This article is for Gmail users who have the Chrome extension installed.
In a Folio Smart Folder, you’ll be able to see a list of all of the files and attachments that are part of emails in the folder. The files are ordered newest to oldest. Clicking on a file opens the email it is associated with, so you always have the context for the file.
To add a file to Folio, add the email the file is attached to into the smart folder. The file will then be available in the Folio sidebar.