Which statement about send-time optimization is true?

• A. Send-time optimization involves random sending across the day.
• B. It schedules emails when recipients are most likely to engage; factors include time zones, industry patterns, and historical engagement.
• C. It ignores historical engagement data.
• D. It is primarily about subject line testing.

Answer: (B)

Send-time optimization uses data about when recipients are likely to be receptive to schedule emails for those peak moments. It considers factors like time zones, industry patterns, and historical engagement to predict the best times and then sends accordingly. This approach is about timing, not randomness, and it relies on past behavior to improve future results. It isn’t primarily about testing subject lines, and it doesn’t ignore historical data. The other statements don’t fit because random sending ignores the predictive timing that drives higher engagement, and focusing only on subject lines misses the timing aspect.