Gmail – How to copy the filenames of attachments in Gmail

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How can I copy the filenames of attachments in Gmail?

I can't find a good way in the new interface that was introduced last year:

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I don't want to have to download the attachment to get the filename.

Best Answer

The easiest thing I've found is to select "Show Original" from the message menu, then search with my web browser (Ctrl+F) for "Content-Disposition". That jumps me to the part of the email message where the attachment (or one of the attachments) is encoded. One of the pieces of meta data is the filename.

snippet of encoded file attachment in email original text