Question $17(1$ point$)$

After purchasing a few pieces of apparel from the online company Knix, Justine was sent an email that read "Thanks so much for buying from us$.$ Here at Knix, we are always doing our best to improve our existing products and innovate new ones, so we're always interested in hearing from our customers. We would love it if you would share your experience with Knix in a Google Review. You can do that HERE! To say thanks for your support, we'd love to offer you $10$ percent off your next order with the discount code KnixDeal$10."$

This is an example of Knix using email to engage in the tactic of which type of marketing?

content marketing

email marketing

social media

influencer marketing