Techniques are disclosed for indicating a hyperlink in a message as being inappropriate for a specified user environment, such as an office or an educational setting. In one embodiment, a message may be received from a sending user and to a receiving user (e.g., by a sending mail client or by a mail server). The message may include a hyperlink. If a message includes a hyperlink determined to be inappropriate for the specified user environment, a property of the message may be set to indicate as such. Optionally, the sending user may be notified that the hyperlink is indicated as being inappropriate for the specified user environment. The receiving user may also be warned not to activate the hyperlink that is determined to be inappropriate.