Há algo que eu possa fazer para restaurar meus e-mails?
O Recuperar o suplemento de mensagens excluídas deve ser capaz de recuperar seus e-mails , desde que você ainda não tenha compactado a pasta .
Outra opção é Recuva de Piriforme que pode recuperar emails excluídos. Existe uma versão gratuita disponível.
Nota:
Antes de tentar qualquer um dos itens acima, não se esqueça de fechar o Thunderbird e fazer um backup. Pelo menos faça um backup manual dos arquivos com os quais você irá trabalhar.
O que é o complemento Recuperar mensagens excluídas?
The Recover deleted messages add-on adds "Recover deleted messages" to the folders context menu (right click on the folder).
It will work with any folder that has a mbox file (POP account, Local Folders, or IMAP offline folders created via
Tools->Account Settings->Synchronizing & Storage) if you haven't compacted the folder yet.It can recover messages whether they are deleted normally, or permanently deleted using Shift+Delete.
Fonte Anular a eliminação de uma mensagem
O que é o Recuva?
Recover deleted emails
Email programs like Outlook Express, Windows Live Mail, or Mozilla Thunderbird don't store emails individually. Rather, they store each folder as a database file. For example, there might be a folder for the Inbox, another for Sent Mail, another for Drafts, one for the Trash and another for emails you've saved.
When you empty the email program's Trash, the email program empties that database file. Instead of restoring the database file, Recuva goes one step further and recovers emails individually.
When you recover emails with Recuva, they appear in a compressed .ZIP file (for example, Outlook Express.zip). You can use any standard ZIP file reader (including one built in to Windows) to open the .ZIP file up and see the emails inside.
Each email is stored in a standard .EML format, which means that you can import it to any email program -- not just the one it was sent or received from.
Fonte Recuva - Recursos