Showing questions tagged:

Sent folder shows 2,669 messages, but displays No message found. How do I fix this?

I didn't knowingly make any changes in Thunderbird, but my Sent folder says there are 2,669 messages in the folder, but displays an envelope and No message found. I upgra… (read more)

I didn't knowingly make any changes in Thunderbird, but my Sent folder says there are 2,669 messages in the folder, but displays an envelope and No message found. I upgraded to the latest version. How do I fix this?

(I haven't had time to move all functions to another drive.)

Extech

Open 16 218

Cannot send emails from Sympatico with T-bird anymore....

Hi. Since the last 2 updates, my Bell sympatico email through T-bird cannot SEND anymore emails (No errors are given but the email never comes through). I can receive ema… (read more)

Hi. Since the last 2 updates, my Bell sympatico email through T-bird cannot SEND anymore emails (No errors are given but the email never comes through). I can receive emails without issue and when I use another tool (like Outlook or go directly through my browser, the sympatico emails come through) I attached the settings for the SMTP in a screenshot if that could help.

Any idea how to fix this?

Tx, Robert Z.

Open 6 72

Thunderbird will not download emails

Hello, Everything working just fine last night. Wake up and Thunderbird will not retrieve emails. Remembered this old message I got so I went through and deleted my seco… (read more)

Hello,

Everything working just fine last night. Wake up and Thunderbird will not retrieve emails.

Remembered this old message I got so I went through and deleted my second email address, didn't help.

https://support.mozilla.org/en-US/kb/thunderbird-and-yahoo

Checked all settings compared to Yahoo, still won't download messages. I can even send a message with my current settings no problem, and it does login, just won't retrieve emails. Gives me a connection timeout.

Anyone have any ideas?

Open 5 63

Order of manually sorted folders keeps changing after restarting Thunderbird.

I have multiple email adresses for different purposes, but all of the incoming emails are sent to the Local Folders inbox, where I have separate folders to save emails fo… (read more)

I have multiple email adresses for different purposes, but all of the incoming emails are sent to the Local Folders inbox, where I have separate folders to save emails for the each purpose. I am able to manually sort the folders in the order that I prefer, however each time I shut down Thunderbird and then restart it, the folders end up in seemingly different random order each time. Is there a way to ensure the manually sorted order of the folders does not change?

Open 6 45

"Run Now" is greyed out when using filters

When using message filters "Run Now" is often greyed out after running a filter and remains greyed out after the filter has completed filtering. (Hung up?) This does no… (read more)

When using message filters "Run Now" is often greyed out after running a filter and remains greyed out after the filter has completed filtering. (Hung up?) This does not happen if the filter does not find any matching messages. Clicking on another filter and then returning to the first one returns the "Run Now" button to active (not greyed out). Not sure, but the problem might be associated with filters that copy a message file to a Local folder, or delete messages, or move messages to Trash, or all three. I'm stumped. The problem started recently and I'm not aware of any changes I made to Thunderbird.

Open 3 36

'Unable to connect'!!!

It's been almost a week now, and my 2 Microsoft email accounts will not connect to Thunderbird anymore. All was fine for years, but something changed that I can't figur… (read more)

It's been almost a week now, and my 2 Microsoft email accounts will not connect to Thunderbird anymore. All was fine for years, but something changed that I can't figure out!?! I have gone to my Microsoft email server and checked that my passwords still work. I even updated one and it works on Microsoft server but not Thunderbird's!?!? I even deleted one email account from Thunder bird to re-install it, but when I tried a fresh re-install Thunderbird still won't connect to Microsoft server??? I'm at my wits end, and may abandon Thunderbird completely if someone there doesn't help me connect!!!

Open 6 36

The carddav address book is not syncing.

Thunderbird is used on a domain network of 100 computers, all connected to a Carddav address book. About 10 computers have stopped syncing their address book. Reconnectin… (read more)

Thunderbird is used on a domain network of 100 computers, all connected to a Carddav address book. About 10 computers have stopped syncing their address book. Reconnecting the address book doesn't help. Newly added email addresses don't sync. Everything is fine on the other computers, all running Windows 10.

Open 18

Thunderbird trashed my inbox emails on iMac Sonoma. Need to recover Inbox.

