新建项目，引用MailKit和MimeKit NuGet包
using CommonTool.MailKit;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace ProjectDemo.ConsoleApp
{
class Program
{
static void Main(string[] args)
{
try
{
var ccList = new List<string>();
ccList.Add("*****@qq.com");
var recipients = new List<string>();
recipients.Add("*****@qq.com");
var mailBodyEntity = new MailBodyEntity()
{
Body = "这是一个测试邮件body内容<a href=‘http://www.baidu.com‘>123</a>",
Cc = ccList,
//MailBodyType = "html",
MailFiles = new List<MailFile>() {
new MailFile { MailFilePath = @"D:\文档\File\20180807165402.png", MailFileSubType = "png", MailFileType = "image" },
new MailFile { MailFilePath = @"D:\文档\File\TIM截图20180807165402.png", MailFileSubType = "png", MailFileType = "image" }
},
Recipients = recipients,
Sender = "邮件的发件人",
SenderAddress = "[email protected]",
Subject = "测试邮件是否可以发送的标题",
};
var sendServerConfiguration = new SendServerConfigurationEntity()
{
SenderPassword = "123456",
SmtpPort = 465,
IsSsl = true,
MailEncoding = "utf-8",
SenderAccount = "[email protected]",
SmtpHost = "smtp.qq.com",
};
var result=SeedMailHelper.SendMail(mailBodyEntity, sendServerConfiguration);
ReceiveEmailHelper.ReceiveEmail();
ReceiveEmailHelper.DownloadBodyParts();
Console.WriteLine("成功！");
Console.ReadLine();
}
catch (Exception ex)
{
Console.WriteLine(ex.ToString());
}
}
}
}
发送邮件
using MailKit;
using MailKit.Net.Smtp;
using MailKit.Security;
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace CommonTool.MailKit
{
/// <summary>
/// 发送邮件
/// </summary>
public static class SeedMailHelper
{
/// <summary>
/// 发送邮件
/// </summary>
/// <param name="mailBodyEntity">邮件基础信息</param>
/// <param name="sendServerConfiguration">发件人基础信息</param>
public static SendResultEntity SendMail(MailBodyEntity mailBodyEntity,
SendServerConfigurationEntity sendServerConfiguration)
{
if (mailBodyEntity == null)
{
throw new ArgumentNullException();
}
if (sendServerConfiguration == null)
{
throw new ArgumentNullException();
}
var sendResultEntity = new SendResultEntity();
using (var client = new SmtpClient(new ProtocolLogger(MailMessage.CreateMailLog())))
{
client.ServerCertificateValidationCallback = (s, c, h, e) => true;
Connection(mailBodyEntity, sendServerConfiguration, client, sendResultEntity);
if (sendResultEntity.ResultStatus == false)
{
return sendResultEntity;
}
SmtpClientBaseMessage(client);
// Note: since we don‘t have an OAuth2 token, disable
// the XOAUTH2 authentication mechanism.
client.AuthenticationMechanisms.Remove("XOAUTH2");
Authenticate(mailBodyEntity, sendServerConfiguration, client, sendResultEntity);
if (sendResultEntity.ResultStatus == false)
{
return sendResultEntity;
}
Send(mailBodyEntity, sendServerConfiguration, client, sendResultEntity);
if (sendResultEntity.ResultStatus == false)
{
return sendResultEntity;
}
client.Disconnect(true);
}
return sendResultEntity;
}
/// <summary>
/// 连接服务器
/// </summary>
/// <param name="mailBodyEntity">邮件内容</param>
/// <param name="sendServerConfiguration">发送配置</param>
/// <param name="client">客户端对象</param>
/// <param name="sendResultEntity">发送结果</param>
public static void Connection(MailBodyEntity mailBodyEntity, SendServerConfigurationEntity sendServerConfiguration,
SmtpClient client, SendResultEntity sendResultEntity)
{
try
{
client.Connect(sendServerConfiguration.SmtpHost, sendServerConfiguration.SmtpPort);
}
catch (SmtpCommandException ex)
{
sendResultEntity.ResultInformation = $"尝试连接时出错:{0}" + ex.Message;
sendResultEntity.ResultStatus = false;
}
catch (SmtpProtocolException ex)
{
