I'd say probably when the person you are contacting prefers communicating via call or text or another form of messaging. For almost anything professional or business related, it would be appropriate and acceptable to email.
<em>False</em>, he did not feed the sheep-he ate them, since he had no other food/possesions.
You should’ve added a picture so we can answer the “tone” of the sentence.
Answer:
The main idea is that you have to go through the hardships of being an expert horseman to become a Pony Express rider.