Thunderbird Community Forum

When I have Thunderbird desktop running but I am focused in another application, I receive a popup notification when a new email is received. In the popup, there is an X to make the notification disappear, but it would be very handy if there was also a trash can icon where, if you clicked on it, the message would be deleted from your inbox without having to go back to the TB app. I didn't see any such options in TB settings, and I have searched the forum to no avail. Is this possible? Thank you.

I have created several address books in Thunderbird for my contacts. How can I add all the names in a particular address book to one of the fields such as Bcc without having to add them individually?

Thanks.

I am using version 147.0 (64-bit).

The New Line (Enter) key always double spaces, which is intended for paragraph text. But for tabular text, this makes unnecessary white space. What key combination generates only a SINGLE new line character rather than TWO of them?

Example: Donor: xxxxx Email: xxxxx Phone: xxxxx Billing Address: xxxxx Bank: xxxxx; Account ending in xxxx

This screen defaults to single spacing; why doesn't Thunderbird allow it?

I used to be able to send an email or forward an email by clicking on "forward" and my address book would show up at the left side of the screen and I could click on the names I wanted to send or forward the note and it would add them to the "send to" of my email so I could send it to multiple people. For some reason that has now stopped and I can only send to one person at a time which is very cumbersome and time consuming. Does anyone know how to solve this problem? I hope I'm describing it right.

I am using a E-mail server that uses LetsEncrypt certificates. I was using Thunderbird 128 ESR without problems. When the certificate was updated, I was requested to confirm - then sending E-mails was possible. Now I have updated to Thunderbird 140 ESR. The E-Mail servers LetsEncrypt certificate was now updated but in Thunderbird I do not get any information about this, nor get I requested to check the new certificate. The SMTP connection just fails. The IMAP access to the E-mail server works fine. (IMAP and SMTP work both fine with K9-Mail on my mobile device)

How can I get Thunderbird to ask me again to check the updated certificate?

html used to be easily accessed on the page of the individual emails. (see screenshot of it missing)

i have a need for it on an ongoing basis.

Can I make its accessibility just as simple/easy, without going to back to another release?

Linux Mint Cinnamon 22.3.

Thunderbird 140.7.0esr (64-bit)

Brian

How do I restore selected emails or folders from a backup made with Export? I only want to bring in 30 or so (which were accidentally deleted). I'm using a Windows 11 PC.

I'm nervous about reloading the backup because it was some time ago (and I *really* don't want it to download new emails).

Have been trying to set up some pop3 yahoo mail accounts on a new computer. I have used automatic configuration. I have used manual configuration using the data from my old computer. I have checked the configuration settings on both Yahoo and Thunderbird sites. In all instances Thunderbird verifies the account is valid, but the next window asks for my yahoo username and password. I cannot get passed this stage. I have tried entering my yahoo password and I have also tried the app generated password from Yahoo, all I get is a Yahoo "something went wrong" message. Interestingly I did manage to get one of the accounts to work yesterday, but I must have tried no end of different permutations and I have no idea which one eventually worked.

Today is 01.16.2026 Hi Volunteers, thank you for the service you are providing Thunderbird users.

I didn't see a topic called Security, so I chose Settings.

For Thunderbird version 146, what specific version of LDAP is being used?

Regarding which LDAP version is the most up to date, I found this: https://pkg.go.dev/github.com/go-ldap/ldap/v3@v3.4.12

My concern is about LDAP's security. I believe it is reasonable to think that the latest available version of LDAP would have the latest and most up to date security patches applied.

I would like to feel secure knowing I have the protection of the newest version of LDAP which affords the best security protection available for Thunderbird laptop version 146.

However I have been unsuccessful in determining if Thunderbird 146 is using this LDAP latest version. Could you help me learn if Thunderbird 146 is utilizing the latest version of LDAP that is available? Thanks in advance.

Yes I know I am a bit verbose.

Not sure which "topic" best describes my question, so . . . .

