Hello @Sheen_Ildephonse
Here you need to automate email and the pplication to upload the file.
So the first part is to automate email to download the file. For that you can use the email activities in uipath. Which email provider are you using?
For uploading the file, use application/browser activity and open the application.
Then use click activity t click on the upload button.
Enter the file path and clikc on Ok( use type into and click acitivity)
Thanks