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Hello,

I recently "cleaned up" my inbox for an email account that is many years old. I did this because old emails that come up in search are found, but blank. So per Mozilla recommendation I "cleaned up" this folder but when it finished it removed every single email except for one from 2011 and starting in mid 2024. Everything in between is either hidden or gone.

What happened and how do I get these back? They weren't deleted as they aren't in the trash.

Thanks!

I am being told by Microsoft that in order to use the New Outlook, I have to sync my IMAP to the cloud, so I'm looking for an alternative email client that allows me to work offline with pst/ost files. Does Thunderbird allow this? Also very concerned about data breaches and security. Thanks!

I use Thunderbird 128.10.2 esr (64-bit) on a Mac Book Pro. For some reason, I can no longer change the font color of my outgoing messages. Even my saved templates now all have black text rather than the black and red text that I set them up with.

I didn't change any settings or preferences - this must have happened when the software was automatically updated.

How do I change the color of the text? I only want to change the color of specified parts of my email - not every word.

Hello Thunderbird Support Team,

I’m the founder of Jobgap, and we use Thunderbird to manage dedicated alias email accounts for our users under our registered domain orbitalpost.com. These emails act as bridges for job applications, and it’s critical for our global team to access them reliably.

Here’s the issue we’re facing:

I (based in London, UK) can configure and use our Orbitalpost email accounts in Thunderbird without any issues. Auto-detection works and manual configuration (IMAP/SMTP) also connects fine.

However, my staff based in Nigeria and India consistently encounter errors when attempting to configure the exact same accounts in Thunderbird. The most common error is: “Thunderbird failed to find the settings for your email account.”

They’ve tried both auto-detection and manual setup, but Thunderbird either fails to detect settings or won’t connect.

Technical details:

Domain: orbitalpost.com

IMAP server: imap.orbitalpost.com, Port 993, SSL/TLS

SMTP server: smtp.orbitalpost.com, Port 465 (SSL/TLS) or 587 (STARTTLS)

Authentication: Normal password

Username: full email address

What we’ve observed:

Accounts work perfectly in London but not in Nigeria/India.

This makes me suspect either a Thunderbird autoconfig issue, DNS resolution issue across regions, or ISP-related SMTP port blocking.

Questions for Thunderbird Support:

Is there a way to create a Thunderbird autoconfig file (autoconfig.xml) for orbitalpost.com so all staff accounts auto-detect settings, regardless of location?

Could Thunderbird be failing due to DNS lookups that resolve differently in different regions?

What’s the recommended best practice for ensuring Thunderbird works reliably for distributed teams using custom domains like ours?

I’d appreciate any guidance or documentation you can provide — we need to ensure Thunderbird works consistently across regions, as it’s core to our operations.

Thank you, Leke Ayodele Founder, Jobgap London, UK

Hi folks,

New to Mac after 40 years of Windows using Outlook for Windows very successfully. Power User.

I do not like Mac Mail or its three pane model. It has quirks such as an individual email window will not remember its screen position! Outlook for Mac is neutered. So I consider Thunderbird.

Will Thunderbird:

1. Use Mac contacts? 2. Use Mac calendar? 3. Open a single email in a separate window that remembers its size and positions? 4. All me to delete or not and move to the next unread message from the separate window?

With these answers, I can get more granular about deciding if Thunderbird is the solution I am seeking.

Thanks!

~Bob

Am I missing it, or is there no undue function for Thunderbird mobile on Android. I don't know about anybody else, but I occasionally delete an email I don't want to. It would be really nice just to have an undo button to get it back rather than have to search through deleted emails.

Will you please add Local Folders to Android Thunderbird? I use desktop Thunderbird mainly to import mbox files into Gmail (which happily exports them by Takeout) so without Local Folders the Android app is useless for me.

Thunderbird version: 140.1.1esr (aarch64) MacOS 15.6

After the most recent Thunderbird update, I noticed that one of my local folders was completely empty. When I do a search for an email that was in that folder, the email shows as a search result, but when I click on the search result, it opens a new tab and says 'no message found' - although a preview of the email is visible in the search results.

I have tried restoring a backup of the local folders from my Time Machine backup, and while restoring those files did wind back all the other local folders and emails, it did not restore any emails into the problematic folder, even going back to my oldest time machine backup on the 26th of May this year - when I know the emails were still accessible - didn't help.

It's clear that the emails are still there, in some form, since the search function can sort of find them, however there is an issue retrieving and viewing them.

I am hoping someone can help! Thank you in advance, Claire.

I receive a lot of emails that are really just the attachment (usually invoices etc.) So I right click the attachment and save it and then hit the "Delete" button to delete the email to the recycle folder. This has always worked fine in the past but now it tries to delete just the attachment, which is still selected following my save, warning me that it will permanently delete the attachment. This is a nuisance more than anything else. However when you hover over the delete button it describes itself as "delete this message" not this attachment, so the behaviour is both wrong and annoying. I can find no settings that will change this behaviour.

Since a while my maila ddresses are no longer autocompleted. Browsing through this forum I ried different approaches but nothing helped. How did this happen and how can I get back to what I had? Thanks in advance, Silke

While composing an email, Thunderbird freezes, then fades. I'm able to "X" out to close Thunderbird and to restart it. I have the latest Thunderbird version (138.02 64 bit) installed. How can I stop these intermittent freezes?

hi i am getting this message from thunderbird?

The folder 'Inbox on <redacted>@Alarmtek.com' could not be compacted because writing to folder failed. Verify that you have enough disk space, and that you have write privileges to the file system, then try again. bold text