HEIGHT OF REPETITION:
Forwarding an email to someone and receiving the same email forwarded back to you by someone in the receiving chain.

HEIGHT OF ISOLATION:
Two persons sitting side by side using emails to communicate with each other.

HEIGHT OF COWARDICE:
Two persons fighting through emails.

HEIGHT OF HELPLESSNESS:
Receiving no emails for a week.

HEIGHT OF FRUSTRATION:
The email server being down.

HEIGHT OF CARELESSNESS:
Writing an intimate email and doing a 'Reply All.'

HEIGHT OF ACHIEVEMENT:
A person sending email to a girl wanting to become friends and getting a reply.

HEIGHT OF TIMEPASS:
A person sending email to himself . . .