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My MacBook is becoming unstable due to limited disk space the major culprit for which is a mysterious category called "Other". Poking around a bit (a lot actually) I find that I have over 650 GB of Other, 330 GB of which is in a single file in

~/Library/Containers/com.apple.mail/Data/Library/Logs/Mail

called

imap-mail.outlook.com-<GUID>.txt

What is this file? Is it safe to delete it?

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  • I can't tell you if it is safe to delete nor what this file exactly is. If your system is backed up, I would just try to delete it and see what happens. No file should be this large, especially not a .txt file from the apple mail client. – X_841 Oct 28 '20 at 18:42
  • @X_841Giving that a try! – orome Oct 28 '20 at 19:17
  • In general deleting a log file shouldn't do any harm other than you/a specialist later on might not be able to troubleshoot issues that you had previous to deleting the file. This post also talks about deleting log files in general: apple.stackexchange.com/questions/272929/… – X_841 Oct 29 '20 at 10:44
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Simply delete the file. It's even safe to do this while Mail is running.

Accumulation of these files can be prevented by choosing Window > Connection Doctor in Mail and making sure "Log Connection Activity" is unchecked.

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