sendResultEntity.ResultInformation = $"尝试连接时的协议错误:{0}" + ex.Message;
sendResultEntity.ResultStatus = false;
}
catch (Exception ex)
{
sendResultEntity.ResultInformation = $"服务器连接错误:{0}" + ex.Message;
sendResultEntity.ResultStatus = false;
}
}
/// <summary>
/// 账户认证
/// </summary>
/// <param name="mailBodyEntity">邮件内容</param>
/// <param name="sendServerConfiguration">发送配置</param>
/// <param name="client">客户端对象</param>
/// <param name="sendResultEntity">发送结果</param>
public static void Authenticate(MailBodyEntity mailBodyEntity, SendServerConfigurationEntity sendServerConfiguration,
SmtpClient client, SendResultEntity sendResultEntity)
{
try
{
client.Authenticate(sendServerConfiguration.SenderAccount, sendServerConfiguration.SenderPassword);
}
catch (AuthenticationException ex)
{
sendResultEntity.ResultInformation = $"无效的用户名或密码:{0}" + ex.Message;
sendResultEntity.ResultStatus = false;
}
catch (SmtpCommandException ex)
{
sendResultEntity.ResultInformation = $"尝试验证错误:{0}" + ex.Message;
sendResultEntity.ResultStatus = false;
}
catch (SmtpProtocolException ex)
{
sendResultEntity.ResultInformation = $"尝试验证时的协议错误:{0}" + ex.Message;
sendResultEntity.ResultStatus = false;
}
catch (Exception ex)
{
sendResultEntity.ResultInformation = $"账户认证错误:{0}" + ex.Message;
sendResultEntity.ResultStatus = false;
}
}
/// <summary>
/// 发送邮件
/// </summary>
/// <param name="mailBodyEntity">邮件内容</param>
/// <param name="sendServerConfiguration">发送配置</param>
/// <param name="client">客户端对象</param>
/// <param name="sendResultEntity">发送结果</param>
public static void Send(MailBodyEntity mailBodyEntity, SendServerConfigurationEntity sendServerConfiguration,
SmtpClient client, SendResultEntity sendResultEntity)
{
try
{
client.Send(MailMessage.AssemblyMailMessage(mailBodyEntity));
}
catch (SmtpCommandException ex)
{
switch (ex.ErrorCode)
{
case SmtpErrorCode.RecipientNotAccepted:
sendResultEntity.ResultInformation = $"收件人未被接受:{ex.Message}";
break;
case SmtpErrorCode.SenderNotAccepted:
sendResultEntity.ResultInformation = $"发件人未被接受:{ex.Message}";
break;
case SmtpErrorCode.MessageNotAccepted:
sendResultEntity.ResultInformation = $"消息未被接受:{ex.Message}";
break;
}
sendResultEntity.ResultStatus = false;
}
catch (SmtpProtocolException ex)
{
sendResultEntity.ResultInformation = $"发送消息时的协议错误:{ex.Message}";
sendResultEntity.ResultStatus = false;
}
catch (Exception ex)
{
sendResultEntity.ResultInformation = $"邮件接收失败:{ex.Message}";
sendResultEntity.ResultStatus = false;
}
}
/// <summary>
/// 获取SMTP基础信息
/// </summary>
/// <param name="client">客户端对象</param>
/// <returns></returns>
public static MailServerInformation SmtpClientBaseMessage(SmtpClient client)
{
var mailServerInformation = new MailServerInformation
{
Authentication = client.Capabilities.HasFlag(SmtpCapabilities.Authentication),
BinaryMime = client.Capabilities.HasFlag(SmtpCapabilities.BinaryMime),
Dsn = client.Capabilities.HasFlag(SmtpCapabilities.Dsn),
EightBitMime = client.Capabilities.HasFlag(SmtpCapabilities.EightBitMime),
Size = client.MaxSize
};
return mailServerInformation;
}
}
}
基础类
using MimeKit;
using MimeKit.Text;
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace CommonTool.MailKit
{
/// <summary>
/// 邮件信息
/// </summary>
public static class MailMessage
{
/// <summary>
/// 组装邮件文本/附件邮件信息
/// </summary>
/// <param name="mailBodyEntity">邮件消息实体</param>
/// <returns></returns>
public static MimeMessage AssemblyMailMessage(MailBodyEntity mailBodyEntity)
{
if (mailBodyEntity == null)
{
throw new ArgumentNullException(nameof(mailBodyEntity));
}
