1、安裝Nuget包MailKit，參考命名空間，
using MailKit.Net.Smtp; using MimeKit;
注意：參考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";
注意：Admin,User分別對應發送接收郵箱前綴
3、撰寫內容
BodyBuilder bodyBuilder = new BodyBuilder(); bodyBuilder.HtmlBody = "<h1>Hello World!</h1>"; bodyBuilder.TextBody = "Hello World!";
message.Body = bodyBuilder.ToMessageBody();
注意：也可以自定義模板，插入圖片等等，
4、連接SMTP服務器發送郵件
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();
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標籤：.NET Core