Use to focus your question on the use of an Outlook.Application object outside of Outlook's own VBA. Examples: PowerShell or VB Script referencing and manipulating an Outlook mailbox; Excel or MS Access building an Outlook Mail Item without leaving their own VBA environment, etc. Should be considered a sub-category and used for focusing a question.
Outlook is arguably the most common popular method used by programmers learning to send automated mail from an outside data storage. An Outlook MailItem can be quickly generated by using the mail settings already stored in the default Outlook mail profile outside of the native Outlook environment by introducing an instance of an Outlook.Application object and using that object to programmatically create and send email.
This presents unique problems, particularly in addressing parent/child relationships that are taken for granted in a native Outlook environment. Use this tag to focus attention on these issues when you are using an independent instance of the Outlook.Application from an outside calling process.
Typical examples of outside calling processes would include vbscript, powershell or even other Office applications such as excel or msaccess each of which can construct an instance of an outlook.application object and use it to not only create and send mail but wrangle the Contact, Calendar and other information stored an Outlook mailbox.