Hi<br/><br/>Please tell me all of the following sentences are natural.<br/><br/><b>1) You can do the booking by email.</b><br/><br/><b>2) You can do the booking via email.</b><br/><br/><b>3) You can do the booking through email.</b><br/><br/><b>4) You can do the booking on the telephone.</b><br/><br/><b>5) You can do the booking via telephone.</b><br/><br/><b>6) You can do the booking by telephone.</b><br/><br/><b>7) You can do the booking through telephone.</b><br/><br/>Thanks,<br/><br/>Tom