Austin-based Spanning already offers a backup service for the calendar, contacts and documents within Google Apps, giving their customers some peace of mind in the face of (vanishingly unlikely) catastrophic data loss at Google or (far more probable) inadvertent file deletion by the customer themselves. Today the company added a Gmail backup capability. Unlike the existing service, which is free for up to three users per domain, the Gmail backup requires a paid subscription. Many cloud customers probably assume that their cloud provider handles backup already, and often they sort of do. Interesting times lie ahead, as companies like Spanning and Backupify explain why we need them, and as less reputable actors perhaps start trying to dupe unsuspecting cloud users into paying for “backup” services that they really don’t need.