Thunderbird Community Forum

How can I change the subject prefix (Re:, Fwd:, etc.) ? I would prefer "RE:" to "Re:" for my outgoing mails. "mailnews.localizedRe" handles recognition of incoming subject prefixes, but I found no pref for my outgoing mails. Thank you!

Windows 11 root drive failed. With new drive and fresh install I reloaded my email from back-up and all went well!

Of course I lost email between last back-up and drive failure (as expected). I have subsequently been able to recover data from the failed drive and I can see the data from the time between back-up and drive failure.

Is there any mechanism to merge those message back into my active mail storage?

Thunderbird version 115.12.2 (64 bit).

I downloaded Thunderbird 120 and installed. All I get is error message saying windows is searching for thunderbird.exe and nothing else. Old version has disappeared and I can not uninstall - get same searching for uninstall.exe. I have tried re-downloading it and re-installing it 4 or 5 times, still nothing. help please.

I got a new computer (still a Mac like my old one) but evertime I try to import any OpenPGP keys, I just get an error that says “Error! Failed to import key.” and nothing else. I’ve directly exported my onw personla key from my thunderbird on my old laptop, put it on a thumb drive, tranfered it over to this one, and still I can’t open it.

Hi! Our email server recently migrated from Media Temple to Microsoft and, like many people, we are able to receive messages but not send them. I have gone through the process and updated both the SMTP and IMAP settings to no avail.

One support article says, "Per Microsoft documentation, administrators should visit https://login.microsoftonline.com/{tenant-id}/adminconsent?client_id=9e5f94bc-e8a4-4e73-b8be-63364c29d753 and grant the following permissions in order to authorize Mozilla Thunderbird: IMAP.AccessAsUser.All, POP.AccessAsUser.Al, SMTP.Send and offline_access."

I have followed those instructions and am still unable to send emails from our accounts. The only account able to both send and receive is our admin account. Does anyone know if there are additional settings that we need to configure in Thunderbird or does this need to be done in Microsoft Entra admin center?

Hi, I am running TB 115.12.1 without any extensions. I have configured caldav accounts, on Forwardemail servers, on TB as well as on Android with DAV5x. Everything syncs without errors and most calendar entries are visible on TB, but not all!!! I have installed OneCalendar app along side TB and OneCalendar shows all calendar entries (as far as I can tell)!

Has anyone experienced similar issues? Any ideas how I can procede would be v welcome. What are the known issues with calendars on TB115.12.1?

Thx everyone.

Cheers, Adrian

My laptop using Windows7, the processor died. The hard drive is ok. I am now using Windows10 in a newer laptop. I don't know how to access all the data from the other. I don't think I did a back up. I've got both personal & business. Is there a way to retrieve my old Thunderbird info? [And just so you know, I learned my lesson about not backing up.] And thank you for any help!

Currently using Windows 10, 22H2, Thunderbird 115.12.2. This PC has been working fine since it was built approximately January of this year, 2024. I have not installed any new software or made any major changes for several months. I'm using Bitdefender Total Security. Recently I started noticing this issue with Thunderbird (I've been using as long as it's been out.)

When composing a message, I now see on a regular basis at the lower left of the message window "Assembling message......." or "Assembling message......... Done". Thunderbird does not crash. If I continue to compose and send, the message always sends. So I'm not having the error some others have had in the past. But it does look like the message I'm typing may be having issues being put into the Drafts folder while it's being composed. That seems to be the only operation happening when the message appears.

I have seen this past week the messages sending and being placed into the Sent folder but there have been at least two messages identical to the ones sent that are still in Drafts and are not deleted after being sent. So whatever is going on seems to be a bug with the saving of the draft and then cleaning out Drafts after the message is sent. Note these are text only messages and I did not change any settings in Thunderbird after updating last week.

While Bitdefender updates on a regular basis and Thunderbird notifies me of updates when they are available (same with Firefox), those are the only items being updated so it seems something is going on. I am going to assume this is an issue with Thunderbird for the time being since nothing else has changed. I've gone through tips noted for those having errors sending messages when they get the Assembling message notification but I don't get any errors. Just a weirdness with the Drafts folder.

In the interest of safety, I don't want to turn off AV to test anything. I've also compacted folders to no avail. Seems that notification keeps coming back.

Any additional help would be appreciated.

About 3 weeks ago, I stopped getting email from ATT in Thunderbird. I am able to go online to the ATT mail and see my email, so it is something with Thunderbird. I've looked online for other suggestions and have tried several. Between everything, I've really messed things up and not sure where to start now. Last thing I tried was to delete the certificate and now I can't seem to add a certificate. Not sure if I'm suppose to create a new one or if there is one on my computer.

This morning I found some steps on how to create one. It had me go to the End-to-End Encryption to generate a new one. I didn't see that option, so I created a new OpenPGP key (not sure why I thought that would help).

Maybe the best thing is to try and reinstall Thunderbird.

I'm open to any suggestions.

Thank you.

"Octopus Energy Limited is a company registered in England and Wales. Registered number: 09263424. Registered office: UK House, 5th floor, 164-182 Oxford Street, London, W1D 1NN"

The screenshot showing the symbols is in the attached image. Is there a conflict between my settings and theirs?

Can not set up Gmail account in Thunderbird. Would like to sent email using the gmail account with Thunderbird. Always get error as listed below ....

Error message: Google 400. That's an error The server cannot process the request because it is malformed,

Is there a way to alter/customize the order of my email account folders? Eg, can I rearrange the order of folders named Trash, Inbox, Sent, Temp, Notes, Outbox and many others I created? TIA

Trying to install Thunderbird on a new laptop but getting "unable to log in at server. Probably wrong configuration, username, or password." I don't know what the right configuration should be, but the username and pw are correct.

If anyone can help me with this, I'd appreciate it:

Any anyone ever had Thunderbird Email Filter REALLY work? I never have.

- Some emails do get sent to my Junk Folder (where I have it assigned to go to). - Some emails are noted as Junk, but not filtered to the Junk Folder (please see Image). - Some emails are still coming thru as normal emails, with no notification.

I've added an Image of how I set the Email Filter for every SPAM email.

Thank you in advance.