Your Global admin or Exchange Online admin can configure tenant-level settings in the Microsoft Admin Center. If you qualify to use the feature, schedule send suggestions are turned on by default. If you fall into one of these categories, but you turn off the feature, you don't get any schedule send suggestions.

If you have an Insights by MyAnalytics service plan, you get up to three daily schedule send suggestions. If you have either a Viva Insights subscription or MyAnalytics (Full) service plan, you get an unlimited number of schedule send suggestions for delaying email delivery to your coworkers. Suggestions appear when you're composing an email in Outlook at certain times, and they propose send times that align with your colleagues' working hours. Schedule send suggestions also help you maintain the flexibility to work when you want without putting the burden of your schedule on others. With schedule send suggestions, you can help minimize email disruptions to your colleagues outside their working hours or when they’re away from work.

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