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Moving Thunderbird from an old laptop (W10) to a new laptop (W11). Doing this for a non-computer-literate friend. Old laptop (bought in 2016) is now running W10 but I assume it was originally W7 and upgraded at some point (by me).

I followed Moving Thunderbird data to a new computer which seemed straightforward. However when I copied the Profile across and restarted Thunderbird there was no data to be seen. I tried again just to be sure, including uninstalling and reinstalling Thunderbird. Still no joy. [There are support threads about this but they seem to be archived so I can't update them.]

Onwards and upwards. I tried the "export to zip file" option. This had a mild warning that if the Profile was more than 3GB it might (!) be better to back up instead. [Noting that I had already tried this and failed - see above.]

It produced the ZIP file eventually, at an impressive 15.8GB. I then tried to restore from it, but the Restore option refused to find it, showing a comment that the file must be not larger than 2GB. I refer the reader back to the note on the Export option.

I then noted that you could Import from another Profile. I had one of those saved from my first attempts to copy Profile -> Profile. So I tried this option and it worked.

I think my issue was that the old version of Thunderbird was 32 bit and the new version was 64 bit. In which case the document linked to above could do with an update to warn about moving from 32 bit to 64 bit and include the method that worked. [Subject to more testing by others to confirm the solution works reliably.]

The Export dialogue could also do with a much more specific warning, to align with the Import dialogue.

This is a brief summary of a very long day because shifting 15.8GB of data around between computers and in and out as well is incredibly tedious! :-( Noting that the ZIP file and the Thunderbird directory tree with the Profile in are both the same size.

Occasionally some of my contacts said they were not receiving my emails. Therefore I sent an email to myself and it did not arrive. When I checked my sent box my email was there but the sent address consisted of the first part of my own address, followed by a completely different address, which I traced to a Spanish email provider: @d4.com.mx

It looks like my sent emails are sometimes being re-directed to someone else's address. How can this happen and more important how can it be stopped?

Suddenly, possibly due to an update but unsure (started on 6th November), my emails no longer sent in Thunderbird due to the above message. I am still receiving emails in Thunderbird. I have checked all of this with plusnet and as I can send and receive without problems in webmail, this is being seen as not a plusnet issue. In terms of trying to resolve, I have tried adding my password in to the box, have tried checking all of my smtp settings against those advised to no avail. Has something changed... There seems to be many similar threads but not sure if mine is the same so creating a new thread.

When an email is sent nothing else responds you have to wait a while, if you click anywhere it says "not responding" when you wait about 30 seconds ish it works ok,

I've been having this problem for probably about a year now. I have 9 accounts (5 Pop3 and 4 IMAP), and the passwords are stored by Thunderbird. I click the send/recieve button and everything downloads...until it doesn't. I go the settings/ saved passwords and what was a long list is very short...it has the MS oauth stuff for outlook.com emails and nothing else.

Over time I've found a relatively easy workaround. if I click the offline button in the lower corner, eventually it will prompt me for all the missing passwords and I'll be ok. But I have to exit and re-enter Thunderbird for that to work. If I do it in the instance after a download failure...it just hangs.

I use Firefox, and I noticed it happened one time after a Firefox update and I thought that might be an issue, but that didn't happen on the next update. There is nothing overt or obvious with my computer that would explain it...no dropped connections or errors...

I will note that I generally keep the computer and Thunderbird updated...but not necessarily immediately after the latest update is released. Thunderbird is at 128.4.2esr now. Windows 11, 1 yr old computer.

I do he the Thunderbird data on a NAS accessed over a LAN. I've been doing that for a long time with no issues.

No other changes on my end see to be the issue. Any ideas?

Thanks for any advice.

For the last three days I've been unable to receive or send emails from Thunderbird. The following messages are being generated:

1.Sending of the message failed. The message could not be sent because the connection to Outgoing server (SMTP) timed out. Try again.

2. Sending of the message failed. The message could not be sent because connecting to Outgoing server (SMTP) smtp.telstra.com failed. The server may be unavailable or is refusing SMTP connections. Please verify that your Outgoing server (SMTP) settings are correct and try again.

I've confirmed the settings with the ISP (Telstra) and the Telstra webmail works so they say everything is OK at their end.

I've turned off Malwarebytes, AVG, and PrivateVPN and closed and restarted Thunderbird and still no success. I've read multitudes of info on the internet and tried all sorts of different things to no avail. The only success I've had is to connect the laptop to my phone and use the phones data through the wifi phone network. Thunderbird then receives and sends emails. However this is not a sustainable solution.

Any assistance would be appreciated.

NDLJ

Bonjour J'avais créé une adresse mail en "mailfence". Je l'ai supprimée, elle n'apparaît plus dans "mes comptes" mais, depuis, j'ai un message tout le temps:

"Authentification requise- Mozilla Thunderbird HTTPS://mailfence.com demande un nomd'utilisateur et un mot de passe. Nom d'utilisateur.............. Mot de passe..................."

Où se cache cette adresse supprimée que je ne retrouve pas?

