MailKit和MimeKit 收发邮件
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 = "111111@qq.com", 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 = "11111@qq.com", 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 MailFilePath=@"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
