The Office365 table Messages.

Table Specific Information

Select

You can retrieve all from Messages, specify a Message (Id), UserId, or ParentFolderId, or you can filter results by a certain column:

SELECT * FROM Messages WHERE Id = 'MyMessageId'

SELECT * FROM Messages WHERE UserId = 'MyUserId'

SELECT * FROM Messages WHERE ParentFolderId = 'MyParentfolderId' 
SELECT * FROM Messages WHERE ParentFolderId = 'Drafts'
SELECT DisplayName, Id FROM Users WHERE DisplayName LIKE 'John%'

Insert

After the INSERT, a new Message will be created in the User's Drafts folder.

INSERT INTO Messages (Subject, Body_Content, UserId) VALUES ('New test Email', 'Test Email created.', 'User Id goes here')

Note: To send the mail, see SendMail.

Update

To update a message:

UPDATE Messages SET Subject = 'Email Updated', Body_Content = 'New Body Content' WHERE Id = 'MyMessageId'

Preserving HTML Formatting

If you are executing an INSERT or UPDATE and your message has HTML in its body_content, you must set body_contentType to 'html'.

UPDATE Messages SET body_content = '<my html document>', body_contentType = 'html'

If you don't set body_contentType to 'html', the HTML content of the message (such as elements and tags) will be visible in the body of the resulting email as plaintext instead of being processed as HTML.

Known Issues

This table may return an inconsistent number of results. That is, it can return a number of rows for one query and a different numbers of rows in subsequent queries, even when your messages remain unchanged. This means that some messages may be missing when querying this table.

This is a known bug in the Microsoft Graph API.

There is a workaround that allows the cmdlet to retrieve all messages, but it comes with a tradeoff: 'events' and 'contacts' data will be returned along with 'messages' data. When using this workaround, you must use filtering to distinguish between message and non-message rows.

To enable this workaround, add "ClientSidePaging=true;" (without quotation marks) in the value of the Other connection property.

Columns