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When T-Bird sends a message with an in-content photo, is that photo compressed to save space and transmission time?

I converted from Eudora. Eudora would compress in-content photos to save space and transmission time.

If T-Bird performs a similar action, is that compressed file saved somewhere?

I'm trying to sync Thunderbird Calendar with iCloud. Every time I enter the password generated by iCloud, Thunderbird indicates that the credentials are incorrect. Any suggestions?

Sorry for the long=winded message but I figured it would save time to explain the steps from the beginning.

I've been using Thunderbird as an OSB for my archived messages from Apple Mail. In that scenario I create a .mbox file of all messages I want to save from a particular year and then import that into Thunderbird into a local folder with the year as the folder name. The version of Thunderbird where I was doing that is 115.10.1

I started testing Thunderbird version 139.0.2 as an Apple Mail replacement with only 2 of my email accounts.

Now I want to convert entirely out of Apple Mail. First I made a backup copy of the entire Thunderbird folder located in the User/Library folder onto an external hard drive that I then disconnected from my computer.

Then I downloaded the latest version 145.0 (aarch64) and installed it. (I still have the other 2 versions on my system) I opened it up and got into the profile manager (troubleshooting then about profiles) and discovered that I have 4 of them. I made the one that contains my archive the primary one. It does not have any connections to a live email account. I've only ever imported an .mbox file. Everything that I've archived is there. This is profile Number 1. I renamed it Archive so I could keep track of it.

Then I opened up each of the other 3 profiles in a new browser in sequence to see what they were.

It appears as if I have one that is empty. it opens up wanting me to set up an existing email address. I closed that one down. It's called Profile number 2.

The next one appears to be the current one for the 2 test email accounts. It has them properly configured, showing messages in the inbox and with the messages that are supposed to be archived off in the local folders I had created as I expect. I am calling this one profile number 3.

The third one first had me add the passwords for the 2 test accounts and then it is pretty close to number number 3 but is missing some of the local folders. This is called profile number 4.

Want I want to end up with is 1 profile. I would prefer to start with the one that has all my archive messages in their local folders, and then add the test accounts including all their messages from profile number 3 with its local folders. Once they are safely moved and part of the Archive profile I would like to delete all three numbered profiles. Once I am down to only one active profile and no others lurking about I plan to slowly start adding the rest of my email accounts moving them one by one out of Apple Mail and into Thunderbird.

I've read the various articles on moving out of Apple Mail into Thunderbird So I believe I can add the Apple email accounts to my Archive profile successfully. I have the import tools so I can import the .mbox files from Apple mail into those accounts.

Where I'm stuck is I can't seem to find an article that gives me detailed instructions on how to combine profiles within Thunderbird. All the articles imply keeping multiple profiles active and I would prefer not to do that.

I am sure I am just not searching properly but I am at a loss as to how to proceed. I do not want to delete any profiles or start adding more accounts until the profiles are cleaned up.

Thanks for reading this long explanation and I appreciate any help anyone can provide.

I've been using Thunderbird for over 20 years and I run it on two PC (to have a copy at home and in the office) Running 144.0.1 (32 bit) on Windows 10 and same but 64 bit on the other. The problem is with the 32 bit PC although I don't think this has anything to do with the problem.

Came back to my PC today and my inbox emails are not opening. About 88,000 emails in the inbox can't be accesses but the list of the email info are showing. Click on any one and it's blank.

I have no idea why this has happened, my only ideas are they could be connected with one of the following: 1. A windows restart and update 2. Kaspersky internet security deleting a trojan virus from an email in the inbox and deleting the whole inbox file instead - I have already asked Kaspersky support and they said it would not delete the whole file but I'm not so sure. 3. It might have lost the email when doing a 'compact folder' but I think this is unlikely.

When I closed and restarted Thunderbird any new email coming into the inbox worked perfectly but still the 88,000 previous ones were not visible/readable.

Any help would be appreciated as I'm completely stuck It's strange I only had this problem on the 32 bit version of Thunderbird? Thanks, Brian

I suddenly this week cannot send email using Thunderbird (v. 140.4.0esr (64-bit)). I receive email fine. I can send email using webmail with my provider. Error message in Thunderbird is: "Sending of the message failed. An error occurred while sending mail: Outgoing server (SMTP) error. The server responded: resomta-h2p-555359.sys.comcast.net resomta-h2p-555359.sys.comcast.net ESMTP server not available (62240/216.183.125.238)." My provider says the issue is not at their end because my server settings are correct. Outgoing SMTP port is 465, connection security SSL/TLS. Operating Windows 11 v. 24H2.

To be clear, I seriously doubt the problems I am encountering are TB's fault! The problems may be my fault since I've grown older, I've tended (believed) using new versions of software present my mind a BIGGER challenge than using the older software/version I have been successfully using? I'm still using Version115.10.1

After our ISP chose to start using Zimbra Oct. 7, 2025 and their tech support could not assist me in getting TB working the had me remove POP3 settings for TB and change to IMAP with their software.

FINALLY someone helped me get TB working with IMAP. For 3 days grrr. Now the ISP says I need to use their web mail, Zimbra.

