Windows 10 reached EOS (end of support) on October 14, 2025. If you are on Windows 10, see this article.

Avatar for Username

Przeszukaj pomoc

Unikaj oszustw związanych z pomocą.Nigdy nie będziemy prosić Cię o dzwonienie na numer telefonu, wysyłanie SMS-ów ani o udostępnianie danych osobowych. Zgłoś podejrzaną aktywność, korzystając z opcji „Zgłoś nadużycie”.

Więcej informacji
Otwarte

Thunderbird 153.0.1 new folders cannot be used

Thunderbird E-mail i wiadomości
ultrafox1 odpowiedziano
ultrafox1
ultrafox1

I have used Thunderbird with the same email account for years, creating subfolders and moving emails to the subfolders with no issues.

With Thunderbird 153.0.1, after creating a new subfolder in the account, when attempting to move emails to the new folder, I receive the following error:

"Thunderbird: The current command did not succeed. The email server responded: APPEND invalid flag list"

I have used Thunderbird with the same email account for years, creating subfolders and moving emails to the subfolders with no issues. With Thunderbird 153.0.1, after creating a new subfolder in the account, when attempting to move emails to the new folder, I receive the following error: "Thunderbird: The current command did not succeed. The email server responded: APPEND invalid flag list"

Wszystkie odpowiedzi (1)

ultrafox1
ultrafox1 Zadający pytanie

Here is some information supplied by the email account provider:

When creating a new folder, the server shows error: "{imaps} Bad flag in APPEND command: Nonjunk"

The error is clear — the IMAP server is rejecting the APPEND command because Thunderbird is sending two junk-related flags simultaneously:

$notjunk — a valid IMAP keyword flag NonJunk — a non-standard flag (no backslash prefix) that the server doesn't accept

This is a Thunderbird-side behavior — it's sending both $notjunk and NonJunk together when moving messages to newly created folders, and the server's IMAP parser rejects NonJunk as invalid.

Zadaj pytanie

Aby odpowiadać na posty, musisz zalogować się na swoje konto. Zadaj pytanie, jeśli nie masz jeszcze konta.