Mac Mail Auto delete Trash email from the "On my Mac" trash mailbox

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You can you preferences to delete trash one day old, etc from your trash mailbox by account.

How do you set a preference to delete old email trash from the trash "On my Mac" mailbox?
 

IWT


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Hi rim45 and welcome again.

I'm having a slight difficulty understanding your question, but taking a guess - you can arrange to delete the Trash folder in the following way:

Whilst in Mail > Go into Mail Preferences (Shortcut is Command plus comma) > Click on the Account in question > Mailbox Behaviours > Under "Trash Mailbox" you will see "Erase deleted messages" > Click on the exposure triangles which give a number of Options as per my screenshot: "Never", "After One day" "After one Week", "After one month", "When Quitting Mail". You can do this for each account.

Screen Shot 2019-10-28 at 5.29.46 PM.png

Hope that's what you were after?

Ian
 
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Thanks, however, the Trash Mailbox, for ON MY MAC is not tied to a particular account.

So deleted emails in that mailbox there is no after day option.

Not sure how I am getting trash in that mailbox.

Thanks
 

IWT


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Under On My Mac are a list of Mailboxes and they have to be linked to an email account or several accounts - and as you say, your are getting Trash Into the Trash Mailbox which appears to serve all accounts.. You are doing this - it doesn't do it by itself. Your list of Trash Mailboxes looks like this:

Screen Shot 2017-10-25 at 08.36.03.jpg

What you asked was how to empty the Trash Box - this can be manually or a daily, weekly, monthly basis or when Quitting mail, as I showed you.

Ian
 
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