email vs voicemail

email

noun
  • A system for transferring messages from one computer to another, usually through a network. 

  • A message sent through an email system. 

  • An email address. 

  • A quantity of messages sent through an email system. 

verb
  • To send (something) through email. 

  • To send, or compose and send, an email or emails. 

  • To send an email or emails to. 

voicemail

noun
  • A computerized interactive system for storing, processing and reproducing verbal messages left through a conventional telephone network. 

  • An individual message on such a system. 

How often have the words email and voicemail occurred in a corpus of books? (source: Google Ngram Viewer )