Dropbox add-on for Gmail launched on Android, iOS version coming soon
Moreover, the add-on makes it easier to save files from your email to Dropbox, so the more reason to use it. Also, since you will be able to access your Dropbox account directly from Gmail, you won't have to switch between apps any longer. On top of that, shared links will always point to the latest versions, which means you won't have to update email threads when files are updated.
Last but not least, the new Dropbox add-on enables users to add links to any file or folder in their Dropbox so that anyone can access it without installing special software. It's a pretty neat feature that will probably make you stop worrying about file size or inbox space.
If you want to take advantage of the new Dropbox add-on for Gmail, you can download it for free via G Suite Marketplace. Although it's only available on Android, an iOS version will be released soon.