Yes. Subject lines play an important part in getting your customers to open your emails. Rubin Manzoor, Content Marketing Manager at Contact Monkey, says “emails need to have an interesting subject line to grab readers’ attention.” Sometimes it takes more than one tries to get it right — it’s good to test a few different options. According to HubSpot email newsletter analysis, “47% of marketers say they test different email subject lines to optimize their emails' performance.”