pub async fn fetch_message_headers(
http: &Client,
base_url: &str,
access_token: &str,
message_id: &str,
) -> Result<Vec<(String, String)>, ClientError>Expand description
GET /me/messages/{id}?$select=internetMessageHeaders: fetch just the
raw RFC 5322 headers for a message. Used by pidge mail unsubscribe
to locate List-Unsubscribe / List-Unsubscribe-Post.