Yellowtag.com Yellowtag.com is email based lost property retrieval service. It's a tagging system, which links a unique tag number to your email address. If you lose your stuff, the finder simply emails the address on the tag. Yellowtag passes on the message instantaneously to your registered email address, helping you to contact the finder. we have recently launched new services like TeleFind (telephonic notification), Sms based Activation that make the system very customer friendly. Developed in ASP, MS-SQL and VB components.