From an article in PBS.org:
“One app promotes itself as a way to discuss sensitive negotiations and human resources problems without leaving a digital record.
Open government advocates fear that private messaging apps are being misused by public officials to conduct business in secret.
“Another boasts that disappearing messages “keep your message history tidy.” And a popular email service recently launched a “confidential mode” allowing the content of messages to disappear after a set time.
“The proliferation of digital tools that make text and email messages vanish may be welcome to Americans seeking to guard their privacy. But open government advocates fear they are being misused by public officials to conduct business in secret and evade transparency laws.”
You can read more at: https://to.pbs.org/2uELALZ.