Yes, you can get 15% off your first purchase with Brooks Brothers coupon codes when you sign up for the e-newsletter. Start by logging onto their website. Then, you'll either receive a pop-up box asking you to sign up, or you can scroll to the bottom of the page and enter your email address.
Once you enter your email, another pop-up box should appear to confirm that you are subscribed. It will also ask you to select your specific interests so they can create emails that will better serve you.