A messaging app keeps everything, for years. Some messages don't need to stay.
A voice, difficult news, a memory. She listens once, somewhere quiet, with nothing to install.
A note, a photo. Visible while the finger stays pressed, then nothing.
A contract, a payslip, a quote. Opened once, and it doesn't stay in mailboxes.
An ID, bank details, a door code. In a messaging app they stay for years. Here, they erase themselves.
Each person gets their own link. If one opens it, the others keep their access. Everything erases once everyone has read it, or when time runs out.
Confidence