Wormhole lets you share a file or a folder of up to 10GB to anyone with the link. The files are encrypted and expire after 24 hours. One nice feature (besides the size of the files) is that you can immediately share the link while the file (or files) are uploading. The recipient will download as you upload.
I could see using Wormhole as a way of sharing files to people outside of my work domain, especially large files or a bunch of files.