You can compose a Workspace Webmail message and schedule to send it at a specific time.
For example, you decide to have a limited-time discount on one of your products. You want to send an email message about the discount to your customers who have said they would like to receive email messages from your company. The sale starts Sunday, and today is Monday. You can compose the email message now and specify to have it sent on Friday, two days before the sale begins.