One-Time Secret

[simon]

OneTimeSecrete as selfhosting would be a perfect Cloudron addition!
Securely distribute sensitive data such as passwords etc. with your own domain. Would be great!
https://github.com/onetimesecret/onetimesecret

[A Former User]

Not to be confused with several similarly-named projects.

Please correct this one to "One-Time Secret" in this issue title.

Share a secret - One Time
https://onetimesecret.com/

[jdaviescoates]

I've just been playing around with PrivateBin (which works way better than HasteBin which is really hard to use on mobiles) and noticed it can be used for this, i.e. you can create a password protected paste that can only be viewed once.