如何在收到新邮件时让office365的事件监听器

Question

我已将邮箱从交换服务器迁移到 Office 365。

我已经编写了使用凭据连接到Office 365的代码，因此我能够阅读收件箱中的所有电子邮件。请找到以下代码

 public async System.Threading.Tasks.Task test()
        {
            var pcaOptions = new PublicClientApplicationOptions
            {
                ClientId = ConfigurationManager.AppSettings["appId"],
                TenantId = ConfigurationManager.AppSettings["tenantId"],
            };

            var pca = PublicClientApplicationBuilder
                .CreateWithApplicationOptions(pcaOptions).Build();

            var ewsScopes = new string[] { "https://outlook.office.com/EWS.AccessAsUser.All" };

            try
            {
                string password = "test";
                SecureString sec_pass = new SecureString();
                Array.ForEach(password.ToArray(), sec_pass.AppendChar);
                sec_pass.MakeReadOnly();
                // Make the interactive token request
                var authResult = await pca.AcquireTokenByUsernamePassword(ewsScopes, "[e-mail]", sec_pass).ExecuteAsync();
                //var authResult = await pca.AcquireTokenInteractive(ewsScopes).ExecuteAsync();
                // Configure the ExchangeService with the access token
                var ewsClient = new ExchangeService();
                //ewsClient.ImpersonatedUserId = new ImpersonatedUserId(ConnectingIdType.SmtpAddress, "[e-mail]");
                ewsClient.Url = new Uri("https://outlook.office365.com/EWS/Exchange.asmx");
                ewsClient.Credentials = new OAuthCredentials(authResult.AccessToken);

                FindItemsResults<Item> result = ewsClient.FindItems(WellKnownFolderName.Inbox, new ItemView(10));
                foreach (Item item in result)
                {
                    EmailMessage message = EmailMessage.Bind(ewsClient, item.Id);
                    String body = message.ConversationTopic;
                    String from = message.From.Address.ToString();

                }
                // Make an EWS call
                var folders = ewsClient.FindFolders(WellKnownFolderName.MsgFolderRoot, new FolderView(10));
                foreach (var folder in folders)
                {
                    Console.WriteLine($"Folder: {folder.DisplayName}");
                }
            }
            catch (MsalException ex)
            {
                Console.WriteLine($"Error acquiring access token: {ex.ToString()}");
            }
            catch (Exception ex)
            {
                Console.WriteLine($"Error: {ex.ToString()}");
            }
        }

现在，我希望添加一个侦听器，该侦听器可以在收件箱中收到新邮件时运行此代码。有人可以建议我如何做到这一点。

Answer 1

在EWS https://learn . Microsoft . com/en-us/exchange/client-developer/exchange-web-services/notification-subscriptions-mailbox-events-and-EWS-in-exchange中，EWS流或推送通知是实现这一点的一种方式。更好的方法是在Graph API中使用Webooks，而不要使用EWS https://learn . Microsoft . com/en-us/Graph/API/resources/web hooks？view=graph-rest-1.0(除非您需要代码运行OnPrem)。我建议的另一件事是看看Power Automate(以前的Flow ),它也有能力在新邮件收据上触发大量动作。