Send time planner
Get two windows worth testing. Your list’s opens and clicks matter more than a general rule.
These are starting windows, not a best time. Subscriber behavior is the real guide. Send the same kind of email in two windows and keep the one people answer.
Tuesday–Thursday, 10:00–11:30am
A readable weekday morning, after the Monday rush.
Tuesday–Thursday, 4:00–6:00pm
After work and before dinner. Test this against the morning window with the same kind of email.
Test this first. Send the next real email in Tuesday–Thursday, 10:00–11:30am, then repeat a similar email in the other window. Keep the one your list answers.
Times are local to America/Chicago. This planner does not convert clocks or store what you entered.