Final answer:
A follow-up email sent two days after newsletter sign-up with a discount is an example of automation in email marketing, which uses triggers for timely and efficient communication. Option C is correct.
Step-by-step explanation:
The scenario where a contact receives a follow-up email with a discount two days after signing up for a newsletter is an example of automation in email marketing. This concept involves setting up email campaigns that automatically send out messages based on certain triggers or actions taken by the contact, in this case, signing up for a newsletter.
Automation can highly improve efficiency and ensure timely communication with contacts. It reduces the manual work needed to send out emails individually and helps maintain consistent contact with subscribers.
This is an example of automation in email marketing. Automation refers to the use of software to send targeted emails automatically based on certain triggers or actions taken by the contact. In this case, the contact signing up for the newsletter triggered the follow-up email with a discount.