var message = new MimeMessage();
//设置邮件基本信息
SetMailBaseMessage(message, mailBodyEntity);
var multipart = new Multipart("mixed");
//插入文本消息
if (!string.IsNullOrEmpty(mailBodyEntity.Body))
{
var alternative = new MultipartAlternative
{
AssemblyMailTextMessage(mailBodyEntity.Body, mailBodyEntity.MailBodyType)
};
multipart.Add(alternative);
}
//插入附件
foreach (var mailFile in mailBodyEntity.MailFiles)
{
if (mailFile.MailFilePath != null && File.Exists(mailFile.MailFilePath))
{
var mimePart = AssemblyMailAttachmentMessage(mailFile.MailFileType, mailFile.MailFileSubType,
mailFile.MailFilePath);
multipart.Add(mimePart);
}
}
//组合邮件内容
message.Body = multipart;
return message;
}
/// <summary>
/// 设置邮件基础信息
/// </summary>
/// <param name="minMessag"></param>
/// <param name="mailBodyEntity"></param>
/// <returns></returns>
public static MimeMessage SetMailBaseMessage(MimeMessage minMessag, MailBodyEntity mailBodyEntity)
{
if (minMessag == null)
{
throw new ArgumentNullException();
}
if (mailBodyEntity == null)
{
throw new ArgumentNullException();
}
//插入发件人
minMessag.From.Add(new MailboxAddress(mailBodyEntity.Sender, mailBodyEntity.SenderAddress));
//插入收件人
if(mailBodyEntity.Recipients.Any())
{
foreach (var recipients in mailBodyEntity.Recipients)
{
minMessag.To.Add(new MailboxAddress(recipients));
}
}
//插入抄送人
if (mailBodyEntity.Cc!=null&&mailBodyEntity.Cc.Any())
{
foreach (var cC in mailBodyEntity.Cc)
{
minMessag.Cc.Add(new MailboxAddress(cC));
}
}
//插入密送人
if (mailBodyEntity.Bcc != null && mailBodyEntity.Bcc.Any())
{
foreach (var bcc in mailBodyEntity.Bcc)
{
minMessag.Bcc.Add(new MailboxAddress(bcc));
}
}
//插入主题
minMessag.Subject = mailBodyEntity.Subject;
return minMessag;
}
/// <summary>
/// 组装邮件文本信息
/// </summary>
/// <param name="mailBody">邮件内容</param>
/// <param name="textPartType">邮件类型(plain,html,rtf,xml)</param>
/// <returns></returns>
public static TextPart AssemblyMailTextMessage(string mailBody, TextFormat textPartType)
{
if (string.IsNullOrEmpty(mailBody))
{
throw new ArgumentNullException();
}
//var textBody = new TextPart(textPartType)
//{
// Text = mailBody,
//};
//处理查看源文件有乱码问题
var textBody = new TextPart(textPartType);
textBody.SetText(Encoding.Default, mailBody);
return textBody;
}
/// <summary>
/// 组装邮件附件信息
/// </summary>
/// <param name="fileAttachmentType">附件类型(image,application)</param>
/// <param name="fileAttachmentSubType">附件子类型 </param>
/// <param name="fileAttachmentPath">附件路径</param>
/// <returns></returns>
public static MimePart AssemblyMailAttachmentMessage(string fileAttachmentType, string fileAttachmentSubType, string fileAttachmentPath)
{
if (string.IsNullOrEmpty(fileAttachmentSubType))
{
throw new ArgumentNullException();
}
if (string.IsNullOrEmpty(fileAttachmentType))
{
throw new ArgumentNullException();
}
if (string.IsNullOrEmpty(fileAttachmentPath))
{
throw new ArgumentNullException();
}
var fileName = Path.GetFileName(fileAttachmentPath);
var attachment = new MimePart(fileAttachmentType, fileAttachmentSubType)
{
Content = new MimeContent(File.OpenRead(fileAttachmentPath)),
ContentDisposition = new ContentDisposition(ContentDisposition.Attachment),
ContentTransferEncoding = ContentEncoding.Base64,
//FileName = fileName,
};
//qq邮箱附件文件名中文乱码问题
//var charset = "GB18030";
attachment.ContentType.Parameters.Add(Encoding.Default, "name", fileName);
attachment.ContentDisposition.Parameters.Add(Encoding.Default, "filename", fileName);
//处理文件名过长
foreach (var param in attachment.ContentDisposition.Parameters)
param.EncodingMethod = ParameterEncodingMethod.Rfc2047;
