Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for providing communication initiation controls. In one aspect, a method includes receiving a term that a user has entered into a text field, selecting one or more contacts that match the term, providing a communication initiation control for each of multiple communication modes, determining, for each of the multiple communication modes, whether any of the selected contacts are available or are capable of communicating through the communication mode, and enabling or disabling, for each of the multiple communication modes, the communication initiation control for the communication mode based on determining whether any of the selected contacts are available or are capable of communicating through the communication mode.