Thunderbird Community Forum

Most of the questions I have are either not answered at all or not answered in help or in forums and I'm unaware of any responses to questions I've asked. Isn't there any way to get support from a live person? My questions are often quite complicated. When I ask a question, I get dozens of answers that have nothing at all to do with my question and I don't have time to look thru all the answers. When I do see an answer that might be relevant, it either isn't or the answer is far too technical.

For example, I have no sent folder. Cant understand answers that tell how to create one. Need to be able to save my sent messages. Having to cc myself to get a copy of a sent message - stupid situation.

I am switching from Outlook to Thunderbird because of complicated problem with Outlook. Got garbage when imported csv contact file and can't find how to delete a large number of contacts. Reluctant to use your specific Outlook import in case it brings the Outlook problems along.

Really need help with lots of things making the transition. 'bold text'

Need help setting up my domain name with godaddy and Thunderbird email client. need to get DNS Records from godaddy also. Having more trouble with this than I should, I think. I have already setup an email account on Thunderbird with earthlink/mindspring and icloud. No problems at all, in fact, both were very simple. But no so much with the domain name and godaddy. Any assistance will be greatly appreciated.

Currently using Thunderbird v143.0.1 on a Windows 10 Pro desktop computer. Since about 17 July 2025, I have not been able to access all of my Local Folders and/or content messages. There are 39 primary local folders displayed with an additional 27 not displayed. However, by navigating through the User AppData folder structure as follows: C:\Users\Ken\AppData\Roaming\Thunderbird\Profiles\k1fx5scw.default\Mail\Local Folders, I am able to see the missing folders and messages, just not able to access them from within Thunderbird.

Is my problem a Thunderbird setting value or have I run into a physical limitation of the application?

TBird maul ott corrupted. There are a qty of folders in the mail folder with similarr names. Can someone please tell what folders s/b there? Also have 5 TBird Local plus subfolders in my main mallboxo - how do I remove those?

Have tried and uninstalling to get a clean install - it doesn't work!

Sincerely HLA

like the topic says i cant get my outlook acount to work in thunderbird,i read some where that i need to change the settings but since it wont allow me to log in i cant do that. i have no idea what to do.

Please tell me what the difference is between "size on disk" and "user quota"? I don't understand why my mailbox is full when all folders take only 1/5 of the available space. My hosting give me 5GB, a user quota in mailbox is 4.7GB (in the app for computer: the main folder containing all other folders - properties folder - Quota - Storage: 4.7GB), size on disk is 853MB (in the app for computer: the main folder containing all other folders - properties folder - General Information - Size on disk: 853MB), and the weight of all folders is ~1040MB (the sum of the weights of all individual folders in the main folder). None of the numbers match. I understand that the sum of the weights of all folders is probably supposed to be 853MB, that the discrepancy is due to rounding the numbers. I understand that some space may be "lost" from the hosting because installation files take up some space, so I actually have 4.7GB to use, not 5GB. However, I don't understand why my mailbox is full, when from 4.7 GB only 853 MB is used?

An error message is repeating at random times asking to provide credentials for imap.gmail.com. When I select to proceed, a 400 error occurs indicting "the serve cannot process the request because it is malformed. It should not be retried". When I check google, email directly, there does not appear to be any problem with the account. What might cause this problem?

I´ve used Gmail through Thunderbird for many years now, mainly because I prefer your treestructure. After changing laptop I discovered that a new map had entered the tree, which turned out to be Gmail´s map "Important" (Viktigt in Swedish). Important stores ALL incoming mail, now over 3 700! There are "only" under 400 in the Incoming map. If I erase a mail from Important it will also be erased from the Incoming map, and vice versa. Important should be for me to decide if a mail should be temporarely stowed there. Can you tell how to clean out only the Important? Best regards and thanks

When you install Thunderbird it gives you "Extra Folders" Such as "ALL MAIL" "IMPORTANT" and "STARED" my question is can I delete these and not delete the email messages they contain? They contain some very important email which are in my other folders and I do not want to lose them,, So if I delete them does it delete the emails that are in there and also in other folders?

Thank you very much

Dr Dennis M Knable dmknabke@gmail.com

I converted to Thunderbird 128,11.1esr in May 2025. My address book did not migrate to the newer version and I don't have the old one. Also, I don't know how to return to the previous version of Thunderbird.

When I delete an email message, they do not go to Trash, they just disappear. I have used TB for several years but this started happening just recently. I can right click on a message and Send To to Trash, or drag and drop, and both those and work. I have went through all the settings I can find, and don't see any obvious problems. I did find a "fix" from 2023 that involved deleting the Smart Mailboxes folder and restarting TB but that that didn't help.

(1) Over the past year (maybe more?) folders move in Thunderbird seemingly by themselves. Which folders move is random. Then message filters don't work properly so the filter is unchecked until I move the folder back where it should be and reenable the filter. (2) Occasionally folders disappear completely, so I have to recreate and repopulate them. (3) Sometimes filters are disabled with no apparent cause. (4) More recently, Thunderbird filters can't find folders (though they appear to be in the correct place) so the filters also get disabled. Reenabling the filter doesn't help, and I have not found a workaround for this. Seems to be more and more frequent. (5) Yesterday whole folders were empty of messages that had been there the day before. One folder (on a W11) hasn't any messages for the last month, though on MacBooks the filter that feeds it is working OK.

I am not doing anything to cause this. I suspect it is a setting that either Mozilla or Comcast or Microsoft has changed. What can I do to stop this without having to switch to a different email system entirely?

Hi —

I'm trying to connect to my GoDaddy hosted Outlook email account without much luck.

I have the configuration I need from them, which I've tried in Thunderbird; however, it's not working. Could you please advise whether the requests are making it through to you and, if so, what I'm doing wrong?

I've attached my configuration.

I would really appreciate any help.

Alex :)

I am trying to set up for a friend the Thunderbird email client for his BT internet account but am encountering problems.

When using the BT recommended settings: POP3 settings Incoming Mail Server: mail.btinternet.com Port: 995 SSL Encryption: SSL/TLS Username: email address xxxxxxxx@btinternet.com Password: btinternet password SMTP settings Outgoing Mail Server: mail.btinternet.com Port: 465 SSL Encryption: SSL/TLS Authentication: btinternet password Username: email address xxxxxxxx@btinternet.com Password: your btinternet password

I receive the message “Unable to login in at server. Probably wrong configuration, username or password.

However if I change the POP connection security to “None”. All is well.

Can somebody please advise.

Thank you.