Thunderbird 149.0.2 trashed my inbox emails on iMac Sonoma. Need to recover Inbox, about 2-3 thousand messages. When I saw it put all inbox into trash, I tried to direct … (read more)

Thunderbird 149.0.2 trashed my inbox emails on iMac Sonoma. Need to recover Inbox, about 2-3 thousand messages.

When I saw it put all inbox into trash, I tried to direct the files back to the Inbox but Thunderbird then deleted all trash. HELP.

I am currently avoiding putting anything into trash.

<X@nutechcapital.com>

(PII redacted by moderator)

Open 18

Lost Thunderbird connectivity on Spectrum today 5/9/26

All of a sudden today I'm getting the message "could not connect to server mail.twc.com; the connection was refused." So, I'm unable to send/receive email. I called Spe… (read more)

All of a sudden today I'm getting the message "could not connect to server mail.twc.com; the connection was refused." So, I'm unable to send/receive email. I called Spectrum and they said go to Spectrum.net. Yes, I was able to get my email that way, but that eliminates the ease of using Thunderbird. I've read all the messages about this issue, including changing various settings, but none have helped. Spectrum says nothing has changed on their end and it must be a Thunderbird issue. My current settings are: Incoming: Server Type: POP Mail Server Server Name: mail.twc.com Port: 110 User Name: [my email address] Connection security: None Authentication method: Password, transmitted insecurely

Any other suggestions?

Open 2 1 18

I just deleted all my email archives

I'm using TB 150.0.2 on a Mac with the latest update of MacOS. I just deleted all of my archived emails, thinking it was stuff that I had sent to trash. I.e. I deleted a… (read more)

I'm using TB 150.0.2 on a Mac with the latest update of MacOS.

I just deleted all of my archived emails, thinking it was stuff that I had sent to trash. I.e. I deleted all archives, then emptied trash. Only after I did that did I realize that I had deleted things I want to save.

I'm pretty sure there's no way to undo emptying the trash, but I use Time Machine to back up. If I open time machine and go to the most recent back-up, I should be able to get everything back, right?

What folder (or folders) should I restore from a Time Machine back-up?

Open 3 18

Is Thunderbird designed to work well with iCloud Mail on Windows 11 PC ?

I am trying to find a program that allows me to use all the features of iCloud Mail on my Windows 11 OS . Is Thunderbird compatible with iCloud Mail ? I tired installing … (read more)

I am trying to find a program that allows me to use all the features of iCloud Mail on my Windows 11 OS . Is Thunderbird compatible with iCloud Mail ? I tired installing and using Thunderbird but it seemed that some of my sent emails were not delivered. So I uninstalled Thunderbird.

Open 18

in den Ordnern veschwinden die mails

in den Ordnern veschwinden die mails, kommen schon mal wieder und sind dann auch mal weg.. Betrifft nur emailadresse arcor. quasi abruf bei vodafone. port und so sind ric… (read more)

in den Ordnern veschwinden die mails, kommen schon mal wieder und sind dann auch mal weg.. Betrifft nur emailadresse arcor. quasi abruf bei vodafone. port und so sind richtig eingestellt. habe auch deinstaliert und neu aufgespielt keine änderung. die konten über gmail laufen ganz normal. finde den fehler nicht.

Open 13

Emails set to wromg time zone

I returned to London from Singapore on Tuesday 28/4. Today (4 May) I noticed that all my emails show Singapore time (BST+7) in the Inbox display in Thunderbird on my Wind… (read more)

I returned to London from Singapore on Tuesday 28/4. Today (4 May) I noticed that all my emails show Singapore time (BST+7) in the Inbox display in Thunderbird on my Windows laptop although the time shown for emails is correct on my mobile (iPhone).

I checked calendar in Thunderbird settings and it's set to "Use system timezone" but the time on my laptop clock is correct. The time zone in my Windows setting is also correct (London).

When I open an email it shows the correct time.

Any thoughts?

Open 12

Add New Folder

In my INBOX folder I have a number of subfolders that I use to filter my client email into. Lately I can't remember how to create and add anew folder to the INBOX. I used… (read more)

In my INBOX folder I have a number of subfolders that I use to filter my client email into. Lately I can't remember how to create and add anew folder to the INBOX. I used to simply click on either my account name (IMAP)or the INBOX folder (I can't remember which one) then right-click and add new folder.

Also I have noticed that the dialogue window seems to be cutting off two buttons in the lower edge of the window (see image attached).

