2. list two reasons why email subject lines are an important part of writing email messages.

-Subject Lines convince the recipient that the email is worth reading

-subject line is a summary of the whole mail

Explanation:

Subject Lines convince the recipient that the email is worth reading. when sending an application for a job offer, it is important to add a more catchy subject line. This will prompt the recipient to treat the mail as urgent and appropriate. People have no luxury of time to read through thousands and hundreds of emails. But a subject line will convince them to open your mail or not

2.subject line is a summary of the whole mail. subject line can help you summarise a body of mail if short and concise. if you are trying to send a complaint to a large organisation, the help desk can get a good glimpse of your email body and send to any department that will treat your mail appropriately