[Bender]

nginx with a simple auth username/password is what I use for non technical people. For some of my lawyers I managed to get them to use SFTP with WinSCP so we could send things back and forth for edits. Using nginx I keep files off commercial leaky spying AI infected platforms that make pinky-promise lies.

[privsen]

Love the self-hosted approach. Pinky-promise lies is exactly my concern with most services. Setting up nginx is more than my parents could handle though. Curious if there is something in between - no third party data access but also no server to maintain?

[Bender]

Setting up nginx is more than my parents could handle though.

The idea in this case would be that case is you are hosting the files and setting up nginx. They could send files back if your web server has an upload interface or they could send files back using SFTP to a chroot sftp-only account. Set up a profile in WinSCP for them. Make a few screen-shots in case they forget. It can be made one-click to connect and one click to sync files.