Vegan Leather Co$.$ is a brand that sells vegan wallets made out of cactus leather. They have just launched a digital marketing campaign, including an email marketing campaign in the US$.$ Vegan Leather Co$.$ sent out emails to its existing customers containing discount codes for their newly launched products along with a link to purchase them.

How can Vegan Leather Co$.$ optimize its email marketing campaign?

Monitor website traffic

Track the number of social media followers

Analyze the dwell time

How many customers made a purchase after clicking on the email link