61674445_email__video_conferencing__sms__Disadvantages
[Advantages] Emails are free to send -so long as you have an email account and a connection to the Internet. [Disadvantages] 
If you don't know the email address of the other person then you can't send them a message
Teach ICT - GCSE ICT - methods of communication, telephones, fax, email, video conferencing, sms
Disadvantages