With our Outlook Add-in, you can easily attach documents on Thread to any email sent from Outlook, saving you time downloading documents and uploading them from your desktop.
Open your Outlook App.
Click New Email in the top left pane.
In the New Email pop-up, open the Thread for Email Add-in and search for a matter that you want to select attachments from to this email.

To find out more about Outlook add-in functionalities, go to Thread for Email Outlook Add-in.