This application adds a button to the sidebar of the Zendesk ticket interface. When clicked, it'll open up WeTransfer in a new window, with the recipient's e-mail address prefilled with the requester of your ticket. Optionally it also adds any cc or follower to the recipient list. You can also add a custom message.
This app can be installed as is and will automatically open WeTransfer with either the requester, or the requester and followers added as recipients for your uploaded files. If you wish you can add your custom WeTransfer Pro domain in the settings, allowing you to generate upload links with your custom domain instead of the generic WeTransfer domain.