Thunderbird Community Forum

I use both Gmail and Thunderbird. I can see both in Thunderbird on my PC. I would like to sync my TB address book with Google contacts. I searched a good while on-line and find information about adding a CardDAV Address book. However the instructions mention steps that simply are not available on Thunderbird on my PC. I have the latest version of TB (140.7.1esr (64-bit)). The first step says to "open the Address book, select File>New> CardDAV address book". That is not a choice. Anything in Mozilla support is several years old.

So is this possible or not?

Hello all:

Transferring Thunderbird from the system above to the system noted above. Follow the instructions from here on the Mozilla Support page (copied both "Thunderbird" directories into the Roaming and Local destination directories. When the destination machine installation opens, it is functional (i.e. it picks up all the existing e-mail accounts, downloads new mail, etc...). The problem starts when we get to the local folders.

All of these have a date and time appended to them in the destination installation. For example, if the original folder is "Prosperity Bank" the destination folder is labeled "Prosperity Bank (2025_09_21 23_06_33 UTC)" and will not let not populate (shows no messages inside).

As I am typing this, it seems I may have identified the problem (or at least part of it). It seems the destination system install is slowly working its way through the local folders randomly (not in alphabetically order), as it seems to be slowly populating them with the old mail stored therein on the original system. It is going very slowly. Very slowly.

Has anyone else experienced this? Is it normal? Is there any way to quickly eliminate the dates now appended to the local file names? (Visually this is very annoying and I do not want to try modifying the individual folder names yet until I'm sure its populated as much as it will populate.)

Thank you for any assistance.

Larry Reese

I inadvertently deleted a mail sub folder named Shopping Oder Confirmations I found the folder in my acronis backup and copied it to my desktop I then pasted it in to the profile window of thunderbird in hopes that when i restarted it would show up in my mail folders which it did not I can send you screen shots of the different windows where I dropped the folder Can you help please?! There is tons of information in these folders I reference often. Thank you! BTW I did just make a donation :)

In the past week emails from one of my friends started going into junk mail. The person in in my contacts. I selected 'enable adaptive emailjunk mail..." and selected the correct address book. The mail still went to the junk folder. I changed the 'move new junk mail to: my inbox, still went into the junk folder. I had him send me 10 emails that I marked as 'not junk' still no success. My emails come from yahoo.com - went there and there was nothing in the spam or junk folder in my yahoo email account. This is happening to only one email address. There's nothing strange in the title of the email or the content. I've run out of ideas.

I downloaded Thunderbird and added my email account. The email account I configured in Thunderbird is set to be permanently deleted. All information in the email account will be deleted. My question is whether I can use Thunderbird as an email archive? I think I copied all of the emails in the account into Thunderbird. When my email account is deleted will the copied emails in Thunderbird still be there or will they disappear as well?

Sorry but I find carrier pigeons easier than computers and no I don't have any. I am trying to get a second email account sorted as the first one has been disconnected (old supplier) even though new emails sent to the old address show up on thunderbird. Online advice on how to do this does not work, as the information that should be on screen is not there. Oddly enough the new email address has allowed me here, does this mean that the new email address is now working? Many thanks

In initial set up of Thunderbird laptop: on the last screen of set up, after entering username and password, Thunderbird set up posts a green background notice: " [checkmark] Configuration found in Mozilla ISP database." When "Done" is selected, a the following yellow background notice is posted: "Unable to log in at server. Probably wrong configuration, username or password." I know username and password are correct; they allow access to email via Spectrum webmail. I am confident configuration is correct [IMAP] \,because that is the configuration I have always used with my Thunderbird account on other computers. Suggestions?

I have been using Thunderbird for many years. I just got a new computer and installed Thunderbird onto it. I have several email accounts for personal, business and clubs so this makes it easy to keep track of. I have some gmail accounts and 3 different yahoo accounts. Now when I get an email to one yahoo account it prorogates to the other two. This never happened on the old computer do you have any idea how this happened, and more importantly, how do I stop it?

Guten Tag, ich instaliere schon auf 2 PC mit Wondows 11 Ihre Email Programme Thunderbird und ich habe an statt ein Papierkorb eine Mape Zeichen. wenn ich lösche Email, dann die verschwieden und die kann mann nicht wieder finden. Es wir bei Instalation automatisch Einstellungen von Programm ubergenommen. Ich bitte um Ihre Hilfe, was mache ich falsch. Vielen Dank im vorraus. Michael

I used Thunderbird for many years, but starting in August 2025 it stopped working. It was getting an error in the smtp server, and I was unable to resolve that issue. When I try to login to Thunderbird now, it tries to send a message to pwrichcreek@twc.com, but that no longer exists. Thanks for your help.

When a message is removed from a folder via that folders' Retention Policy, I assume the message is permanently deleted. Is it possible for that message instead to go to Trash? Thank you.

Google calendar invite created in Thunderbird lacks Google Meet link and sender acceptance is off by default .

Given:

• A user with a personal Google account; and
• User has enabled Google Calendar setting Automatically add Google Meet video conferences to events I create; and
• The user’s Google calendar is added to Thunderbird using instructions in https://support.mozilla.org/en-US/kb/using-lightning-google-calendar; and
• The user creates an event with at least one guest in Thunderbird;
• The user has 30 min default notifications in TB enabled.

When:

• User creates a meeting invite with at least one guest and Thunderbird saves/sends the event to Google Calendar via its current integration

Then:

• No Google Meet link is attached to the event in Google Calendar; and
• Google Calendar does not record the event creator as an accepted attendee; and
• As a result the event creator does not receive reminders unless they manually accept the invitation by logging into Google account online.

Expected behavior:

• Google Meet link is automatically included in Events with at least one guest;
• The event shows in TB as accepted by the sender by default;
• The sender is reminded in TB before the meeting as per default reminder settings;

Note: As it stands, I cannot use TB for creating online meeting with guests, as it includes no links for meetings, and no reminders. It is only useful for reading google calendar but not for creating or updating meeting events.

Hello, I have two microsoft email addresses linked to Thunderbird, one @hotmail.com and one @outlook.com. I have been using Thunderbird with them both fine for some time. Recently, the outlook.com account has stopped sending emails via Thunderbird. As far as I can tell, this was out of nowhere, and I hadn't changed any settings. It still receives emails.

Both accounts use the same SMTP information, and the hotmail.com continues to work with those details.

I have tried changing the settings and even deleting and readding the account but it hasn't fixed it. I have also checked the outlook account is still IMAP and POP enabled and it is.

When I do try and send an email, I am told: "Login to server smtp.office365.com with username [edited]@outlook.com failed. with options to Retry, Enter New Password (which loads a new window briefly but then disappears) and Cancel."

When I cancel, I get this message: "Sending of the message failed. The message could not be sent because the connection to Outgoing server (SMTP) smtp.office365.com timed out. Try again."

My server settings, on both accounts, are: smtp.office365.com Port 587 STARTTLS OAuth2 And the user name matches the email.

Does anyone know what I might be doing wrong, and how I could fix it? Thank you!