Q47: What is the ideal length of an email subject line? Q47: What is the ideal length of an email subject line? Sherry | 2026-5-19 21:18 | 3 | HubSpot Email Marketing Certification 77 字 | 1 分钟内 This is question 47 in the HubSpot Email Marketing Certification practice test. All questions are based on the official HubSpot Academy exam. Question [Multiple Choice] What is the ideal length of an email subject line? Options 41-50 characters ✅ 55-75 characters 10-20 characters 75-100 characters Answer Correct Answer: 41-50 characters Explanation The ideal subject line length is 41-50 characters for optimal display and engagement. ← Back to all HubSpot Email Marketing Certification Questions 赞赏 certificationexam answersHubSpotHubSpot Email Marketing