Thunderbird Community Forum

For years I have used the extension 'Calendar Tweaks' because it colorizes the entire event in the calendar. This extension is no longer compatible with versions of Thunderbird after 74 so I have stop updation after Version 69. However in resolving problems with authorization I needed to update to the current Version of Thunderbird so my events in the calendar now just show the category color at the edge of the box instead of the entire box. Is there a way in Thunderbird to colorize the entire event box or another extension that does this.

Outlook says that it will no longer let third party mail apps like Thunderbird to access Outlook email as of September 16, 2024? What do you recommend?

"Action Needed – You may lose access to some of your third-party mail and calendar apps

Update your sign-in technology before September 16th, 2024 to maintain email access.

The safety and security of your information is top priority for Microsoft. To help keep your account secure, Microsoft will no longer support the use of third-party email and calendar apps which ask you to sign in with only your Microsoft Account username and password. To keep you safe you will need to use a mail or calendar app which supports Microsoft’s modern authentication methods. If you do not act, your third-party email apps will no longer be able to access your Outlook.com, Hotmail or Live.com email address on September 16th.

What do you need to do?

If you are receiving this email, you are currently using an email or calendar app that uses a less secure authentication method to connect to your Outlook.com email account. You will need to upgrade your third-party mail and calendar app to a version which supports modern authentication methods.

Microsoft provides free versions of Outlook for your PC, Mac, iOS, and Android devices which can be easily downloaded and connect to your email account. Using an updated version of an Outlook application will ensure you are connecting in the most secure way.

How can you set up your Gmail, Apple Mail, or other third-party mail application?

Various non-Microsoft applications will have their own steps for connecting to your Outlook.com email account using modern authentication methods. See our help article - Modern Authentication Methods now needed to continue syncing Outlook Email in non-Microsoft email apps. However, you may need to contact the creators of those applications to provide you with instructions. In many cases, simply removing and re-adding your account with the latest version of that application will configure it to use modern authentication methods.

Privacy Statement

Microsoft Corporation, One Microsoft Way, Redmond, WA 98052 USA"

I just got a new computer running windows 11 pro. I downloaded Thunderbird, which I used on my old computer(windows 11), and followed the steps to set up my email. I know my email address and password are correct as well as the server settings and I keep getting the following error "Unable to log in at server. Probably wrong configuration, username or password". My email is .verizon.net which is handled by AOL. My husband also uses Thunderbird and verizon email and I checked the configuration against his computer and everything matches. I was able to get my gmail account added so it must be something with aol or windows 11 pro. Any help is appreciated.

How can I change the subject prefix (Re:, Fwd:, etc.) ? I would prefer "RE:" to "Re:" for my outgoing mails. "mailnews.localizedRe" handles recognition of incoming subject prefixes, but I found no pref for my outgoing mails. Thank you!

質問お願い致します。 先程、誤ってメールを送信してしまいました。 受信側のメールも削除したいのです。 申し訳ありません。 回答よろしくお願い致します。

Please ask any questions. I sent an email by mistake earlier. I also want to delete the email on the receiving side. very sorry. Thank you for your reply.

I recently created a new profile, changing from POP3 to IMAP in order to meet the new Microsoft security requirements. All went well until I went to change my address book backup copy routine to access my address book in the new profile.. I cannot find any .MAB nor .SQLITE files anywhere! My address book is out there somewhere, as I can bring it up in Thunderbird, but I cannot find the actual file. What's going on?

Running TB 115.12.2 (32-bit), Windows 10 10.0.19045 Build 19045

I opened Thunderbird this morning and there were no issues. Closed it and just now reopened and I'm getting this message: Thunderbird detected a potential security threat and did not continue to live.thunderbird.net. If you visit this site, attackers could try to steal information like your passwords, emails, or credit card details.

It downloaded 28 emails but will not let me see/access them.

Can anyone help? Thanks, Linda

For months I was experiencing the problem of "Thunderbird not responding" occasionally. It was a short duration issue (a few seconds to a minute). I reinstalled Thunderbird several times without success. I read almost every comment available online about this problem and I tried many ideas and recommendations I found without success. Most recently the problem became so serious that it was not a nuisance any longer. It was nearly impossble to work waiting for minutes to open an email or to continue typing while preparing a message and being interrupted by the problem I am describing. I ran Thunderbird in safe mode and determined that none of the add-ons is causing the problem. I turned the firewall OFF and determined that firewall was not causing the problem. I then decided to run Thunderbird in Offline mode and found that the program works normally. Then while in Offline mode I decided to download more messages and the program asked me if I wanted to switch to the Online mode. I said yes. New emails were downloaded and without going back to the Offline mode I was able to work normally without any occurrence of the "Thunderbird not responding" problem. I have been using this workaround for several days now. I download a number of eamails. I try working in Online mode and I cannot do it. I switch to Offline and work fine. I switch back to Online mode and I don't see the problem any longer for the whole day. Do you have any idea as to the origin of my proble? I am running Thunderbird 115.10.2 64 bit on Windows 11. I had the problem originally using Lenovo T490s and more recenlt Lenovo X1 Yoga

I am running Thunderbird version 115.4.1 on the Windows 11 system. Having Thunderbird active (even in the background or minimised) stops the Windows key from working. How can I get the Windows key to work normally without closing down and exiting Thunderbird?

