If you are using a supported mail client (Outlook & Thunderbird), you can easily indicate which e-mail messages should have been detected as spam. Doing so helps improve the efficiency of the antispam filter.
1. Open your mail client.
2. Go to the Inbox folder.
3. Select the undetected spam messages.
4. Click the Is Spam button on the Bitdefender antispam toolbar (normally located in the upper part of the mail client window).
The messages will be immediately marked as [spam] and moved to the junk mail folder.