So might downloading the current TB version and somehow get the In box, all the folder contnets etc. over - into the new TB help?

I was going to backup everything tonight, now I have little to NO hope, without help!

THANKS & remain WELL plus be SAFE!

Robin

I am trying to export my contacts FROM Thunderbird TO Spectrum email. In Thunderbird, I open my contacts and select my personal address book and click EXPORT. I save the file as vcard to my desktop. I open my Spectrum.net email and click import, select the file and I keep getting an error message saying "we are unable to save your changes, please try again." I contacted Spectrum and they said it was a Thunderbird problem. Can you please help me?

How do I get back the choice to get a message brought in manually and other features that were above my account name. I unchecked a box (it was called something board) and it was gone but cant find it to restore the option. I right clicked on that to get a drop down menu with a few choices. I cant remember exactly what they said. One of the icons was for manually bringing in my mail, like a refresh option as well as some other choices beside it. This was visible above my account name which is just above the inbox. Anyone have any idea where I find that again to restore it? One click and it was gone! :-( Hope I explained it good. Thank you

On the 20, of October I was forced to re install Windows 10. Kept my data but I had to re install all my apps. With Thunderbird I follow the same procedure I used with Firefox: After installation I copied the profile folder from my backup and replaced the new one. That worked out well. With Thunderbird, I followed the same procedure, all my emails where there but not my local folders. I am attaching several snapshots to illustrate my steps. Image 1 "local folders now" Image 2 "Profile Folder". (why there are 2 sub-folders)? Image 3 "Mail in the profile folder" Image 4 " List of folders in my Local Folders" The are there, how do I get them back on Thunderbird in the correct place "Local Folders"? Thank you for your help again. Regards Ilio Pieroni

My Tags window & folder [View, Folders, Tags] layout stopped properly displaying all my items with the appropriate "tag" set in the past few updates to T'bird. I recently switched to version 140.4.0esr but the problem existed before that in 140.2.1 as well. Is there any way to force a "rebuild" of the Tags window so that all my tagged items show in their appropriate categories, with appropriate statuses [read/unread, etc]? Otherwise, the Tag feature is no longer useful.

I was trying to change the time emails are kept on the server so I went into "Account Settings" and now Thunderbird is locked onto this page. I get a "Mozilla Thunderbird not responding" message when I try and click on anything and I can't get out of this page nor access my Inbox. I've tried starting Thunderbird in Safe Mode which didn't work. I then uninstalled and reinstalled the latest version of Thunderbird but when it starts it goes straight back to the frozen "Account Settings" page. I've checked my profile and there is a new profile that was created with today's date. There is also a profile from June 2025. If the old profile contains all my emails and folders up to yesterday, that would be OK.

I've been wanting to access Thunderbird's encryption ability on both my laptop and desktop. However, in setting up Tbird on my laptop I notice the user Profile should stay on one computer. Can I use the same Profile on more than one computer using the same source and password? Can I open a new profile on a second computer, even though I would have to use the same email source, a local provider? If not, is there an online source of email data I can use on Tbird on my laptop. Thanks much, Bruce Bartrug

Somehow I have many emails on the same topic (like 40 or 50 of them, going back over several months, even years) all piled up on top of each other, and then I have to close them all one at a time when I need to switch off my PC.

It does not seem to be due to being in Conversation View. I have followed 2 or 3 videos re how to get out of Conversation View, going into settings etc, only to discover I appear to be not in it in the first place.

Is threading different from conversation view?

two images. first image, the email that I SENT TO MYSELF, from my android phone, captured a product link, sent the link to me, and opened it on my desktop (or even opened on teh phone) and the HTTP link does NOT indicate it can be open,and if i hover over it, it does not open either.

BUT, if I FORWARD that same email to me (opened on desktop, forwarded to my email, and opened on desktop), it ALLOWS me to open it. why are the links not working if i send myself an email from my phone (where i browse products, etc, and caputere the links)? any assistance appreciated, thanks

Please assist When I go to send a email,I add scanned Documents as a attachment<but in the email Before I send it,I cannot open the attachments It shows Could not be opened,because the associates helper application does not exist chanhe the association in your preferences I have attemped to do the above,But I need your HELP Thank you Darryl. </p>

Today my Windows 11 pro operating system updated itself to Version 25H2 (OS Build 26200.7171) When I opened Thunderbird it required me to put my account details in and then accessed my IMAP details. All my folders and sub folders were there but no Local Folders. How can I import them into Thunderbird please. Thanks

How can I check if I am supporting Mozilla financially? I just received an email asking for a donation but thought I was already donating. Is there somewhere in my account settings where I can check if/how I am donating?

I've been a Thunderbird(TB) user for many years. Or I should say "was". A few months ago my computer was hacked. As a result I was unable to access my TB account. Since then I've had no choice but to use Gmail.

  When I lost access to TB I also lost all of my contacts. Is it possible to get a list of those contacts. Even if it was just the names, and not the passwords, that would still be big help. My  username here was pwrichcreek@twc.com. That email address is no longer valid.

Thanks for your consideration, SweetTasha