1   public class EmailRequest

 2     {

 3         /// <summary>

 4         /// 邮件的发送者的邮箱

 5         /// </summary>

 6         [Required] public string From { get; set; }

 7         /// <summary>

 8         /// 邮件的发送者的邮箱登录密码或者授权码 这里用邮箱密码还是授权码视情况而定

 9         /// </summary>

10         [Required] public string Password { get; set; }

11         /// <summary>

12         /// Smtp服务器

13         /// </summary>

14         [Required] public string SmtpServer { get; set; }

15         /// <summary>

16         /// Smtp服务器的端口

17         /// </summary>

18         [Required] public int SmtpPort { get; set; }

19         /// <summary>

20         /// 邮件发送者的昵称

21         /// </summary>

22         [Required] public string Nickname { get; set; }

23         /// <summary>

24         /// 邮件的接收者 的邮箱

25         /// </summary>

26         [Required]

27         public string ToAddress { get; set; }

28         /// <summary>

29         /// 邮件的文本消息 非必须

30         /// </summary>

31

32         public string TextBody { get; set; }

33         /// <summary>

34         /// 邮件中可以放html 请在这里传入组织好的html

35         /// </summary>

36         public string HtmlBody { get; set; }

37         /// <summary>

38         /// 邮件的主题

39         /// </summary>

40         [Required]

41         public string Subject { get; set; }

42         /// <summary>

43         /// 邮件的附件 数据格式是Attachment的集合  一个Attachment表示一个文件，可以添加多个文件

44         /// </summary>

45         public IEnumerable<Attachment> Attachments { get; set; }

46     }

 1 /// <summary>

 2     /// 邮件附件的定义

 3     /// </summary>

 4     public class Attachment

 5     {

 6         /// <summary>

 7         /// 附件的文件名 包含文件的扩展名，如 商品导入.xlsx。 方便如qq邮箱下载附件的时候 自动附上xlsx扩展名

 8         /// </summary>

 9         public string FileName { get; set; }

10         /// <summary>

11         /// 文件的流

12         /// </summary>

13         public Stream File { get; set; }

14

15

16     }

1 public interface IAppEmailService

2         {

3         /// <summary>

4         /// 发送简单 带有附件的邮件

5         /// </summary>

6         /// <param name="emailRequest"></param>

7         /// <returns></returns>

8             Task SendAsync(EmailRequest emailRequest);

9         }

 1 /// <inheritdoc />

 2         public async Task SendAsync(EmailRequest emailRequest)

 3         {

 4             var message = new MimeMessage();

 5             message.To.Add(new MailboxAddress(emailRequest.ToAddress, emailRequest.ToAddress));//收件人

 6             message.From.Add(new MailboxAddress(emailRequest.Nickname, emailRequest.From));//发件人

 7             message.Subject = emailRequest.Subject;

 8

 9             var builder = new BodyBuilder { TextBody = emailRequest.TextBody, HtmlBody = emailRequest.HtmlBody }; //

10

11

12             if (emailRequest.Attachments.Any())

13             {

14                 foreach (var attachment in emailRequest.Attachments)

15                 {

16                     await builder.Attachments.AddAsync(attachment.FileName,attachment.File);

17                 }

18             }

19

20

21             message.Body = builder.ToMessageBody();

22

23

24

25             using (var client = new MailKit.Net.Smtp.SmtpClient())

26             {

27                 // client.MessageSent += (sender, args) => {  };

28                 // client.ServerCertificateValidationCallback = (s, c, h, e) => true;

29                     await client.ConnectAsync(emailRequest.SmtpServer, emailRequest.SmtpPort,SecureSocketOptions.Auto);

30

31                 // Note: since we don't have an OAuth2 token, disable

32                 // the XOAUTH2 authentication mechanism.

33                 client.AuthenticationMechanisms.Remove("XOAUTH2");

34

35                 // Note: only needed if the SMTP server requires authentication

36                 await client.AuthenticateAsync(emailRequest.From, emailRequest.Password);

37

38                 await client.SendAsync(message);

39                 await client.DisconnectAsync(true);

40             }

41         }