A method of facilitating a telephonic response to an electronic message is described. The method includes determining at least one telephone number from a received electronic message, and assigning the determined telephone number dynamically to a button on the telephone to provide a speed dial button on the telephone. Determining the telephone number may include comparing an electronic mail address in an address field of the electronic message with a telephone directory to determine a telephone number associated with the address. If the electronic message is a text or a voice message, determining the telephone number may include parsing a body of the message to determine a telephone number, if present, which has been included into the body of the text message.