When using email clients such as Thunderbird IMAP, you may still be able to enable a policy or a setup that will cause emails to be removed from the server. This may be confusing as you may not see email messages in our server but could be present in a local folder on your machine.
Thunderbird allowsw removing old messages from both, the server and local copies. The following can be found in Account Settings > Synchronisation and Storage:
![](/xsupport/wp-content/uploads/2022/05/Thunderbird-cleanup-storage-imap-1.png)
There are also other settings under Folder Properties > Retention Policy: that allows you to modify how and where the emails are being stored and processed.
![](/xsupport/wp-content/uploads/2022/05/Thunderbird-cleanup-storage-imap-2-1.png)
Please make sure these storage settings do not conflict your interest in how your email messages are accessed from multiple clients including our webmail client at https://mail.psmail.net/