Merci

I am using Thunderbird 128.4.2esr (64-bit) with IMAP where all mails are moved to a folder structure in the local folder.

Since the latest updates of TB, I see that some of my folders under "local folder" suddenly become doubled like

Inbox/FolderA Inbox/FolderA-1

The original FolderA contains sub-folders and even sub-sub-folders. The newly generated FolderA-1 seems to contain all messages from the original folder, but just plain without the sub-folder structure.

It seems that the new FolderA-1 was generated as a kind of backup. It is hard to decide if this new folder can be deleted. The AddOn "Remove Duplicate Messages" does not work here, since it only works on a single folder. Moving all messages from the new folder into the original one does not help either, since the AddOn does not compare messages between folders and their sub-folders.

How can these problems be handled?

Seeking knowledge if possible, on how to import email sub-folder contents from another email provider (in this case, 'The Messaging Company') into Thunderbird. The "Import Tool" in Thunderbird appears limited to only a few sources that it can import from, however I'm unsure if there is another way. Any help would be greatly appreciated. Thank you in advance.

When I move an E-Mail from the in folder to a storage folder it is lost. Undo will not bring it back. It is just gone. This has been happening since the new release. I had no problem with moving item to folders with the prior release.

Thanks for your help.

John

For years I used Thunderbird to process my Earthlink emails. Thunderbird suddenly stopped accepting my Earthlink password, which I repeatedly tried and reset. Is something wrong with my Thunderbird settings? Mac IOS 13.7.1

Bonjour, mon problème est que depuis un certain temps,je ne peux plus insérer de nouvelles adresses de courriels sur Thunderbird. Mention (écrit en jaune)impossible de se connecter au serveur.Merci de me répondre. Gérard Voici l`adresse courriel ou vous pourrez me rejoindre :Gerard3830@gmail.com.

I followed Mozilla's official instructions for transferring and Thunderbird profile to a new device (running Fedora 40 and Thunderbird version 115). Thunderbird seemed to read my profiles folder correctly, as all my accounts and RSS feeds were present after I copied the old profile to folder to my new .thunderbird directory. However, after downloading the header files for the emails I have received since switching computers, it then tries to download all 60,000 emails or so on my gmail account even though most of these emails should be included in the profile folder already - it looks like have 6 GB INBOX file within this profile.

Is there a way to get thunderbird to read the profile without redownloading all the messages from my accounts? I unfortunately no longer have access to my old windows machine that this profile is from, just the profile folder itself. Let me know if there is anything I can do!

I am unable to send emails from my Optusnet email account through Thunderbird. This also happened a couple of weeks ago, and was resolved with Optus Tech support by updating the SMTP settings, but they don't seem to be able to help this time. What settings do you recommend? Or other solution?

In late September, IONOS canceled me--they blamed their new algorithm. They also deleted or uninstalled my Thunderbird at the same time--they deny doing it. I reinstalled T-bird and downloaded my current inbox from webmail, but 25+ years of work and personal email files saved in Local Folders were missing, along with my address book. Carbonite recovered >130GB of T-bird files that I think and hope are my saved files and put them in one big folder on my desk top--hours later, Hurricane Helene hit. I have my replacement computer now and a recovery drive from Carbonite with>450G of my data on it, including my earlier recovered Thunderbird files.

Question: how do I get those files and address book back into my Thunderbird? This is critical for me. I'm a writer, and all my professional communications are in them, along with all my volunteer work and personal messages--more than 25 years' worth! Between the hurricane and this, I've lost more than a month of work already as well as contacts, medical records, etc..

I pressed download but I don't know what to do next. I signed up for the newsletter and gave a donation. I don't know where to find the app or how to complete the installation. Thank you.

This is same server and settings that work on other apps. I noted that Antivirus software can be the cause, but I stopped Norton and only using Defender and still have the problem.

Thunderbird

Jeg har problemer med at sende mails til min penneveninde i Sydtyskland. Det viser sig desværre, at hun ikke har haft et virusprogram. Når hun sender fotos, lægger disse fotos sig ind i stedet for de fotos, som kommer fra både private og offentlige mails. Det er sket et par gange. Nu er der også sket det, at et opslag fra en afsender – bliver vist som et kommenteret opslag på Facebook.

Jeg har kontaktet mit virusprogram som siger jeg ikke har virus og at jeg skal kontakte jer for at finde en løsning.

Når jeg vil sende noget til min penneven bliver mailen stoppet af Thunderbird med to advarsler, som jeg vedhæfter. Desværre ved jeg ikke hvad advarslerne betyder og ved ikke hvad jeg skal gøre. Derfor beder jeg jer om hjælp fordi der måske er idenditetstyveri indblandet? Venlig hilsen Bente Nybjørn

Bonjour, Je ne parviens pas à répondre et à transférer un mail reçu. Je reçois un message de rejet systématique (anti-spam) pour 2 envois en retour d'un message reçu !?. Merci de bien vouloir m'aider. Cordialement A. OLLIER