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Hello, Since I updated my iPhones to iOS 26 hell broke loose. On my iPhone 14 ProI can no longer use Firefox as it quits when I open it On my 15 Pro I can use it but most of the time I half only half of the window. I do want you to be my default browser. Can you help, please? How come there is not one article on this? Many thanks! Natalia Great fan of yours

I am buying a new PC. I would like a 'blank' TB on this machine so I can replan the folders and the email address books. I'd like the current copy on my current PC to be moved to the new PC such that I can access it as I do now but- like a 'sleeping' copy - ie just there to access the emails and address book occasionally/when needed, but not receive new emails.

This will give me a fresh start on the new TB on a new PC, and will save me having to clean up the old TB version. Is this possible? Thankyou

Hello,

I've used Thunderbird on Linux for a while and love it! I use it for multiple email accounts from different providers.

Until recently I manually Archived email in to Local Folders on my PC. I do this to remove email from my mail providers and to avoid storage limits.

I recently learned that if I I set the "Message Archives" option to a specific folder for each account under "Local Folders" I can either manually archive there or I can use an Extension like "AutoarchiveReloaded" to do this semi-automatically. Great!

Unfortunately for my main mailbox only, despite being configured to write to a sub-folder under Local Folders, Thunderbird seems to ignore the settings. It always tries to create an Archive folder in the mailbox itself. Every attempt creates a mess which takes time to cleanup.

The mailbox in question:

• Uses IMAP
• Has "Keep message archives in:" set to "Other:" "Local Folders > Archives > (the name of the account)".

I am concerned that if I try "Keep message archives in:" "Archives" Folder on Local Folders it will combine with all my other archived accounts which are sorted in to sub-folders correctly.

Is anyone able to help please?

Thank you!

I use Thunderbird on Windows and on Mac. I'm wondering why the startup time on Mac is significantly longer on MacOS. I'm currently on Tahoe 26.0.1 but Thunderbird has always been a slow starter. Can I change any setting to remedy this. At the moment I have two mail accounts configured both Gmail.

We've successfully set up a Hotmail account as an IMAP account; all the emails/folders seem to appear properly, though deletions made on Outlook.com don't seem to show up.

But for now, we have this problem: none of the contacts from the Hotmail account appear in the Thunderbird address book.

How can we (1) get those contacts and (2) keep them up to date, preferably automatically.

Thank you.

Greetings! I read everywhere that we must install the Lightning add-on to use the calendar feature in Thunderbird. But when I search for this add-on, I get a bazillion options, none of which appears Lightning. There is something called Lightning Calendar Tabs that keeps coming up. Is this it? Doesn't seem so.

Where can one download/install the Lightning add-on?

Thank you.

I am a M365 - leaver, and working several months now with Thunderbird/LibreOffice/Nextcloud. Sometimes I'm proud of what I learned and can do with the new software. Sometimes I'm a little lost in the woods.

I'm using the add-on Quicktext to insert default html text, like a template, in some of my my emails. One of the templates is a notification for my customers to inform them the invoice they received from me is not yet paid.

In the former software I was used to click in my template on a datepicker to insert the senddate of the invoice. I tried to insert a html-datepicker. This appears in the email, but is send to the reciever as a datepciker, not as the date I choose.

My question. Is there a way to insert a datepicker in a template like Quicktext, or is there a better add-on for this goal?

Thunderbird will not forward to Website of Outlook (or other services like Yandex) for logging into account to setup access via OAuth 2.0. The settings were imported from Thunderbird for Desktop via QR-Code and are working there fine. But not on Android. Can this problem be solved?

I GOT TIRED OF FREQUENT FIREFOX CRASHES (C0000005) IN BOTH THE 64-BIT AND 32-BIT DESKTOP VERSIONS. I HAVE BEEN USING THE 64-BIT VERSION IN WINDOWS 11 (I HAVE A HIGH-END SAGER LAPTOP WITH 32GB RAM. I INSTALLED THE FREQUENT FIREFOX UPDATES BUT THE PROBLEN PERSISTED EVER SINCE VERSIONS 42X WERE RELEASED. I TRIED THE 32-BIT VERSION BUT THE PROBLEM PERSISTED. FINALLED, I TRIED THE DEVELOPER VERSION: NO MORE CRASHES! I READ THE RESPONSES FROM YOUR CLUELESS STAFF TO OTHER CUSTOMERS WITH THE SAME TROUBLE. THIS IS NOT A WINDOWS ERROR; THIS IS A FIREFOX APPLICATION ERROR. MAYBE SOME OF YOUR FIREFOX DEVELOPER CODERS SHOULD ASSIST THE 32-BIT AND 64-BIT DEVELOPERS. OR, DUMP THE VERSION 4X CODE AND BUILD ON THE MORE STABLE 39X CODE. ALSO, DON'T BLAME WINDOWS FOR FIREFOX APPLICATION ERRORS. AND...NEVER SUGGEST A WINDOWS REINSTALL FOR FIREFOX ERRORS!!!

An old forum describes how to sync calendars in Thunderbird. Here is an easy solution - In the left-hand pane of your calendar page, right-click your calendar name/ export calendar - into a removable device. In your other computer - Tools/import/ import from a file/ choose to import calendar - easy!

I have used Thunderbird for years. I am on the esr update channel, 140.3.1 esr, and it says it is up to date. I just learned that there is another update channel, called "release". My Norton Internet Security program tells me that Thunderbird is out of date, and that the latest version is 143.0.1. Maybe it is confused because of the two update channels? Why are two different configurations maintained? Is there a reason that I should switch to the other one? Thanks in advance for any clarification.

When browsing, I sometimes (more often than not) get a Secure Connection Failed message. The Try Again tab clears the problem sometimes (not that often). This problem has just started happening in the last week, during which I have not made changes to any settings in Firefox. This problem does not exist using other search engines for the same site that I am trying to access, and I note that I also get this same failure when trying to access some Firefox webpages. Is there a fix to this other than contacting the web site owner, which I doubt is the cause of the problem, or for ease and simplicity should I just change to another search engine that does not have the problem?

My windows 10 PC died. I copied the the profiles folder from the old appdata/roaming/Thunderbird to the new Win11 PC, but TB does not pick it up, asking to create a new account "John Doe". Any ideas? Best, K.