Most of these files are obvious attachments, such as PDFs or photos you might have received, but also less obvious files, such as images embedded in signatures. These are files that you probably didn’t even know were on your computer, to begin with. It will only delete attachments that were automatically downloaded as some sort of caching measure by the opening system. It should be noted that this method is virtually risk-free and will not delete attachments that you have yourself saved to a specific folder on your computer.

This article will show you how to delete old email attachments on your Mac and regain storage space in the process.

And over time, this can add up to several gigabytes of storage space if you aren’t being careful. As we’ve seen in the past, there is a way to tweak this and stop the Mail app from downloading all attachments, but it will still locally download attachments that you open. By default, the Mail app on your Mac downloads all email attachments you receive to the computer, eventually taking some serious amounts of storage space.

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