Email Cab: a disposable inbox with a fare meter

Why it surfaced

Email Cab gives an ordinary privacy tool a memorable transit-system interface: “Hail another,” “End the ride,” and “Waiting at the curb.” Its rules are unusually explicit for the category: it cannot send mail, strips attachments, blocks remote images, and says operational logs rotate after seven days.

A free temporary email service that generates an inbox without signup and deletes its messages within 24 hours.