Our Thunderbird is set up with 2 email accounts - Gmail & Cox cable. Actually 3 as my wife also uses TB for her Cox emails. Cox is moving over to Yahoo. Not a fan of Yahoo. Eventually I will either set up another Gmail account (cox was for subscriptions or when a business needs an email address) and my has a Gmail already, but she does not use TB for that as for her Cox is her main email.

So can I delete our Cox emails thru Cox web email site without losing our emails currently in TB? And will that mess things up as TB sends and receives email from cox cable?

Any tips and suggestions much appreciated.

Need to increase the spacing between messages in the message list window in Thunderbird. The solution provided in the forum thread "https://support.mozilla.org/en-US/questions/1314785" is not helpful.

duplicate of /questions/1438116 thread. Also it is Thunderbird and not Mozilla.

Connect my server to Mozilla. I need my Mozilla reached through AOL now. Please help me back into Mozilla.

I am unable to Quit Thunderbird. MacOS Sonoma; TB 115.6.1, Mac Pro 2019. Hang text below:

AdapterDeviceID: 0x66a3 AdapterVendorID: 0x1002 Add-ons: google%40search.mozilla.org:1.0,bing%40search.mozilla.org:1.0,amazon%40search.mozilla.org:1.1,chambers-en-GB%40search.mozilla.org:1.0,ddg%40search.mozilla.org:1.0,wikipedia%40search.mozilla.org:1.0,default-theme%40mozilla.org:1.3 AvailablePhysicalMemory: 40525901824 AvailableSwapMemory: 1040973824 BackgroundTaskMode: 0 BuildID: 20240105183125 ContentSandboxCapable: 1 ContentSandboxLevel: 1 CrashTime: 1705981620 DOMFissionEnabled: 1 DOMIPCEnabled: 1 EMCheckCompatibility: true GpuSandboxLevel: 0 GraphicsNumRenderers: 0 HeadlessMode: 0 InstallTime: 1705709005 LastStartupWasCrash: 0 MacAvailableMemorySysctl: 94 MacMemoryPressure: Normal MacMemoryPressureCriticalTime: Unset MacMemoryPressureNormalTime: 1705981506 MacMemoryPressureSysctl: 1 MacMemoryPressureWarningTime: Unset MozCrashReason: Shutdown hanging at step XPCOMShutdownThreads. Something is blocking the main-thread. Notes: FP(D00-L1000-W0000000-T010) WR? WR+ GL Context? GL Context+ ProductID: {3550f703-e582-4d05-9a08-453d09bdfdc6} ProductName: Thunderbird PurgeablePhysicalMemory: 729776128 ReleaseChannel: release SafeMode: 0 SecondsSinceLastCrash: 222 ShutdownProgress: xpcom-shutdown-threads ShutdownReason: AppClose StartupCacheValid: 1 StartupCrash: 0 StartupTime: 1705981506 SubmittedFrom: Client TelemetryEnvironment: {"build":{"applicationId":"{3550f703-e582-4d05-9a08-453d09bdfdc6}","applicationName":"Thunderbird","architecture":"x86-64","buildId":"20240105183125","version":"115.6.1","vendor":null,"displayVersion":"115.6.1","platformVersion":"115.6.0","xpcomAbi":"x86_64-gcc3","updaterAvailable":true},"partner":{"distributionId":null,"distributionVersion":null,"partnerId":null,"distributor":null,"distributorChannel":null,"partnerNames":[]},"system":{"memoryMB":98304,"virtualMaxMB":null,"cpu":{"count":32,"cores":16,"vendor":"GenuineIntel","name":"Intel(R) Xeon(R) W-3245 CPU @ 3.20GHz","family":6,"model":85,"stepping":7,"l2cacheKB":1024,"l3cacheKB":22528,"speedMHz":3200,"extensions":["hasMMX","hasSSE","hasSSE2","hasSSE3","hasSSSE3","hasSSE4_1","hasSSE4_2","hasAVX","hasAVX2","hasAES"]},"os":{"name":"Darwin","version":"23.2.0","locale":"en-GB"},"hdd":{"profile":{"model":null,"revision":null,"type":null},"binary":{"model":null,"revision":null,"type":null},"system":{"model":null,"revision":null,"type":null}},"gfx":{"D2DEnabled":null,"DWriteEnabled":null,"ContentBackend":"Skia","Headless":false,"EmbeddedInFirefoxReality":null,"adapters":[{"description":null,"vendorID":"0x1002","deviceID":"0x66a3","subsysID":null,"RAM":0,"driver":null,"driverVendor":null,"driverVersion":null,"driverDate":null,"GPUActive":true}],"monitors":[{"screenWidth":5120,"screenHeight":2880,"scale":2}],"features":{"compositor":"webrender","hwCompositing":{"status":"available"},"gpuProcess":{"status":"unused"},"webrender":{"status":"available"},"wrCompositor":{"status":"available"},"openglCompositing":{"status":"available"},"omtp":{"status":"unused"}}},"appleModelId":"MacPro7,1","hasWinPackageId":null},"settings":{"blocklistEnabled":true,"e10sEnabled":true,"e10sMultiProcesses":8,"fissionEnabled":true,"telemetryEnabled":false,"locale":"en-GB","intl":{"requestedLocales":["en-GB"],"availableLocales":["en-US","en-GB"],"appLocales":["en-GB","en-US"],"systemLocales":["en-GB"],"regionalPrefsLocales":["en-GB"],"acceptLanguages":["en-GB","en"]},"update":{"channel":"release","enabled":true,"autoDownload":true,"background":true},"userPrefs":{"browser.cache.disk.capacity":1048576,"browser.fixup.alternate.enabled":false,"browser.search.region":"GB","layout.css.devPixelsPerPx":"1.5","network.proxy.autoconfig_url":"<user-set>","network.proxy.http":"<user-set>","network.proxy.ssl":"<user-set>","network.trr.strict_native_fallback":false,"widget.content.gtk-high-contrast.enabled":true},"sandbox":{"effectiveContentProcessLevel":1,"contentWin32kLockdownState":3},"addonCompatibilityCheckEnabled":true,"isDefaultBrowser":null,"defaultSearchEngine":"google","defaultSearchEngineData":{"loadPath":"[addon]google@search.mozilla.org","name":"Google","origin":"default","submissionURL":"https://www.google.com/search?q="}},"profile":{"creationDate":13599},"addons":{"activeAddons":{},"theme":{"id":"default-theme@mozilla.org","blocklisted":false,"description":"Follow the operating system setting for buttons, menus and windows.","name":"System theme — auto","userDisabled":false,"appDisabled":false,"version":"1.3","scope":4,"foreignInstall":false,"hasBinaryComponents":false,"installDay":18925,"updateDay":18925},"activeGMPlugins":{"dummy-gmp":{"version":"0.1","userDisabled":false,"applyBackgroundUpdates":1}}}} Throttleable: 1 TotalPhysicalMemory: 103079215104 URL: https://www.mozilla.org/en-US/privacy/thunderbird/ UptimeTS: 113.76406045 Version: 115.6.1 XPCOMSpinEventLoopStack: default: nsThread::Shutdown: IMAP useragent_locale: en-GB

