Retrieves the message summary information of all messages using the specified criteria.

Specify the metadata=true query string parameter to additionally include the attachments, expirationDate, securityEnvelope, and tracking properties.

HTTP Status Code 400 Error Codes (error property):

InvalidPageNumber - An invalid page number was provided. Valid page numbers are > 0.

InvalidPageSize - An invalid page size was provided. Valid page sizes are > 0.

InvalidFolderId - An invalid folder id was provided. Valid folder ids are > 0.
Note: If the UnreadOnly=true query string parameter is provided, only inbox folder types can be provided.

HTTP Status Code 401 Error Codes (error property):

Unauthorized - An Authorization token was not provided and is required.

AccessTokenInvalid - The access token is expired or invalid.