Global campaigns require a more nuanced approach. One effective method is to create a staggered sending schedule. For example, if you have a global audience, you could segment them into major regions like the Americas, Europe, and Asia, and schedule your emails to be sent at optimal times for each region.
Another approach is to use the "time travel" feature available in some email marketing platforms. This feature sends emails at the same local time for all recipients, regardless of their time zone.