Thunderbird Support Forum

I'm a long-term Outlook user looking to move from Outlook 2013 (now unsupported by MS) to Thunderbird. I've looked at all Mozilla documentation, as well as Google Search and can't seem to find a full understanding of the migration process. I have tried to manually do so using the Tools>Import in Thunderbird, but I continually get an error message that "the current mail client cannot fulfill the messaging request". (Yes, Outlook is my default mail client).

Also, I'm now seeing the following on my Thunderbird home page: Secure connection failed live.mozillamessaging.com uses an invalid security certificate. The certificate is not trusted because the issuer certificate is unknown.

Can anyone help an Outlook refugee? Thanks in advance.

Julian

Dear community,

I use a MacBook Air (software version 13.6.1 (22G313)) and Thunderbird as my mail client (software version 115.11.1 (64-bit)).

I have set up approx. 8 mail accounts, but for a few weeks now I have had the problem with my google mail accounts that mail with somewhat larger attachments (approx. 5MB) is often (not always) sent, but no copy is saved in the Sent folder.

I get the following error message from Thunderbird:

The message was sent, but no copy was saved in the Sent folder because there were problems accessing the network or files (translated from German, original English error message may differ slightly)

Security and authentication settings of the affected IMAP and SMTP accounts:

SSL/TLS OAuth2

Changing these settings was not successful, sending mail was no longer possible with other security settings.

A request to google support did not help, I was referred to Thunderbird support.

Perhaps someone has an idea for me as to what the problem could be?

Thanks a lot and a nice day to you all! Hendrik

I had to purchase a new computer and the set-up did not transfer my account of mozilla thunderbird files and e-mails. I downloaded the mz app and followed the instructions to Set Up Your Email Address and the Configuration was found in Mozilla ISP database. So when I selected Done, the prompt read: "Could not get OAuth2 details for hostname=imap.comcast.net." What do I need to do to retrieve my files and e-mails in the mozilla thunderbird website and transfer them to my new computer? Thanks

Hi. My hard drive crashed. I have a new pc and the old drive is readable in a drive enclosure hooked up to new PC via usb. I have done the typical search for the appdata profile file, but I am not sure what I have here. I have attached a screenshot of the old drive and a global search on "Thunderbird". I am not sure where the profile file is residing. Any advice would be welcome. Thanks.

After having trouble sending email with Thunderbird, I contacted Spectrum, a.k.a. Charter , support. It turns out, Spectrum will no longer connect with Thunderbird:

"Thank you so much for your patience! I was doing some research and Spectrum is not allowing links with thunderbird server as of March 2024. You can use spectrum email on apple mail or outlook going forward but thunderbird email linking has been eliminated."

Thought you would like to know.

By the way, I'm using Linux (KUbuntu 22.04).

Cox dumped all of COX email onto Yahoo. I have used Thunderbird for years but now I cannot set up my Yahoo account in Thunderbird. We were allowed to keep the COX address. Possibly the @cox.net is confusing the software. Are there instructions for doing this? Thanks, Alex stantona@cox.net

I keep getting the message that TB can't connect to my server. I am able to go to my server in a Browser window, I have re-entered the password Multiple Times and it still will not connect. What else can I look at? Tony

I get this full screen message wants to access your google account. This will allow thunderbird to read ... ... by clicking allow ...

I can't see allow and can't change the size of the screen

I have used Thunderbird for Windows for probably 15 years at least. I change my password to my AT&T email address and have not been able to use Thunderbird since (May 2). It ask for password but when I input my new password it cannot connect. I deleted stored passwords and now none of my email accounts work. I have been forced to switch to Outlook, but would like to be about to use Thunderbird. A friend that I help with computer issues had the same problem several months ago. She changed her Roadrunner password and has not been able to get email via Thunderbird since. She only has one email address, also forced to use different email program. Why did it quit working because we changed passwords?

Glen Midkiff grm1943@gmail.com glenmidkiff@att.net

I have been using TB for a long time, currently 115.11.1 (64-bit)

Out of the blue I have started to get on loading up TB: Warning: Potential Security Risk Ahead

Thunderbird detected a potential security threat and did not continue to live.thunderbird.net. If you visit this site, attackers could try to steal information like your passwords, emails, or credit card details.

Can you please advise?

Thanks

Dell Inspiron came with OS on a small C: & data on a massive D:. I assumed the Dell-guided migration took care of moving everything necessary to D: ...NOT!!! When C: filled up with data, I was trying to move Thunderbird TB) data to D: & somehow deleted thunderbird.exe. I realized my error when the systray icons for TB, Firefox, & Microsoft Edge responded "Can't open this item." I then accidentally clicked "Y" to "...Delete this item"? When I went to download a new copy of TB, it presented the new user screen. From previous research, I found my profile file and copied it to both C: & D: with a new name to have extra copies. So I have 3 requests 1) What is the safest method for getting TB back? 2) Once that is done, how do I get thunderbird to maintain everything I need on the D: drive? 3) Firefox now works, but all my bookmarks, extensions, etc. are now gone. If that issue is appropriately part of the solution for the above requests, please help me with that as well. I will appreciate your help! Ken Cawthorne

I'm using thunderbird 115.10.1 on Ubuntu Linux. I've set up a second calendar and associated it with an email account hosted by Polaris Mail. That email address has worked fine within thunderbird for everything else for a long time, but I only recently associated it with a calendar. When I get a meeting invite, for example from a gmail user, and accept that invite, selecting "send a response now", no message ever arrives at the email of the inviter and no email ends up in any of my folders (drafts or sent). It is like nothing happens. The event *is* accepted and added to the calendar, but no respose is created or sent. I have another email account and calendar and meeting acceptances and responses seem to work fine.

I've looked at all the settings I can find and they seem appropriate and analogous to those with the working email/calendar. The correct email address appears in the calendar properties opened by right-clicking on the Calendar and selecting properties.

Any help? Thanks.

The new inbox format is similar to Apple inbox. I used Thunderbird because, in my opinion, the inbox layout was much better than Apple mail inbox which is one of the primary reason I use Thunder bird. Is there a way to go back to the previous inbox version?

Thunderbird. When I move an email it does not go to the new folder, it disappears. Ctrl-Z (in the same session, only) will bring the message back.

This is a serious and fundamental problem for an email reader. And there is no direct channel for getting help with such a fundamental problem.

The messages are not misfiled, they do indeed disappear. Thunderbird 115.11.1 (64-bit) on Windows 11 Pro 10.0.22631. OUTLOOK does not do this with the same mail accounts.