Answer
The best ways to create subject lines for email are;
•	Keeping it short and to the point
•	Maintaining a familiar sender name
•	Avoiding the “no-reply” sender name
<u>The best reaction would be to send a follow-up piece of content that builds off the subject</u>
Explanation
The essential elements that a subject line of an email should possess are; 
•	it should show urgency such as use of a phrase like ,”Act now!”
•	Create curiosity in the subject line
•	The subject line such show relevance and time consciousness