Hello thunderbird support team, Maybe someone can direct me to how fix an issue to create backup my emails and only have my inbox and sent email of this year. (2025) I don't know if I am doing something wrong or is this a thunderbird bug report? I am using AOL, as my email provider. Goal is the create a folder of each year with all the emails received and sent that year into an archive folder. How I preform this task. 1. I create folders with thunderbird, these folders are then pushed into my AOL email account called archive folders. (works fine) 2. I move (highlight and drag) my inbox emails into a folder by a year, which removes them from my inbox, and this puts a copy of each email into the archive folder that I dragged them too. (works fine) 3. I do the same function (highlight and drag) my '''sent emails''' as I did in step 2 above. (deletes all the emails, that were in that folder that were inbox emails (received emails) that I wanted to save. Here is the question. Why would moving my sent emails to the same archive folder, '''delete '''my saved INBOX EMAILS in that were in the archive folder? I lose completely and can't find them, not in trash, only the Sent emails are left in the file after 3 above is performed. I would have thought that both the inbox (received emails) and sent emails would coexist in the same file! With maybe the sent arrow to identify the sent emails from the inbox emails. I tested this a few times with small batches of emails and each time I lost the inbox email in the Archive folder. When I created the Archive subfolder for '''2023 Sent''' year see below, (photo) to store my sent emails, nothing we deleted in my 2023 Archived inbox saved emails. Conclusion: for some reason, both Received INBOX and SENT emails''' can not be combined in one Archive folder? ''' Really? Regards Eric S