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I am unable to move an email from my inbox to my folders.Thunderbird is unable to complete.Get [clientbug]append error message.AI informed me that yahoo did an upgrade and Thunderbird now has is issues with Yahoo and needs to do a upgrade.Is this true?

I accidentally dragged and dropped the "Inbox" of a POP3 account into the "Drafts" folder, nesting it there. I tried to drag the "Inbox" back to its proper location (directly under the account), but I am unable to drop it (the cursor indicating a valid drop target does not appear). What should I do?

Hello,

I urgently need technical assistance with a serious issue involving Mozilla Thunderbird and my professional certified email account (Aruba PEC, Italy).

I have been using Thunderbird to manage my professional email correspondence for several years.

I organize processed emails into yearly folders (2024, 2025, 2026, etc.), located under my email account in Thunderbird, not under Local Folders.

Today, October 13, 2026, I discovered that all emails dated January through September 2026 have disappeared from my "2026" folder.

Only emails from October 2026 remain.

The missing messages include professional correspondence, certified email delivery receipts, acceptance receipts, and potentially legally significant communications.

What I have verified so far:

The "2026" folder exists both in Thunderbird and in Aruba Webmail.

Both display the same remaining emails from October.

The Trash folder is empty.

The 2024 and 2025 folders still contain their messages.

Thunderbird's retention settings are configured to "Don't delete any messages."

The "2026" folder inherits the account's retention settings.

I did not knowingly delete or move these messages.

Aruba customer support informed me that they cannot restore the missing emails.

I checked Windows Previous Versions and OneDrive, but no backup was found.

I located the local Thunderbird mailbox file named "2026" in the profile's ImapMail directory. It is approximately 3 MB.

Inspection of a copy of this file did not reveal message headers from before October 2026.

I could not find another larger copy of this mailbox file in the Thunderbird profile.

I occasionally remove unused folders under "Local Folders", but I do not recall deleting any folder containing these messages. The affected "2026" folder is located under the IMAP email account.

My questions are:

Could Thunderbird have deleted or moved these messages automatically despite the retention settings?

Could IMAP synchronization, folder corruption, message filters, or compaction explain this situation?

Are there any additional Thunderbird files, caches, databases, or recovery methods worth investigating?

Is there any way to identify when or how the messages were deleted?

What steps should I take to prevent further data loss?

I have preserved a backup copy of my Thunderbird profile and would prefer not to perform potentially destructive operations.

This is particularly serious because the missing messages are part of my professional and legally relevant correspondence.

Any technical guidance would be greatly appreciated.

Thank you very much for your help.

I have been using emails without problem until recently but since a few days ago, it suddenly happened that I now cannot attach files. I have reinstalled software but still I cannot. I was asked to ask email provider so I asked nifty but they have not responded. Another issue, after reinstalled software, description is now shown in English. I can understand it but I would like to know how it can change to Japanese. I would appreciate very much if someone can help to solve this issue. Thank you very much. redacted@nifty.com

WHY HAS A CERTIFICATE BEEN DENIED ON MY THUNDEREBIRD ACCOUNT..HEAPS OF EMAILS HAVE BEEN STUCK IN LIMBO...WHY?

jOHN BREHENY EMAIL ---[redacted from community support forum] @aussiebroadband.com.au please reply to my questions??

I drag messages from Thunderbird's Sent folder into subfolders under Thunderbird's Gmail account but when I log into Gmail directly the messages have not moved out Gmail's Sent folder even though the tags show the subfolder where they should have been placed. What can I do to have those messages appear in subfolders as they do when I am in Thunderbird?

When I transfer messages from an on-line email account to a local folder, they do not display in the local folder. Activity manager states the messages have been transferred.

Hello,

I would like to understand how to configure Thunderbird with IMAP accounts so that moving messages to Local Folders automatically removes them from the mail server.

I am currently experiencing this issue with Gmail.

1. Manual message moving

When I manually move an email from the Gmail Inbox to a Thunderbird Local Folder, the message is successfully moved locally. However, on the Gmail server, the message remains in the Inbox and is marked as read instead of being deleted.

2. Automatic message filters

I have configured message filters in Thunderbird to automatically move certain incoming emails to Local Folders.

The messages are successfully moved to the specified Local Folders, but instead of being deleted from Gmail, they appear to be archived and remain on the server.

Expected behavior:

- When I manually move an email from an IMAP folder to a Local Folder, it should be removed from the mail server. - When a message filter moves an email to a Local Folder, it should also be removed from the mail server. - Messages moved to Local Folders should retain their original read/unread status.

My questions:

1. How should Thunderbird be configured to achieve this behavior? 2. Are there specific settings for deleting messages from an IMAP server after moving them to Local Folders? 3. Does Gmail require additional IMAP configuration to ensure that moved messages are actually deleted rather than archived? 4. Is there a recommended way to configure message filters for this purpose?

My goal is to use Thunderbird Local Folders for storing emails while removing the original messages from the Gmail server to free up storage space.

Thank you for your help.

In Thunderbird I configure my account, in yahoo.com I give my id and password, and I get an error : "Aucune application disponible" No apps installed that can open "...gCvAFzpx2caBemWF_6MsSxdS0HnbPWCB2H7an-Y". Yoou can find more apps in Centre d'applications.

I'll welcome an answer

Recently I updated Thunderbird. When it rebooted, all my emails in the INBOX and ARCHIVED folders were gone. I have tried the usual solutions, including REPAIR FOLDER buttons. Those archived messages were important. Any chance of finding them?

in Thunderbird email until last night I had folders I had set up for my old emails subdivided into subfolders for finance medical etc. I also had a folder for sent mails This morning they have disappeared and been replaced by folders INBOX drafts INBOX sent INBOX spam and INBOX Trash; all are empty. How do I recover the old folders and their contents?