Thunderbird Community Forum

I received an email on 02/25/2026 that was a egift card from a local small business. The egift card was from with Square account. When I went back into my inbox the next day to use the egift card, the email was gone. I looked in all my folders and didn't see it anywhere. How can an email just disappear? When I contacted the small business, they said they can't honor the egift card without the 16 digit # on the egift card. I showed them the receipt for the purchase but it doesn't not show the 16 digit code for the ecard, only shows the purchase of a gift card. So how do I find this email with the egift card?

this was the email address from the purchase invoice. noreply@messaging.squareup.com

I don't recall the actual email address the egift card was from other than I saw it was from a Square account.

The calendar has a way for you to see all calendar events. Is there anyway to view all calendar tasks? My goal is to clean up the calendar by removing old tasks.

Can get(POP3), but can not send emails to a newly created personal outlook.com account.

the following error occurs when trying to send mail: Unable to authenticate to Outgoing server (SMTP) . Please check the password and verify the 'Authentication method' in 'Account Settings | Outgoing server (SMTP)

all my setting are correct per thunderbird and microsoft:

  (smtp-mail.outlook.com, port 587,  STARTTLS, OAUTH2, xxxxx@outlook.com)

thunderbird error log file contains the following: . . . mailnews.smtp: S: 535 5.7.139 Authentication unsuccessful, SmtpClientAuthentication is disabled for the Mailbox. Visit https://aka.ms/smtp_auth_disabled for more information. [CH5P220CA0005.NAMP220.PROD.OUTLOOK.COM 2026-02-28T23:29:21.878Z 08DE7703D4D1982A]

SmtpClient.sys.mjs:452:17 mailnews.smtp: Command failed: 535 Authentication unsuccessful, SmtpClientAuthentication is disabled for the Mailbox. Visit https://aka.ms/smtp_auth_disabled for more information. [CH5P220CA0005.NAMP220.PROD.OUTLOOK.COM 2026-02-28T23:29:21.878Z 08DE7703D4D1982A]; currentAction=_actionAUTH_XOAUTH2 SmtpClient.sys.mjs:578:19 mailnews.smtp: Error during AUTH XOAUTH2, sending empty response . . .

Based on my understanding its seems thunderbird is using SMTP AUTH instead of OAUTH2 as required for newer personal outlook.com accounts. Is my assessment correct? If so, is there a fix?

One of my two outlook email accounts no longer appears in Thunderbird, which says it is authenticated but not connected. This happened suddenly. I can still get the messages by going onto outlook.com. How do I get it back on Thunderbird?

I have already donated but the donation request still fills much of my screen. How do I remove it?

Also my email times are in Pacific time even though I have tried to correct to Eastern.

I'm managing multiple email accounts in my Thunderbird installation. (Note: NOT multiple Thunderbird profiles, but things like a Gmail and an Outlook account under the same Thunderbird profile). I'm trying to remove an email account from the Account Settings menu, but clicking the red "Delete" button does nothing. I've opened up the Error Console/Developer Toolbox, and when I click the Delete button, the following error message gets logged:

``` Uncaught TypeError: can't access property "incomingServer", currentAccount is null AccountManager.js:894:18

   onRemoveAccount chrome://messenger/content/AccountManager.js:894
   oncommand chrome://messenger/content/am-main.xhtml:1

```

A screenshot of the menu is attached. Note that the "Account Name" field also stays blank for whichever account I choose, despite all of them actually having names and showing up in other locations in the application.

good day....ii hope someone can help. the other day i was accessing my yahoo account spam folder and by accident, i deleted the spam folder instead of emptying it. the spam folder is now sitting in the trash and i'm unable to remove it from there. when i log into my actual yahoo account, the spam folder is where it's supposed to be and not in the trash. i tried removing the yahoo account from thunderbird and reinstalling it in hopes that it would rectify the problem, but it hasn't. does anyone have a solution?? i would greatly appreciate any help you can offer. thank you for your time...mike s

Hello, For many years I have used Thunderbird, but since update to v148, I have recieved an "Authentication failure while connecting to server imap.aol.com" + "connection to server pop.gmail.com timed out". All the passwords, imap in & out settings are correct, the antivirus/firewall is not blocking. The AOL page pops up for access but does not accept the passwords. I have as of now lost all my emails. I appreciate the security improvements which, sadly, are necessary, but will there be an update to correct this soon.

