There are simple services that exist that — when a user fills-out & submits a <form> on the Web that simple service e-mail someone that data.
These simple services are alternatives to more complex back-end with a database.
An alternative to this alternative could be — instead of e-mailing someone the submitted data, send that data via the Fediverse using ActivityPub.
ActivityPub them. (Can “ActivityPub” be a verb‽)
Probably as a private DM.