.Net Core Send Email

1、安裝Nuget包MailKit，引用命名空間。

using MailKit.Net.Smtp;
using MimeKit;

註意：引用MailKit對應最新版本

2、定義收發地址和標題

MimeMessage message = new MimeMessage();
MailboxAddress from = new MailboxAddress("Admin","[email protected]");
message.From.Add(from);
MailboxAddress to = new MailboxAddress("User", "[email protected]");
message.To.Add(to);
message.Subject = "This is email subject";

註意：Admin,User分別對應發送接收郵箱首碼

3、編寫內容

BodyBuilder bodyBuilder = new BodyBuilder();
bodyBuilder.HtmlBody = "<h1>Hello World!</h1>";
bodyBuilder.TextBody = "Hello World!";
message.Body = bodyBuilder.ToMessageBody();

註意：也可以自定義模板，插入圖片等等。

4、連接SMTP伺服器發送郵件

SmtpClient client = new SmtpClient();
client.Connect("smtp_address_here", port_here, true);  //例如：smtp.exmail.qq.com，465
client.Authenticate("[email protected]", "password")； //發送郵件的賬戶密碼
client.Send(message);
client.Disconnect(true);
client.Dispose();