IQVIA’s Send Time Optimization (STO) helps healthcare marketers improve email engagement. Using algorithms and historical engagement data, STO predicts the best day and time to reach each healthcare professional, tailoring delivery at the individual level. Unlike standard email blasts, STO personalizes timing, boosting open rates—on average twice as high as traditional campaigns. The fact sheet highlights strategic STO (SSTO), which forecasts engagement patterns for recipients lacking historical data. This personalization reduces wasted effort, enhances campaign ROI, and ensures the “right message, right time, right professional.” STO allows marketers to maximize impact by aligning outreach with HCP habits.

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