foreach (var param in attachment.ContentType.Parameters)
param.EncodingMethod = ParameterEncodingMethod.Rfc2047;
return attachment;
}
/// <summary>
/// 创建邮件日志文件
/// </summary>
/// <returns></returns>
public static string CreateMailLog()
{
var logPath = AppDomain.CurrentDomain.BaseDirectory + "/DocumentLog/" +
Guid.NewGuid() + ".txt";
if (File.Exists(logPath)) return logPath;
var fs = File.Create(logPath);
fs.Close();
return logPath;
}
}
}
实体
using MimeKit.Text;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace CommonTool.MailKit
{
/// <summary>
/// 邮件内容实体
/// </summary>
public class MailBodyEntity
{
///// <summary>
///// 邮件文本内容
///// </summary>
//public string MailTextBody { get; set; }
/// <summary>
/// 邮件内容类型
/// </summary>
public TextFormat MailBodyType { get; set; } = TextFormat.Html;
/// <summary>
/// 邮件附件集合
/// </summary>
public List<MailFile> MailFiles { get; set; }
/// <summary>
/// 收件人
/// </summary>
public List<string> Recipients { get; set; }
/// <summary>
/// 抄送
/// </summary>
public List<string> Cc { get; set; }
/// <summary>
/// 密送
/// </summary>
public List<string> Bcc { get; set; }
/// <summary>
/// 发件人
/// </summary>
public string Sender { get; set; }
/// <summary>
/// 发件人地址
/// </summary>
public string SenderAddress { get; set; }
/// <summary>
/// 邮件主题
/// </summary>
public string Subject { get; set; }
/// <summary>
/// 邮件内容
/// </summary>
public string Body { get; set; }
}
public class MailFile
{
/// <summary>
/// 邮件附件文件类型 例如：图片 MailFileType="image"
/// </summary>
public string MailFileType { get; set; }
/// <summary>
/// 邮件附件文件子类型 例如：图片 MailFileSubType="png"
/// </summary>
public string MailFileSubType { get; set; }
/// <summary>
/// 邮件附件文件路径 例如：图片 [email protected]"C:\Files\123.png"
/// </summary>
public string MailFilePath { get; set; }
}
/// <summary>
/// 邮件服务器基础信息
/// </summary>
public class MailServerInformation
{
/// <summary>
/// SMTP服务器支持SASL机制类型
/// </summary>
public bool Authentication { get; set; }
/// <summary>
/// SMTP服务器对消息的大小
/// </summary>
public uint Size { get; set; }
/// <summary>
/// SMTP服务器支持传递状态通知
/// </summary>
public bool Dsn { get; set; }
/// <summary>
/// SMTP服务器支持Content-Transfer-Encoding
/// </summary>
public bool EightBitMime { get; set; }
/// <summary>
/// SMTP服务器支持Content-Transfer-Encoding
/// </summary>
public bool BinaryMime { get; set; }
/// <summary>
/// SMTP服务器在消息头中支持UTF-8
/// </summary>
public string UTF8 { get; set; }
}
/// <summary>
/// 邮件发送结果
/// </summary>
public class SendResultEntity
{
/// <summary>
/// 结果信息
/// </summary>
public string ResultInformation { get; set; } = "发送成功！";
/// <summary>
/// 结果状态
/// </summary>
public bool ResultStatus { get; set; } = true;
}
/// <summary>
/// 邮件发送服务器配置
/// </summary>
public class SendServerConfigurationEntity
{
/// <summary>
/// 邮箱SMTP服务器地址
/// </summary>
public string SmtpHost { get; set; }
/// <summary>
/// 邮箱SMTP服务器端口
/// </summary>
public int SmtpPort { get; set; }
/// <summary>
/// 是否启用IsSsl
/// </summary>
public bool IsSsl { get; set; }
/// <summary>
/// 邮件编码
/// </summary>
public string MailEncoding { get; set; }
/// <summary>
/// 邮箱账号
/// </summary>
public string SenderAccount { get; set; }
/// <summary>
/// 邮箱密码
/// </summary>
public string SenderPassword { get; set; }
}
}
接收
using MailKit;
using MailKit.Net.Imap;
using MailKit.Search;
using MailKit.Security;
using MimeKit;
using System;
using System.Collections.Generic;
using System.Configuration;
using System.Globalization;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace CommonTool.MailKit
