Set up Outlook to deliver email immediately after you click Send, instead of using a schedule to send email. The key is setting the right options. The instructions in this article apply to Outlook 2019, 2016, 2013, and 2010, and to Outlook for Microsoft 365.
How do I change the time for automatic send and receive in Outlook? | How can I receive a message immediately in Outlook?
If Outlook waits to send your email on a schedule, change the settings so that emails are sent immediately when you click the Send button.
In Outlook Options, select Advanced.
Go to the Sending and Receiving section.
