/// <summary>
/// 发送邮件
/// </summary>
public static void Send(SmtpConfig smtpConfig, MailSendingOption option)
{
if (smtpConfig == null)
{
throw new ArgumentNullException(nameof(smtpConfig));
}
if (string.IsNullOrWhiteSpace(smtpConfig.Server))
{
throw new ArgumentException("未设置SMTP Server");
}
if (string.IsNullOrWhiteSpace(smtpConfig.UserName))
{
throw new ArgumentException("未设置SMTP UserName");
}
if (option == null)
{
throw new ArgumentNullException(nameof(option));
}
if (string.IsNullOrWhiteSpace(option.MailTo))
{
throw new ArgumentException("未设置收件人");
}
if (string.IsNullOrWhiteSpace(option.Subject))
{
throw new ArgumentException("未设置邮件主题");
}
var from = option.From.TrimToNull() ?? smtpConfig.From.TrimToNull() ?? smtpConfig.UserName.TrimToNull() ?? throw new ArgumentNullException("未设置发件人");
var separator = new[] { ',', ';' };
var message = new MimeMessage();
message.From.Add(new MailboxAddress(string.Empty, from));
message.To.Add(new MailboxAddress(string.Empty, option.MailTo.Trim()));
message.Subject = option.Subject;
if (!string.IsNullOrWhiteSpace(option.CC))
{
var addrArr = option.CC.Split(separator, StringSplitOptions.RemoveEmptyEntries)
.Select(n => new MailboxAddress(string.Empty, n.Trim()));
message.Cc.AddRange(addrArr);
}
if (!string.IsNullOrWhiteSpace(option.BCC))
{
var addrArr = option.BCC.Split(separator, StringSplitOptions.RemoveEmptyEntries)
.Select(n => new MailboxAddress(string.Empty, n.Trim()));
message.Bcc.AddRange(addrArr);
}
if (option.AdditionalHeaders != null)
{
}
if (!string.IsNullOrWhiteSpace(option.HeaderEncoding))
{
message.Headers.Add(HeaderId.Encoding, option.HeaderEncoding.Trim());
}
if (!string.IsNullOrWhiteSpace(option.Priority) &&
Enum.TryParse(option.Priority.Trim(), out MessagePriority prri))
{
message.Priority = prri;
}
if (!string.IsNullOrWhiteSpace(option.ReplyTo))
{
message.ReplyTo.Add(new MailboxAddress(string.Empty, option.ReplyTo.Trim()));
}
var builder = new BodyBuilder();
if (option.IsBodyHtml)
{
builder.HtmlBody = option.Body;
}
else
{
builder.TextBody = option.Body;
}
if (option.FilesToAttach != null && option.FilesToAttach.Any(n => !string.IsNullOrWhiteSpace(n)))
{
var attaches = option.FilesToAttach.Where(n => !string.IsNullOrWhiteSpace(n)).ToArray();
foreach (var attach in attaches)
{
builder.Attachments.Add(attach);
}
if (smtpConfig.ZipAttach)
{
using (var zipStream = new MemoryStream())
{
using (var archive = new ZipArchive(zipStream, ZipArchiveMode.Update))
{
foreach (var attach in attaches)
{
var fileInfo = new FileInfo(attach);
var entry = archive.CreateEntry(fileInfo.Name);
using (var stream = entry.Open())
{
var bytes = File.ReadAllBytes(fileInfo.FullName);
stream.Write(bytes, 0, bytes.Length);
}
}
}
builder.Attachments.Add(option.Subject + ".zip", zipStream.ToArray());
}
}
}
message.Body = builder.ToMessageBody();
if (!string.IsNullOrWhiteSpace(option.ContentEncoding))
{
message.Body.Headers.Add(HeaderId.Encoding, option.ContentEncoding.Trim());
}
//以outlook名义发送邮件，不会被当作垃圾邮件
message.Headers.Add("X-Priority", "3");
message.Headers.Add("X-MSMail-Priority", "Normal");
message.Headers.Add("X-Mailer", "Microsoft Outlook Express 6.00.2900.2869");
message.Headers.Add("X-MimeOLE", "Produced By Microsoft MimeOLE V6.00.2900.2869");
message.Headers.Add("ReturnReceipt", "1");
if (smtpConfig.Receipt)
{
message.Headers.Add("Disposition-Notification-To", from);
}
using (var client = new SmtpClient())
{
// For demo-purposes, accept all SSL certificates (in case the server supports STARTTLS)
client.ServerCertificateValidationCallback = (s, c, h, e) => true;
client.Connect(smtpConfig.Server, smtpConfig.Port,
smtpConfig.EnableSsl ? SecureSocketOptions.SslOnConnect : SecureSocketOptions.None);
// Note: since we don't have an OAuth2 token, disable
// the XOAUTH2 authentication mechanism.
client.AuthenticationMechanisms.Remove("XOAUTH2");
if (!string.IsNullOrWhiteSpace(smtpConfig.Password))
{
// Note: only needed if the SMTP server requires authentication
client.Authenticate(new Credentials(smtpConfig));
}
client.Send(message);
client.Disconnect(true);
}
}
public Credentials(SmtpConfig config)
{
_config = config ?? throw new ArgumentNullException(nameof(config));
}
