Thunderbird Community Forum

Unable to authenticate to Outgoing server (SMTP) . Please check the password and verify the 'Authentication method' in 'Account Settings | Outgoing server (SMTP)'.

As I store all my contacts in a CarDav sync I have no need for a "Personal Address Book". It might even be a problem because accidentily stored addresses there are not synced. The "Delete" on the context menu is grey and cannot be selected. How do I permantely remove "Personal Address Book" from the list of contacts?

Sent and received. Please notice the asterisks. Where do they come from? John

Message Sent: Fantasia I and II Georg Phillip Telemann 1681-1767 Kleine Passacaglia Michael Kuntz 1915-1992 Fair Phyllis I saw

Message Recieved:

*Fantasia I & II* Georg Philipp Telemann (1681–1767)
         Telemann’s Fantasias capture the brilliance and balance of the
         Baroque era—each movement a miniature world of counterpoint,
         grace, and invention.
*Kleine Passacaglia *Michael Kuntz (1915–1992)
          A modern take on a timeless form, Kuntz’s piece builds lyric beauty
          over a gently repeating bass figure. (See insert for more)
*Fair Phyllis I Saw* John Farmer (1570–1601)

certificate for imap <edited>@peternedsmith.co.uk is not valid, someone could be trying to impersonate the server and you should not continue, on clicking the more info, on the panel that comes up, if I click on get certificate, the selections below get greyed out and nothing happens, I have viewed the certificate, and it appears to be from the US, I have taken a screenshot of the top part of it, which is below. Regards Peter Smith

My thanks again to sfhowes, Rick and others for assisting me to get back my ability to once again send e-mails from Thunderbird. Now for the next step.

Just days ago, I migrated my years of Thunderbird e-mails on a POP protocol to IMAP. Before doing so and before also uninstalling my old Thunderbird because of e-mail sending problems and then reinstalling a new version, I saved a profile. Now with the most current version of Thunderbird, I lost (i)a decades worth of saved inbox e-mails (but for the last 2 years), (ii)I lost all of my sent e-mails but a few odd ones, (iii)I lost my archived e-mails in Local Folders and (iv) I lost all of my contacts and saved group e-mail address lists.

My profile is saved on an external hard drive. Obviously the new installed version of Thunderbird must have somehow found the last 2 years of my inbox e-mails but nothing beyond that as mentioned above. Can you share please a recommended procedure where I can better import what I assume I saved correct on the profile I saved twice (I saved a master folder named Profile and separately saved 4 folders - 2 folders ending in default and 2 ending in default-release. Thank you.

Good day,

I am a TB user (for work) and i love it, the main reason being the fact that it's simple, compared to MS Outlook, for example. Easy to use, intuitive for new users, and so on. So congrats to everyone for keeping it simple! :)

Now, an issue i've come across recently. More and more people send documents as .jpeg, pictures taken by smartphones. And, as everyone knows, the recent models have increased the MB of each camera. And most people sadly keep the max resolution, best quality, like you'd use when going on a holiday. But you don't need this when you take a picture of an invoice or a gas receipt. This results in very large attachments, esp. when you add several pics to an email.

The current limit seems to be 25MB (i got this from Google, didn't see any mention of a limit in TB help?!). So my question is simple: can I, a user, increase this limit somehow? Or is it a dev related setting? If users can, please guide me through some options/menus because i haven't found any. I use the latest version, 140.8.0esr. A realistic limit, imho, would be 100MB/email.

Also, kindly please keep feedback on topic, I am not interested in sharing, or sending in any other ways, like wetransfer, google drive, one drive, etc.

Thank you!

Believe my T-bird account has somehow been corrupted. Takes forever to load on PC and always puts new emails in Trash folder. Often does not accept correct password. If I save / backup PROFILE, uninstall T-Bird and delete any Thunderbird folders on PC, if I restore per backup, will I be restoring the corrupted app. Don't want to loose email addresses, thousands of emails and email folder structure. Will a restore work? Thank you. Greg D

PS Version of T-Bird on laptop still puts all new email in Trash, but loads much more quickly, etc.

Is there a way to create a Thunderbird account even though your system is not able to log into my iCloud.com email account using my credentials?

lorsque j'envoie un mail par mon compte aol, celui ci figure aussi sur les messages envoyés gmail. Je souhaite qu'ils ne paraissent que sur la messagerie d'envoi d origine comment y remédier ?

Good morning

Since this morning (05/03/2026) Thunderbird freezes within a minute or two of opening the program.

Everything in the program freezes up. I cannot even close it.

I am running Version 140.8.0esr on a Windows 10 PC.

Initially I was getting a pop up warning message that ask me to confirm if I wanted to send an email with attachments of over 20 MB. There were 3 or 4 such messages. I had not tried to send such emails.

I checked the Outbox in Local folders for old messages, but it was empty. I also checked the Unsent messages files in Local Folders in the Profile folder. I deleted the Unsent Messages.msf file to no effect. I renamed and replaced the Unsent messages file. Also no change.

I checked for crash logs but there are none.

I have run out of ideas as to what to try next. Does anyone have any advice?

Hello, i have installed latest TB an try to use it on one PC - This PC is part of company network, users login to windows by domain controller login. there is also a exchange server in the same network. i have created a running and working thunderbird-exchange connection for 2 different users but with the third user its noch working anymore. is there a limit to user accounts on one PC or? Thank you all kind regards andi

I am using the latest version of Thunderbird 148.0 on a MacBook Air with latest OS Tahoe 26.3.

Yesterday I was unable to receive messages via Thunderbird app but could log in to my provider and view the messages on webmail. Checked my account configuration and changed the port to 110 which seemed to fix the problem.

However, this morning I again cannot receive emails but I can send them. When I click on Get Messages, the bottom pane which normally shows the app contacting the server and downloading messages instead only shows the blue 'thinking' line (sorry, don't know what proper terminology for this is) for a few seconds then stops.

When I go to Server settings for incoming and check connection to server it is fine.

Any ideas why this is happening?

There is a way to add a folder to a Thunderbird account that combines other folders. The one I want to create would be "Inbox and Sent emails combined". I did it in the past, but I can't remember how to do it anymore. Can someone help with this? I am running Thunderbird 140.8.0esr (64-bit) on Linux Mint.

I cant receive emails only send them. I receive an error message when starting Thunderbird "the current operation on inbox <my email address> did not succeed"

Sometimes Thunderbird asks for a donation. But in order to donate I need the indication of a SEPA account. Other options are too cumbersome for me. Because this topic is not listed in the topic list, I have selected "Accounts".