CmdID

CmdID / PowerShell / Cmdlets / New

New-MailMessage

Use the New-MailMessage cmdlet to create an email message for the specified user mailbox and place the email message in the Drafts folder of the user's mailbox. Exchange PowerShell reference

From the Exchange PowerShell reference 6 parameters Its page in the reference

Opens CmdID with your command, read as PowerShell. It is read in your browser and sent nowhere.

Parameters

6 in the Exchange PowerShell reference
-BodyThe Body parameter specifies the content of the body section of the new email message.
-BodyFormatThe BodyFormat parameter specifies the format of the message body.
-Confirm, -cfThe Confirm switch specifies whether to show or hide the confirmation prompt.
-DomainControllerThe DomainController parameter specifies the domain controller that's used by this cmdlet to read data from or write data to Active Directory.
-SubjectThe Subject parameter specifies the content of the subject field of the new email message.
-WhatIf, -wiThe WhatIf switch shows what the command does without making any changes.