17) Appropriate metrics to measure with email marketing campaigns include the following, except Select one:

a. open rate

b. click-through rate

c. unique visitors

d. conversion rate

18) Appropriate metrics to measure with email marketing campaigns include the following, except Select one:

a. open rate

b. click-through rate

c. unique visitors

d. conversion rate

19) Appropriate metrics to measure with email marketing campaigns include the following, except Select one:

a. open rate

b. click-through rate

c. unique visitors

d. conversion rate

20) When an online retailer sends an email to a customer about a purchase that was just made, it is a Select one:

a. transactional email

b. broadcast email

c. triggered email

d. onboarding email