octave:8> file_contents
file_contents = Hello Dear Igor Kalnitsky,

I hope you are good.
Did you get my previous mailing?
It is important that we talk.

John Cohen(ECOWAS Liaison office)
Kofi Annan International Peacekeeping Training Centre (KAIPTC)

octave:9> word_indices  = processEmail(file_contents);

==== Processed Email ====

hello dear igor kalnitski i hope you ar good did you get my previou mail it
is import that we talk john cohen ecowa liaison offic kofi annan intern
peacekeep train centr kaiptc

=========================
octave:10> x = emailFeatures(word_indices);
octave:11> p = svmPredict(model, x);
octave:12> p
p = 0