How to test send-time optimization by region?

Send time optimization by region starts with time zone segmentation. A 9am send in New York is 2pm in London and 11pm in Tokyo. Sending at the same absolute time for global audiences creates mismatched delivery windows.

Segment by time zone and schedule sends to land during optimal hours for each region. Most ESPs support send time intelligence or timezone based sending that automatically adjusts delivery.

Test different send windows with A/B splits. For each region, try morning, midday, and evening sends. Measure open rates, click rates, and conversion to identify when engagement peaks.

Use AI driven send time optimization tools like Braze Intelligent Timing or Klaviyo Smart Send Time. These analyze individual engagement history and deliver emails when each subscriber is most likely to open.

Account for regional work patterns. B2B emails might perform best during business hours, while B2C emails see higher engagement in evenings and weekends. Test by vertical and audience type.

Send time is the tide that carries your message to shore. Arrive when the harbor is ready to receive you.