Select this checkbox if you want to enable sending an Office 365 out of office message only to specified contacts.
Select this checkbox to send out of office notifications to senders who have email addresses outside your organization. Send replies outside your organization.I will get back to you as soon as possible. This is the Office 365 out of office message. Write the text that will be sent to senders when the out of office Outlook 365 rule is enabled. Send automatic replies inside your organization Decline and cancel my meetings during this period.
This blog post explains how to set out of office in Outlook 365 and Outlook 2016. In that case, you use such a notification to inform senders to your old email address about your new email address. An out of office notification can be used when you migrate from one email address to another. Both editions of Outlook – Outlook Web App and the standalone Outlook application – allow you to configure out of office notifications and automatically send a message to a sender if you cannot reply. Besides incoming mail, you can configure other custom rules. For example, it can be configured to save spam messages in the Junk Email folder. Outlook can sort incoming email messages to different email folders according to configured rules. After releasing Office 365, which is a suite of cloud-based Microsoft Office apps and services, it became possible to use Outlook as a web application (Outlook Online) with Microsoft mail servers only.
Microsoft Office Outlook is a powerful email client that can work with different email servers and provides many automation options. By Michael Bose How to Configure an Out of Office Notification in Office 365