoing traffic suddenly stopped . Webmail works normally. I have no viruses, trojans, etc. I deleted one of the accounts and tried reinstalling it. I can't do it anymore. The system keeps responding: "Unable to authenticate to the server. Username or password configuration may be incorrect." But they are all abolutely correct. I don't know what else to do. Any clue? Thanks

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How to condense recurring events in calendar search?

I just installed ESR 140, coming from 115 (Win7). A change I find very bothersome is that when I now search the calendar (All Events) the results return a separate entry … (read more)

I just installed ESR 140, coming from 115 (Win7). A change I find very bothersome is that when I now search the calendar (All Events) the results return a separate entry for each occurrence of a recurring event instead of just the one definition of the recurring event. How do I make the search behave as it did previously? I have dozens of recurring events that recur weekly and have been using Thunderbird for over a decade... I am staring at hundreds of duplicate search results which also temporarily freezes the app while they load in. This is not a functional design.

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