A method for management of electronic mail, comprising the steps of converting an e-mail message from text to speech, receiving an input request for a selected e-mail message, reading the selected e-mail message, recording a reply to the selected e-mail message, producing an audio file, and sending the audio file as an attachment to a reply e-mail. The metal cation molar ration, defined as the number of moles of metal cations of the metal salt per BET unit area of the silica, is between 9. A coordinated cell system comprises a group of coordinated cell base stations that have the capability to communicate with each other as well as with relevant macro cell or Pico cell base stations via wireless air-interfaces. The second scraper edge comprises a first scraper edge portion and a second scraper edge portion, and the first and second scraper edge portions extend at a first angle with respect to each other. The at least one processor circuit of the digital demodulator may also be programmed for applying a four quadrant inverse tangent to the output function to generate the information signal.