OS: Windows 11 Thunderbird 140.1.0esr

I have been using T-bird for several years, and have made to changes to configuration in recent memory. Beginning today, when I try to send an email through my Comcast account, it fails with the following message:

“An error occurred while sending mail: Outgoing server (SMTP) error. The server responded: resomta-h2p-555031.sys.comcast.net resomta-h2p-555031.sys.comcast.net EXMTP server not available.”

The outgoing SMTP server is configured as follows: Outgoing server: smtp.comcast.net Port: 465 Security: SSL/TLS

For comparison, sending email from my Android phone, using the Gmail client with the same server specs, also fails, thought it gives no information.

For more comparison, I configured Outlook to test with it, and it was able to send successfully. I noticed in setting it up that it used the same server name, but with port 587. Armed with that information, I changed the port setting in T-bird to 587. With that change, the send still failed but with a different error:

Sending of the message failed. The message could not be sent because the connection to Outgoing server (SMTP) smtp.comcast.net was lost in the middle of the transaction. Try again.

Any help is appreciated.

I have two email accounts, one is hotmail.com, the other is on outlook.com

The SMTP for the outlook account works fine, but Thunderbird puts that same smtp details into the Hotmail account smtp. That also puts into the Hotmail username, the outlooks email address.

If I try to send an email using the Hotmail account, I get a message saying 'Hotmail can not send using xx@outlook.com

If I use the settings to make the username xxx@hotmail.com, it puts that into the smtp of the outlook.com address then that will not send giving the same fault. This has only started this last couple of days, nothing changed in the settings.

This only occurs on my Desktop. On my laptop with same settings it works fine.

Thunderbird is showing up to date?

Help Gerry

Just updated from Ubuntu 20 to 24. Seems Thunderbird has not been auto-updating. I have three email accounts, each with multiple folders and sub-folders. I have three windows open, one for each account because they are for three purposes. Before the change each full height window could accommodate all the folders for its account (plus the un-expanded two lines for the other accounts). Now the folder lines are further apart and they don't fit so I can't tell when a new message arrives in one of the other accounts. Is there a setting for the spacing of the folder listing, and if so, what is it? Similarly I can not see so many messages listed in the classic layout without enlarging that pane and reducing the space for the messages. The spacing is larger than it used to be. Does it have a setting?

Thanks, David

I have found this article to Unify your POP email accounts with a global inbox

https://support.mozilla.org/en-US/kb/unify-your-pop-email-accounts-global-inbox

Is it possible to do the same with IMAP email accounts??

Many thanks in advance

Could anybody help me? Since yesterday morning I have not been able to send or receive emails on Thunderbird.

I have two computers: a laptop and a desktop. On both of them I use Thunderbird as my main email service. On the desktop I also have MS Outlook. I am able to send and receive emails on the desktop on MS Outlook.

Error message on the desktop when I try to send a test email: Sending message failed. The message could not be sent because the Outgoing server (SMTP) mail.rushmore.com failed. The server may be unavailable or refusing SMTP connection. Please verify that your Outgoing server (SMTP) settings are correct and try again.

Error message on the laptop when I try to send a test email: You are about to override how Thunderbird identifies this site. Legitimate banks, stores, and other public sites will not ask you to do this. Location: mail.rushmore.com:587 [get certificate] This site attempts to identify itself with invalid information. Outdated information The certificate is not currently valid. It may have been stolen or lost, and could be used by someone to impersonate this site. [check] [Permanently store exception]

    [Confirm Security Exception] [Cancel]

Interestingly, yesterday I was receiving the same error message on the desktop computer, except the number under Location mail.rushmore.com: was different (not 587). I do not remember what this number was.

My current SMTP server settings: Server name: mail.rushmore.com Port: 465 (Default: 465) Connection security: SSL/TLS Authentication method: Normal password User Name: halina@rushmore.com

Please let me know what I can do about this. Thank you!

Halina Hladysz