Hello, I have linked all my other mail accounts (e.g. gmail, yahoo etc ...) in thunderbird (central mail repository). This is very useful as thunderbird is one window wherein I can see all my mail from my other mail accounts (there is no need for me to login separately into gmail or yahoo to read the mails from that account). I want to setup thunderbird as a central mail repository for all the mails from all my other mail accounts. My issue is that whenever I delete a mail from my other mail accounts (i.e. gmail or yahoo account), the same mail gets deleted from thunderbird also.

How do I prevent the deletion of email in thunderbird even if I delete the mails from my other email accounts (i.e. gmail, yahoo etc ...).