Thunderbird Community Forum

I used to use Foxmail as my email client. When writing emails with oversized images, I could right-click the image and select the "Auto resize it to proper size" option to make the image easier to read. However, I can't find the same function in Thunderbird. Do I need to use an extension, or is there another way? Can someone please help me? It's really frustrating.

I had to recently change my password on my shaw email account. Now thunderbird won't download my emails. I changed the password in the account settings to match the shaw email account password but I keep getting an error message: "Host contacted, sending login information..." and then after a long delay the error message reads "Login to server pop.shaw.ca with username ... failed". Any idea what I'm doing wrong by simply changing the password? I think this happened before and some wonderful human on this forum told me I had to put something before the password or click/unclick a particular box, but I can't find that old answer to my previous question. Thanks in advance for any help someone can offer!

I have forgotten my password and even my username in Thunderbird mail. When I try to get a new password, they send it by email. Since I cannot get into email I do not get the code. I want to completely remove my account from the server so I can start fresh. This takes me to username and email + password. I enter the new details and the server having not deleted my account sends, "Incorrect email or password. This is why I want to delete it completely so I can really start a fresh setup. I am using Ubuntu 2404.

Thank you for your help.

Rod.

I want to configure an automatic response to emails that have been forwarded to me from a particular address. I have created a template for the response and it is saved in the Templates folder. I then attempted to create a Filter Rule to send the response. I believe there should be a Reply with Template option in the Perform these action pull-down, but there isn't. I've attached a screen shot to illustrate this.

I'm using Thunderbird 154.0 and Windows 11. Is there a new way of achieving my objective?

The 'new' Thunderbird doesn't allow a password entry in server setup and will not prompt me for one. It pops up a Windows toaster message saying it can't connect - obviously. I set the advanced options to not remember the signon but still no success.

With a new Windows11 install on a new drive, I can't get my saved emails, folders, and passwords to my new Thunderbird installation. I tried copying the profile folder from my old Windows10 per instructions, but Thunderbird doesn't recognize it on this new Windows11 install.

Every 10 minutes, your Thunderbird app generates an attachment (nmsa) that McAfee deems a Trojan and quarantines it. I get 15-20 popups from mcafee every hour. If I close Thunderbird it stops. What can i do to stop this from happening?

Trojan:Win/SuspiciousAttachmentScript.a

C:\Users\ken_s\AppData\local\Temp

Back when W110 went to w11 I got a new computer and was given great directions here to back up my TB profile by searching %appdata% and copy the thunderbird folder to external source. That file is 198 MB. I do this every month now ..It is my understanding it saves my profile and all emails including local ones. Now in Aug 2026 when i copy this file, I am getting an error a file is too long and have no choice but to skip that file..I will attach a pic of the error. Is this back up ok to use or is it corrupt because of the error?

I also found in TB help there is an export feature in TB to a zip file but that .zip is huge..I did one just in case. I think you just open TB>select hamburger menu three lines on top right>tools>export. I did that back up/export also today and that is a .zip file folder that is less properties like 175 MB.

So now which way is the correct way to keep a safe copy of my TB in case my computer crashes or i have to put on another pc?

I recently (unwisely) refreshed my Windows 10. I had to relaod Thunderbird, but when I tried to reinstal my previous profile, I couldn't do so. I've tried using profile manager. but it only seems to recognise two of the six or so profiles that exist in my profile folder. This means I can't access several years' worth of emails - I need to access these for invoice and work purposes. What is really frustrating is that I can see the profile I need in the profile folder, and all the emails seem to in the Mail/popmail/Inbox folder (all with a much smaller MSF. file of the same name). I've tried importing the profile into Thunderbird, but that doesn't work, it just imports the mailbox with no subfolders. A responder called David has already kindly provided advice (many thanks, David), but unfortunately the solutions haven't worked. Can anybody help?

What are the memory limits for Thunderbird. Currently, I get this message when I try to save and email "Unable to save your message to local folders. Possibly out of local file storage space." Please see attached screenshot.

I am not out of storage space.

Any suggestions?

Thank you.

Tom O'Brien

WHEN I ENTER AN ITEM IN THE TB CALENDAR IT OFTEN (NOT ALWAYS) SHOWS UP ON MY I PHONE CALENDAR. HOWEVER WHEN ENTER SOMETHING ON THE I PHONE IT NEVER SHOWS UP ON TB

I see others are having this same issue with no resolution in sight.

The company I work at is unable to print anything through the print preview in Thunderbird. The current work around is to download, open, then print the file.

Does anyone have any further information on this subject besides going through separate avenues to fix the problem?

Thanks!

Thunderbird not connecting to server. It says timds out and an error occurred connecting to mobile.charter.net. I can neither send or receive emails. This started 8/20/2026

After moving the data file to a new windows 11 machine, the Password Vault no longer remembers passwords. How do I fix? Online searches have told me to delete several files in the Profile folder. I have done this several times w/o success. What are my options other than to find another email client? Thanks, Hank

I don't know where to start. Ever since the update to version 154 I've been having one problem after another: switch from Comcast to Yahoo causes problems with THunderbird, slow indexing, arbitrary folders showing up in different email addresses (confuses my account with my wife's' some of that may be problems dealing with gmail issues), lost email folders after attempted repairs. Three months ago there were none of these problems. I have not yet tried switching back to the last updated version of 153, but 154 does seem to have many more problems. I've run troubleshooting.

I am not a computer expert and there is only so much time I can devote to this, but even computer repair services I've called are at a loss and very pessimistic about the ability to repair things. In all the years (over a decade) my wife and I have used Thunderbird, there have never been as many problems as have surfaced in the last two months. Maybe the best that can be done is to hope that updated versions will gradually fix these issues. I will say that my Macbook Air (M2 chip) has far more problems than my iMac (M1 chip). I have checked and rechecked all server settings (smtp and imap). Although more cumbersome, things perhaps work better if I just stick to webmail options.

I updated to TB154 recently and find that connection to my Outlook calendar via Owl no longer works. In past updates I have been able to turn Owl off and then on again, sign in to Outlook and all is good. This time I was told that I had to unsubscribe from the calendar and then re-subscribe. Unfortunately, nothing that I am trying (sharing, publishing & etc.) is working. I remember that the properties window showed the calendar location as owl:// but everything that I have tried to add after this doesn't work either. Thanks for your assistance.

Добрый день.

При пересылке полученного письма с вложениями от абонента (у абонента почтовый клиент от компании 1С) вложения исчезают. Выяснили, что когда письмо отправляется из 1С "Content-Type: multipart/mixed" , Thunderbird не распознает данный параметр и поэтому удаляет вложения.

Подскажите, какие настройки сделать в почтовом клиенте, чтобы вложения не пропадали?

С уважением, Дмитрий