Inbox eSIM sells data-only travel eSIMs for 196+ countries, with country, regional and Global packs from 1 GB to 50 GB, plus a Day Pass in many countries (3 GB a day at full speed, then 1 Mbps, for 3 to 30 days). Buyers pay in USD by card, Apple Pay or Google Pay and receive the QR code and a one-tap install link by email in about a minute, with no app and no account. Top-ups go on the same eSIM, an unused eSIM that was never installed can be refunded within 30 days, and support answers by email around the clock.