This report also contains technical information about the state of the application when it crashed.

Can I upgrade my Thunderbird 115.3.1 from 32 bit to 64 bit?

My Thunderbird has recently automatically updated to V115.3.1 but remains 32 bit. When I go to the Thunderbird download page there doesn't appear to be a choice of version.

In the past, I had followed this post and created the userChrome.css file so that when I have my emails shown in Table View, if one email within a thread is unread, the whole thread is collapsed, but the subject line remains in bold.

With this latest Thunderbird update to version 115.13.1 I have lost the functionality; now the subject line of the collapsed thread shows as underlined. How can I go back to my preferred bold view?

Thanks

HELP HELP HELP Duplicates continue to be generated as of latest Thunderbird Version 115.6.1. Final Solution?? Running on my MacOS Ventura 13.6.3 (22G436). Fully updated and kept as my babe!! Same as my Thunderbird. Using the [**Remove duplicates...**] official tool to fix it, but continues to appear always after some time.

Use a lot of dayly maintenance on my mails, creating _new-folders_ continuously and moving mails depending on subjects as needed. Continuously maintaining, Always _empty-trash_ followed immediately by _compact-folders_ Always try to do weekly backups.

Duplicates Still never ended since so long been reported!! Any way to fix the issue once and forever??

Do not need/want to suffer a complete platform crash on my loved mailer. Would be a complete disaster. Obviously I keep on backing up once per week.

Thanks a million if you try to help, and kudos if you solve it. Take care.

I've just installed TB 115.6 on my MacBook to see if I like it better than Apple Mail. There is one thing that seems weird to me. Fonts are displayed larger in the Read window than in the Write and Reply windows.

These are my font settings: Default font: Helvetica, size 14 Composition, HTML Style: font: variable width, size: medium

Now if I send an e-mail to myself the font looks larger once I receive the message than what it looked like when I was composing it. And then if I reply to this message the font becomes smaller again in the Reply window.

The font in the Write window has the exact same appearance as in Apple Mail where I also defined Helvetica 14 as the default font. So my suspicion is that the fonts are somehow scaled up in the Read window. But why? And how to change it so that the same font looks the same everywhere?

My thunderbird works okay, but when I select emails from imbox folder to delete it takes too long. I researched to find the problem and the only option I found was to add an exclusion to the profile folder on my windows security antivirus. Now I can select emails from the imbox and delete them without a problem, but my concern is if I will be vulnerable to virus.