Hi, somehow thunderbird forced me to use OAuth for caldav and carddav. (v140 on linux) Unless I've probably missed something this approach doesn't seem to have considered that people might use more than one device. In the past I had an application password per device with my mail provider. That password covered imap, smtp, caldav and carddav. The application password I could set with a specific name at my mail provider. If the device was lost, compromised or whatever I just deleted that one application password at my mail provider, problem solved. Now a regular thunderbird setup has the application password for mail and 2 OAuth records per device under "Connected Apps" at my mail provider. But it is not possible to see anymore to which device the OAuth record belong, as there is nothing device specific coming along with these OAuth records, just an IP. With that perspective OAuth weakened my security options, as I can only guess which OAuth record I have to delete in an emergency case. Did anyone who implemented that with Thunderbird considered that people may have more than 1 device? Maybe even more than 5 devices? That OAuth approach looks unmanagable to me. Is there a way to switch OAuth off in thunderbird, until it becomes more useable in >1 device setups?

Cheers Tjareson

Hi there,

if I enter an appointment in my Google-calendar in Thunderbird, it is visible in Google but not in Thunderbird. The problem appeared a few days ago. Newest update is installed.

Where is the catch?

Thanks Stefan

Since an update to 148.0 Thunderbird no longer retains the log in details for my various google calendars. Every morning I get a blank diary and need to delete all the calendar details then renew them by adding them in again. It's never done it before (over many years!) so what's going on?

I am trying to set up a visualization of the columns of the main interface. Here's what I do:

1. Click on the list icon in the top right corner.
2. Uncheck the columns I want to hide. Specifically, From (CB), Recipient (CB), and Correspondents (CB).
3. Apply the selection to all folders: click on the icon in the top right corner, apply columns to.. > folders and its children... > select account > Confirm

These actions produce immediate results. However, the next day or a few days later, when I reopen the program, the column display changes. Sometimes in the main folder (inbox), sometimes in the subfolders.

Is this a known bug? Is there anything I can do to keep the desired column configuration stable?

Hello,

I've moved last week from Microsoft Outlook from Mozilla Thunderbird on my MacBook Pro laptop for managing my e-mail accounts.

I've added an Outlook account (e-mail xxx@hotmail.com) to Thunderbird. However after using Thunderbird a few days I've discovered that some sub-folders in my private folders are missing.

I've added in attachment an image showing my folders on my mobile phone (using Microsoft Outlook) and an image showing my folders on my laptop (using Thunderbird where both 'Bureau' and 'Instruments & Lumières' are missing).

Thank you in advance for your help.

Best regards, David

Operating system: ubuntu 24.04. Thunderbird version 148 snap. Since the latest update, whenever a reminder appears onscreen it is squashed up into a square instead of a letter-slit oblong and is difficult to get rid of. Klicking on the close button has no effect and while klicking on X temporarily removes it, it comes back in a matter of minutes.What is happening and how can I stop this?

I downloaded TB Supernova ver. 115.18.0 (32 bit) to my wife's old Gateway computer. (Win 7 Ultimate Svc Pk 1 32bit). However, after manually configuring the server settings, I get the above error message. Additional information: This old Gateway had Thunderbird on it at one time - don't know the old version. It worked, then quit after an upgrade, and I haven't been able to get it to work since. The ISP provider still has our original password, and I can log into their email server and see 81K worth of emails. I have a Toshiba laptop, also Win 7 64bit, and TB SuperNova is installed and working on it. I used the server settings from my Toshiba to manually configure TB on the Gateway... Any ideas as to what to try next? Peter

I've checked and double check as well has changed the outgoing settings from 465 to 587. Nothing works. Help148.0 Sending of the message failed. An error occurred while sending mail: Outgoing server (SMTP) error. The server responded: resomta-h2p-555627.sys.comcast.net resomta-h2p-555627.sys.comcast.net Excessive failed authentication, ESMTP server temporarily not available.