We don't recommend that you use the SmtpClient class for new development because SmtpClient doesn't support many modern protocols. Use MailKit or other libraries instead. For more information, see SmtpClient shouldn't be used on GitHub. The classes shown in the following table are used to construct email messages that can be sent using SmtpClient.
To construct and send an email message by using SmtpClient , you must specify the following information:. The SMTP host server that you use to send email. See the Host and Port properties. Credentials for authentication, if required by the SMTP server. See the Credentials property.
The email address of the sender. See the Send and SendAsync methods that take a from parameter. Also see the MailMessage. From property. The email address or addresses of the recipients. See the Send and SendAsync methods that take a recipient parameter. To property. The message content. See the Send and SendAsync methods that take a body parameter.
Body property. To include an attachment with an email message, first create the attachment by using the Attachment class, and then add it to the message by using the MailMessage. Attachments property. Depending on the email reader used by the recipients and the file type of the attachment, some recipients might not be able to read the attachment.
For clients that cannot display the attachment in its original form, you can specify alternate views by using the MailMessage. AlternateViews property. NET Framework, you can use the application or machine configuration files to specify default host, port, and credentials values for all SmtpClient objects.
NET Core does not support setting defaults. As a workaround, you must set the relevant properties on SmtpClient directly. To send the email message and block while waiting for the email to be transmitted to the SMTP server, use one of the synchronous Send methods.
To allow your program's main thread to continue executing while the email is transmitted, use one of the asynchronous SendAsync methods. The SendCompleted event is raised when a SendAsync operation completes.
The SendCompletedEventHandler delegate must reference a callback method that handles notification of SendCompleted events. Learn more. Skip to content. Here are 16 public repositories matching this topic Language: All Filter by language. Sort options. Star 2. Updated Jan 13, C. Star Open is the variable firstwhen used uninitialized in tcpto. If one were to compile the qmail code with -Wall -Werror, the following error is produced:.
Open Add manpage for qmail-todo. Updated Dec 26, C. Updated May 20, C. If you have multiple email accounts and receive dozens of emails every single day, you need nothing less than the best email client for Windows 10 and Windows Clean Email Take control of your mailbox 4.
Most email clients today support multiple email services, including Gmail , Yahoo , Yandex, Outlook, and self-hosted business email systems, and they often make it possible to consolidate emails from all connected addresses into a single, unified view.
Some email clients come only with the most essential features, while others support things like encryption, contact management, out-of-office responses, phishing filtering, image blocking, and others.
0コメント