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How to Make Thunderbird Automatically Delete Marked Junk Mail

Thunderbird is equipped with a junk email folder that spam and garbage mail goes to by default. The problem is, emails in the junk folder just sit around and take up space until you manually go in and delete them. If you’re careful about what you mark as junk, you won’t need to worry about this folder. Here’s how to send emails that you mark as junk directly to the trash.

Open Thunderbird and select Tools >> Options.

thunderbird tools > options

In the options window click the Security >> Junk tab. Then check both When I Mark Messages as Junk and Delete Them. Click OK to save changes.

options security junk when i mark messages as junk delete them

Now emails that you mark as junk or spam will go straight to the trash and no longer take up space on your local disks.

marked as junk = go straight to trash

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4 Responses to How to Make Thunderbird Automatically Delete Marked Junk Mail

  1. LD80061 March 30, 2014 at 2:33 pm #

    Thank you for this post. More useful information is always welcome!

  2. aar October 9, 2015 at 12:33 pm #

    Great stuff! Thanks for this tip.

    Now, how can Thunderbird delete this junk automatically, before they even get sent to me?

    If that’s not possible, can Thunderbird delete them without any action on my part?

    • Hugo November 19, 2015 at 3:46 am #

      @aar, go to ‘Preferences >> Account Settings’, for each account you have a ‘Junk Settings’ tab, here you can check the ‘Move new junk messages to:’ box, and choose if you want them moved to a specific ‘Junk’ folder or elsewhere, like ‘Trash’.

      • Hugo November 19, 2015 at 3:47 am #

        do not forget to check from time to time that the junk automtic detector is doing a good job, in particular that it does not delete important messages. Therefore I recommand using the sepcific ‘Junk’ forlder, and screen it manually once a month or so.

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