Open 10

Problem using public key for s/mime

I have tried using s/mime encrytpion for the first time. I have created 3 different accounts using the same CA on 3 different devices. All three can communicate with each… (read more)

I have tried using s/mime encrytpion for the first time. I have created 3 different accounts using the same CA on 3 different devices. All three can communicate with each other using the s/mine encryption. I used multiple methods - sending a signed email first and then encrypted+signed, creating a .pem file with public key - importing it in Manage certificates/people and sending an encrypted+signed email. Sending an encrypted email from-to the same address also works. What I can't seem to be able to do is use any other public keys. I have a list of companies and their keys, but whether I use a file downloaded from their site or copy the key to txt and then make a .pem file out of it, as I did with my addresses, I can't send an email that is both encrypted and signed. I get "end-to-end encryption requires resolving certificate issues for ..." and the recipient status "not found". They specifically don't want to send a signature first and then encrypted+signed, and I am stuck trying to figure out what I am doing wrong. Any help is greatly appreciated.

Open 9

my emails disappear for no reason, and trash can't be emptied. Why?

For the past 2 days, either my inbox is empty on startup, or if I see my messages, they disappear completely once I open any folder. Also, I have over 2400 messages in Tr… (read more)

For the past 2 days, either my inbox is empty on startup, or if I see my messages, they disappear completely once I open any folder. Also, I have over 2400 messages in Trash, and can't empty the folder. No settings or connections were changed. What gives?

Open 9

Is there a way to assign tabs in the tool bar to specific inbox folders similar to how Gmail USED to do it?

For the last 2 months I have been working to configure Thunderbird to fully replace my Gmail UI usage after their recent change to workspace options and using data to tra… (read more)

For the last 2 months I have been working to configure Thunderbird to fully replace my Gmail UI usage after their recent change to workspace options and using data to train gemini. When you deactivate those gmail features the first thing you lose are tabs for your Inbox, your Updates and your Promotions.

So far I have used tags, ThunderAI, Ollama and a locally hosted LLM to replicate the sorting of my inbox, but now I would like to be able to configure the Thunderbird UI to allow separate tabs in the menu bar for different folders, in this case Inbox, Updates and Promotions. With Inbox still being the gmail hosted main inbox and Updates and Promotions now being local folders stored in my local thunderbird installation.

Can the Thunderbird UI be configured to display folders as tabs as a default setting? I tried the "folder selection" button under customize on the toolbar but that just gives me a drop down, which is not what I want.

Open 9

Synchronization & Storage settings for EWS accounts

I'm using Thunderbird with an Office 365 business account via EWS. I'm trying to reduce the amount of storage used on my local machine by setting the "Synchronization &am… (read more)

I'm using Thunderbird with an Office 365 business account via EWS.

I'm trying to reduce the amount of storage used on my local machine by setting the "Synchronization & Storage" setting to 3 months instead of downloading everything, but every time I change the setting it doesn't stick.

I'm on Thunderbird 150.0.1 (Windows).

Open 2 9

Thunderbird has become unusable

Thunderbird stopped working a week ago, and I've wasted HOURS trying to uninstall and reinstall the app in hopes of getting it to work. Best I can do is get it to run, a… (read more)

Thunderbird stopped working a week ago, and I've wasted HOURS trying to uninstall and reinstall the app in hopes of getting it to work. Best I can do is get it to run, accessing my gmail account, but I'm interrupted repeatedly by screens asking me to choose my gmail account, followed by a screen that asks me to click on a 'give access' button that appears nowhere on the screen. Such a shame that you folks and Google have collaborated in a way that makes a very nice app completely unusable. If you and Google can ever get the access issues resolved, pls advise via email and I make one last attempt to get the app to work: rws.pgh@gmail.com.

Open 4 9

I have, in effect, installed Thundebird on a new computer, but my attempts to setup my account aren't working.

I have created an account instance in account settings, and the "Test connection to server" says it is OK, but when I go to the mail tab the get messages button and New M… (read more)

I have created an account instance in account settings, and the "Test connection to server" says it is OK, but when I go to the mail tab the get messages button and New Message are grayed out an NO accounts are listed in the "folders" area. Not does it ever ask for my password to the SMTP server I have selected. I have an existing account with my own email service (Hover), and MUST connect to that. This is critical, as I need my e-mail to accomplish necessary activities.

Open 8 9