{
/// <summary>
/// 跟投邮件服务API
/// </summary>
public static class ReceiveEmailHelper
{
/// <summary>
/// 设置发件人信息
/// </summary>
/// <returns></returns>
public static SendServerConfigurationEntity SetSendMessage()
{
var sendServerConfiguration = new SendServerConfigurationEntity
{
SmtpHost = ConfigurationManager.AppSettings["SmtpServer"],
SmtpPort = int.Parse(ConfigurationManager.AppSettings["SmtpPort"]),
IsSsl = Convert.ToBoolean(ConfigurationManager.AppSettings["IsSsl"]),
MailEncoding = ConfigurationManager.AppSettings["MailEncoding"],
SenderAccount = ConfigurationManager.AppSettings["SenderAccount"],
SenderPassword = ConfigurationManager.AppSettings["SenderPassword"]
};
return sendServerConfiguration;
}
/// <summary>
/// 接收邮件
/// </summary>
public static void ReceiveEmail()
{
var sendServerConfiguration = SetSendMessage();
if (sendServerConfiguration == null)
{
throw new ArgumentNullException();
}
using (var client = new ImapClient(new ProtocolLogger(MailMessage.CreateMailLog())))
{
client.Connect(sendServerConfiguration.SmtpHost, sendServerConfiguration.SmtpPort,
SecureSocketOptions.SslOnConnect);
client.Authenticate(sendServerConfiguration.SenderAccount, sendServerConfiguration.SenderPassword);
client.Inbox.Open(FolderAccess.ReadOnly);
var uids = client.Inbox.Search(SearchQuery.All);
foreach (var uid in uids)
{
var message = client.Inbox.GetMessage(uid);
message.WriteTo($"{uid}.eml");
}
client.Disconnect(true);
}
}
/// <summary>
/// 下载邮件内容
/// </summary>
public static void DownloadBodyParts()
{
var sendServerConfiguration = SetSendMessage();
using (var client = new ImapClient())
{
client.Connect(sendServerConfiguration.SmtpHost, sendServerConfiguration.SmtpPort,
SecureSocketOptions.SslOnConnect);
client.Authenticate(sendServerConfiguration.SenderAccount, sendServerConfiguration.SenderPassword);
client.Inbox.Open(FolderAccess.ReadOnly);
// 搜索Subject标题包含“MimeKit”或“MailKit”的邮件
var query = SearchQuery.SubjectContains("MimeKit").Or(SearchQuery.SubjectContains("MailKit"));
var uids = client.Inbox.Search(query);
// 获取搜索结果的摘要信息（我们需要UID和BODYSTRUCTURE每条消息，以便我们可以提取文本正文和附件）
var items = client.Inbox.Fetch(uids, MessageSummaryItems.UniqueId | MessageSummaryItems.BodyStructure);
foreach (var item in items)
{
// 确定一个目录来保存内容
var directory = Path.Combine(AppDomain.CurrentDomain.BaseDirectory + "/MailBody", item.UniqueId.ToString());
Directory.CreateDirectory(directory);
// IMessageSummary.TextBody是一个便利的属性，可以为我们找到“文本/纯文本”的正文部分
var bodyPart = item.TextBody;
// 下载‘text / plain‘正文部分
var body = (TextPart)client.Inbox.GetBodyPart(item.UniqueId, bodyPart);
// TextPart.Text是一个便利的属性，它解码内容并将结果转换为我们的字符串
var text = body.Text;
File.WriteAllText(Path.Combine(directory, "body.txt"), text);
// 现在遍历所有附件并将其保存到磁盘
foreach (var attachment in item.Attachments)
{
// 像我们对内容所做的那样下载附件
var entity = client.Inbox.GetBodyPart(item.UniqueId, attachment);
// 附件可以是message / rfc822部件或常规MIME部件
var messagePart = entity as MessagePart;
if (messagePart != null)
{
var rfc822 = messagePart;
var path = Path.Combine(directory, attachment.PartSpecifier + ".eml");
rfc822.Message.WriteTo(path);
}
else
{
var part = (MimePart)entity;
// 注意：这可能是空的，但大多数会指定一个文件名
var fileName = part.FileName;
var path = Path.Combine(directory, fileName);
// decode and save the content to a file
using (var stream = File.Create(path))
part.Content.DecodeTo(stream);
}
}
}
client.Disconnect(true);
}
}
}
}
https://blog.csdn.net/sd7o95o/article/details/79493045
原文地址：https://www.cnblogs.com/sanday/p/9482024.html
时间： 2024-11-07 21:29:12