Thunderbird Support Forum

Our small business has a handful of Zoho email addresses that we use via Thunderbird on MacOS computers in our office. The computer I am using only has some of the email addresses listed in Thunderbird, and I am trying to add the rest.

Once all requested data is entered in the "Set Up Your Existing Mail Address" screen, we receive the error message: "Unable to log in at server. Probably wrong configuration, user name, or password." All of the data is correct, and I have tried this process different weeks to see if the issue will clear on its own, but no. I've attached a screenshot of the error message.

I have tried this with several pre-existing email addresses and it's giving me the same message, although it did allow me to add one address recently. That newly added, previously existing address is now somewhat accessible via Thunderbird, but every time we open Thunderbird it says "Login to server imap.zoho.com with username shipping@jadeandpearl.com failed." I can access the inbox and other folders of this account in the Thunderbird desktop app, but it is not currently showing new email.

Thunderbird version: 115.12.1 (64bit) MacOS: Sonoma 14.5

I back up my TB profile every few months. I just went thru the Cox-Yahoo email conversion and I am getting emails. When I did my back up, I noticed in the properties it had one more folder and the files went from 1311 to 2585 files. Is something wrong? Do I need to compare and research what is causing this or just move on!

Hello! We are a real dues-paying member, having made a number of donations over the years. We have been having trouble with emails received from Microsoft-based systems, with the HTML formatting of messages getting lost and the attachment of a winmail.dat file, which we can't open. We tried to use your Lookout add-on, but with all of the permissions that must be given in order to use that add-on, it will not pass our IT security folks. Is there any chance you will be able to improve Thunderbird to read those messages without having to use the add-on? We really hate Microsoft, and would prefer to stay on your team, but we will not be able to unless a solution can be found.

Thanks! Mark

Despite literally hours of frustrating -- now infuriating -- effort, my inbox won't show "from," which was removed by the most recent update. Is this problem fixable? If so, how? (If not, I'm damn well going to dump Thunderbird.)

In the past, I could click on an email address and drag it into a new subfolder I'd made (let's say for emails to a group about baking). Easy as pie!

Sorry for the bad pun.

Now, when I try to click and drag, it will NOT go into that subfolder. I looked in Help and there were answers about csv files, about a horizontal or vertical view, etc. None of that made sense to me.

So I'm wondering if it's still somehow an easy thing to do, to duplicate someone's email in one or more other folders. It seems like it should be! Thanks, Su

At our clinic when we cannot answer client calls it goes to voicemail. The voicemail the should be sent to our email and transcribed, however it hasn’t been. It leaves us with the only option to play voicemails aloud while clients are going in and out of the lobby, which we find unprofessional. Please help us fix this!

I just noticed (after 7 yrs) I have Thunderbird(beta) 32 bit on my laptop windows 10 (64 bit machine) and Thunderbird 64 bit on my desk top Windows 10 (64 bit machine). How do I get the 64 bit Thunderbird on the laptop without loosing all my settings to login to my 4 email accounts?

In my inbox I see a couple of emails that (once opened, or even seeing preview) are not associated correctly to the original email sent or received. It's quite odd as it happened only a couple of times, but even after updating, rebooting and moving these messages, they are still showing the wrong addressee and content.

In the attached screenshot you can see the example. Looking forward to receiving your help. Best regards, Nuno

Greetings, recently our pc was attacked ,malware. A new windows program was installed. This resulted in some apps being deleted. One of which was the Firefox email. Inspite of many attempts to reinstate it I have had no success. There is great difficulty in finding what to do to reinstall. There are assumptions that I have particular information. Other than our 3 email addresses we do have any code numbers or passwords, as these to were also lost. As it has been several days since the "repair" the inability to access Firefox with historic emails is now creating a number of serious issues. I need urgent help in reinstalling our Firefox email. My inability to find that one person who I know can help is out there. The FAQ were of no help. The request how to reinstall Firefox does not appear to be a FAQ. Ross.

After some intermittent problems, hopefully solved, I am now left with one main problem. When I send an email to agmail eddress it fails, saying something about SPF having a hard fail and no DDKM, whatever that means. If I send emails from webmail ro my iPad they get through. Can this be solved, please?

I've been trying to get Thunderbird (102.6.0) to filter messages based on message body contents that contain specific URLs (such as "https://docsend.com"), but it's not working. I even tried setting emails to be viewed in plain text (as opposed to HTML), but that also didn't work.

How can I achieve this?

Hi, I love this email app. but now I starting to get this msg. What I need to do NOT to have this msg every time that I open the app. = Dear users, ThunderHTMLedit will no longer be hosted at addons.thunderbird.net. Please head to www.betterbird.eu/addons/ to install the new version. The extension “ThunderHTMLedit” is requesting to be uninstalled. What would you like to do? Thank you very much Pini

Hi, my Thunderbird has brought down 279 emails from Gmail. I opened Gmail and found the emails properly in the Trash folder. So it appears that Thunderbird is bringing down all folders??? I've been a user for years and never notice downloads from spam or trash before. New change to Tbird? Is there some way to exclude spam and trash folders from download? My version is 115.11.1 (64-bit) TYIA Richard

I'm trying to change my signature on an account I've had for sometime. It lets me make the changes I want and when I try sending a message it works fine. However when I close Thunderbird down and re open it, the signature has reverted to the previous version. I can't see any option to save the changes to the account settings so they'll still be there next time.

I've tried it 2 ways - firstly editing the HTML signature text, and secondly attaching instead a signature file. In both cases it works fine until I close and re-open.

Hi,

I have six IMAP email accounts that will cease to exist in a few weeks when I don't renew the domain/hosting where they reside.

Most of these accounts include invoices for purchases, and serial numbers etc that I need to have access to after the accounts will die, so just being able to read them offline. Even down the track when I inevitably build a new PC, I'll still want to have access to theses messages offline.

What is best practice for archiving or backing up these so I can still read them in future? Is there a way to archive so that I can read them in other clients in future? or I can only archive in a way that will be Thunderbird only?

Also... how do I get Thunderbird to allow me to read the messages from these accounts, without checking for new messages on these accounts, which would give error popups every time?

I've never had to do this before, and when I've searched around the results seem super confusing.

Any help would be greatly appreciated.

In case its relevant, my current Thunderbird version is 115.12.1 and running latest update of Win 10.

We don't know our password. We are not receiving emails. We have searched our password and it has confirmed it as the same we have written down. However, this does not work. Where do we go from here?

why is there no back button on thunderbird? I clicked on a message (have to click twice on it now in the lousy upgrade I was forced to use), and now I can't go back to the inbox. What's up????

Thunderbird is blocking some outgoing mail. If I start with a file, right click, send to mail recipient; the message is blocked as spam with this diagnostic: Sending of the message failed. An error occurred while sending mail. The mail server responded: Spam detected by content scanner. Message rejected (ID 6661B68A00783926). Please check the message and try again.

But, if I start with Thunderbird Write and attach the same file, there are no problems and the message is sent.

To the Mozilla Community:

I have a Posteo account and set it up successfully in Thunderbird. Emails and Calendar are both working without any issues.

However, Posteo contacts are not syncing. I used the TbSync / Provider for CalDAV and CardDAV without success. And using the Add CardDAV Address Book in Thunderbird is not working either.

Posteo Support confirmed my settings are correct. (Enter https://posteo.de:8843/addressbooks/johnexample/default in the URL field and replace johnexample with the local part of your email address. )

Any assistance that can be provided to troubleshoot and resolve this issue is appreciated.

Thank you.

--Shaun