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When I send an email from my account dezandcathy@optusnet.com.au, I receive a message "Your message was sent but a copy was not placed in your sent folder (sent mail) due to network or file access errors. You can retry or save the message locally to local folders/sent mail-dezandcathy@optusnet.com.au" This problem has only occurred within the past week. For some of my sent emails, I have retried sending the message and it has appeared in my sent email folder, but not for all the emails I have retried. Checking with the recipients, they confirm receipt of my emails even though they are not shown in my sent email file. Can you suggest a solution? Thank you Derek Maule

When setup the SMTP server, under the security and Authenication; only "User Name" is provided, but there is no "Password" field provided for input, please resolve this problem.

I have several subscribed IMAP folders. I have a schedule set to check them every hour. But only the Inbox folder is checked. All other folders are checked only if I access them myself. Help me pls.

I have smtp.gmail.com set up as my outgoing server (port 465, username = my gmail address, Authentication = OAuth2, connection security = SSL/TLS, also tried STARTTLS with port 587). There doesn't appear to be any way to set the password in the "Outgoing Server (SMTP) Settings", even when I click "Edit". Nor can I add a password to the "Edit/Privacy&Security/Saved Passwords" dialog box (which allows you to see existing passwords or remove them, but not add any).

When I try to send an email, the "Sending Message" dialog box pops up, and after a few seconds a second box pops labeled "Login to account 'smtp.gmai.com' failed". This box has three buttons: "Enter New Password", Cancel and Retry. Clicking on the "Enter New Password" button does not offer me the chance to enter a new password--instead, it immediately takes me back to the "Sending Message" box, which then immediately takes me back to the "Login...failed" box. There is never an opportunity to enter the password!

TBird 140.7.0esr, Thunderbird for Linux Mint. Mint version 22.3.

Sending works ok if I choose a different SMTP server.

For the last few days my Unified Inbox which is fed by three of my email accounts stopped displaying incoming emails in the Unified Inbox folder. I am running Thunderbird Desktop version 140.2.1esr | Released September 2, 2025 on a Win 11 PC. The incoming emails show up in their Thunderbird accounts OK in their own Thunderbird Inboxes but they no longer also show up in my Unified Inbox. I did not change any setttings that I know of but the Unified Inbox just stopper working properly.

I have gone to the Unified Inbox's Properties and deselected each individual inbox and then selected them and no change. I deleted the cach and no change. The Unifed Inbox is set to "Match all messages."

I am guessing it is a bug in the latest Thunderbird update but perhaps someone can offer a fix I have not tried yet. Thank you!

I'm blocked by cbl.mailcore.net, so I can't receive my mail. I've contacted spamhause but I still can't get the thing to work. So have you any idea, what I'm gonna do ? Sincerely Keld Friis

A "send later" button came up one morning instead of the usual "send" button. When I clicked on the write button to see where the "send" button was, several choices came up but when I clicked on the "write" choice I lost the other choices and now can't get back to the original write button and still no "send" button appears anywhere on the menu. I can save messages to Draft but still can't actually send them. I can still receive emails, just can't send them! Help!

How can I get the "send" button back in my menu. I am not offline. I am receiving messages and can write and save messages to draft but there is no SEND button in my menu anywhere to enable me to send messages out.

I have for a while been getting popups that TBird is unable to write email to a mailbox.

'Unable to write the email to the mailbox. Make sure the email system allows you write privileges, and you have enough file space to copy the mailbox'.

I saw that at least one other person reported this, and the suggestions included:

1. Rebooting. Done, no effect. 2. Antivirus interference. I am using standard Windows antivirus. Have been using same for years without issue.

The problem does not appear to interfere with writing to mailboxes. Seems to be an erroneous popup only.

If I sent emails via my iPhone or iPad, they show immediately in the Sent folder on iCloud.com (visible in a web browser). But ones I am sending now on my Mac (Tahoe 26.3, ARM) using Thunderbird don't show in the Sent folder.

I really have no idea how long this has been the case - I just tripped on it as I was trying to verify that an email had in fact been sent from my Mac. (I'm a senior - maybe they never got saved and I just never noticed).

I sent a number of emails to myself - they arrived but don't show in the Sent folder.

Maybe I need to set some value in the email header to have it saved? Or something there is suppressing saving? Or they are not suppose to appear there?

Thanks for any insight. David

Hi all,

everytime I open Thunderbird I get a popup window from Yahoo finance with a server timeout message. I am unable to connect to get my emails through. I need to log on directly to Yahoo mail, which is a pain.

Hopefully someone can help me with this.

Find attached the popup image.

Regards

I have v.13 of Thunderbord for Android Outgoing server settings match those recommended by Rogers/Yahoo, except that there is no Password field. App says SMTP server settings are valid, but when I try to send I get "Mailbox unavailable" error.

When I try to receive emails a message comes up regarding POP3. I've tried all the settings suggested, 465 (SSL/TLS) with Normal password 587 (STARTTLS) with Normal Password - this setting solved the emails going out but, now the emails aren't coming in.

Sometimes when I request get messages I get the error that POP3 not accepted, sometimes nothing. Help