The Dropbox Importer Addon for Envira Gallery allows you to import images from your Dropbox account, straight in to your Envira Galleries.
Once the Addon is activated, you’ll need to authenticate Envira Gallery with Dropbox, to grant Envira read only access.
After that a new Dropbox tab is added during the gallery creation process, so you can start adding photos from Dropbox into your WordPress galleries.