Send multiple GIFs files to proofing at the same time

Our creative internal and external agencies create GIFs for a lot of marketing activities as its a popular/effective format. At times for one project we create multiple GIFs - so if we create three options, the stakeholder would have to click on three separate links to review them today, We need to have to possibility to send multiple GIFs files to proofing at the same time, for reviwers to see all the different versions in a single proof, today we can upload different versions but that is a lot of manual work and waiting time for different versions to be created.