Thunderbird: Activate spam filter

You can activate a spam or junk filter for email accounts in Thunderbird. This means that dubious emails end up in a spam folder.

Enable spam filter for Thunderbird account

1. Click on "Tools" in the menu bar of Thunderbird.
2. Select the "Account Settings" in the opened menu.
3. Here you will find all the accounts you have set up. Click on the "Junk Filter" on the left of the respective account for which you want to activate the security feature.
4. Finally, check "Activate junk filter for this account".

Mark individual emails as spam

You can also "train" the newly activated junk filter. Mark unwanted emails as junk:

• In the menu bar of the respective email you will find the "Junk" option in the top right corner.

Even with the best filter, it sometimes happens: Trusted emails don't end up in the inbox, but in the spam folder. Then you should recognize the potential phishing mails yourself. Also read how to recover your missing junk folder in Thunderbird.