To mark E-Mails as spam select one or more E-Mails and click on the panel function Spam. As an alternative the fuction Spam can also be activated from the context menu.

The E-Mails will be moved to the Spam folder.

To undo your action, select one or more E-Mails in the Spam folder and click on the panel function Ham. You can also activate the Ham function in the context menu.

The E-Mails will be moved to the Inbox folder.

Note: The Ham function moves the E-Mails back to the Inbox folder, even if the E-Mails were copied to other folders before being marked as spam.