Developers of Facebook-owned messaging app WhatsApp are reportedly working on the long-awaited unsend feature. According to reports, the feature will allow users to delete sent messages within 5 minutes. A tweet from WABetaInfo, which leaks information related to WhatsApp updates, reads, “WhatsApp Web 0.2.4077: many improvements for the revoke feature & you'll be able to unsend messages sent within 5 minutes (SIC).”