public async Task SendEmailAsync(
SmtpOptions smtpOptions,
string to,
string from,
string subject,
string plainTextMessage,
string htmlMessage,
string replyTo = null,
Importance importance = Importance.Normal
)
{
if (string.IsNullOrWhiteSpace(to))
{
throw new ArgumentException("no to address provided");
}
if (string.IsNullOrWhiteSpace(from))
{
throw new ArgumentException("no from address provided");
}
if (string.IsNullOrWhiteSpace(subject))
{
throw new ArgumentException("no subject provided");
}
var hasPlainText = !string.IsNullOrWhiteSpace(plainTextMessage);
var hasHtml = !string.IsNullOrWhiteSpace(htmlMessage);
if (!hasPlainText && !hasHtml)
{
throw new ArgumentException("no message provided");
}
var m = new MimeMessage();
m.From.Add(new MailboxAddress("", from));
if (!string.IsNullOrWhiteSpace(replyTo))
{
m.ReplyTo.Add(new MailboxAddress("", replyTo));
}
m.To.Add(new MailboxAddress("", to));
m.Subject = subject;
m.Importance = GetMessageImportance(importance);
//Header h = new Header(HeaderId.Precedence, "Bulk");
//m.Headers.Add()
BodyBuilder bodyBuilder = new BodyBuilder();
if (hasPlainText)
{
bodyBuilder.TextBody = plainTextMessage;
}
if (hasHtml)
{
bodyBuilder.HtmlBody = htmlMessage;
}
m.Body = bodyBuilder.ToMessageBody();
try
{
using (var client = new SmtpClient())
{
await client.ConnectAsync(
smtpOptions.Server,
smtpOptions.Port,
smtpOptions.UseSsl)
.ConfigureAwait(false);
// Note: since we don't have an OAuth2 token, disable
// the XOAUTH2 authentication mechanism.
client.AuthenticationMechanisms.Remove("XOAUTH2");
// Note: only needed if the SMTP server requires authentication
if (smtpOptions.RequiresAuthentication)
{
await client.AuthenticateAsync(smtpOptions.User, smtpOptions.Password)
.ConfigureAwait(false);
}
await client.SendAsync(m).ConfigureAwait(false);
await client.DisconnectAsync(true).ConfigureAwait(false);
}
}
catch (Exception ex)
{
throw ex;
}
}
public async Task SendMultipleEmailAsync(
SmtpOptions smtpOptions,
string toCsv,
string from,
string subject,
string plainTextMessage,
string htmlMessage,
string replyTo = null,
Importance importance = Importance.Normal
)
{
if (string.IsNullOrWhiteSpace(toCsv))
{
throw new ArgumentException("no to addresses provided");
}
if (string.IsNullOrWhiteSpace(from))
{
throw new ArgumentException("no from address provided");
}
if (string.IsNullOrWhiteSpace(subject))
{
throw new ArgumentException("no subject provided");
}
var hasPlainText = !string.IsNullOrWhiteSpace(plainTextMessage);
var hasHtml = !string.IsNullOrWhiteSpace(htmlMessage);
if (!hasPlainText && !hasHtml)
{
throw new ArgumentException("no message provided");
}
var m = new MimeMessage();
m.From.Add(new MailboxAddress("", from));
if (!string.IsNullOrWhiteSpace(replyTo))
{
m.ReplyTo.Add(new MailboxAddress("", replyTo));
}
if (toCsv.Contains(","))
{
string[] adrs = toCsv.Split(',');
foreach (string item in adrs)
{
if (!string.IsNullOrEmpty(item))
{
m.To.Add(new MailboxAddress("", item));
}
}
}
else
{
m.To.Add(new MailboxAddress("", toCsv));
}
m.Subject = subject;
m.Importance = GetMessageImportance(importance);
BodyBuilder bodyBuilder = new BodyBuilder();
if (hasPlainText)
{
bodyBuilder.TextBody = plainTextMessage;
}
if (hasHtml)
{
bodyBuilder.HtmlBody = htmlMessage;
}
m.Body = bodyBuilder.ToMessageBody();
using (var client = new SmtpClient())
{
await client.ConnectAsync(
smtpOptions.Server,
smtpOptions.Port,
smtpOptions.UseSsl).ConfigureAwait(false);
// Note: since we don't have an OAuth2 token, disable
// the XOAUTH2 authentication mechanism.
client.AuthenticationMechanisms.Remove("XOAUTH2");
// Note: only needed if the SMTP server requires authentication
if (smtpOptions.RequiresAuthentication)
{
await client.AuthenticateAsync(
smtpOptions.User,
smtpOptions.Password).ConfigureAwait(false);
}
await client.SendAsync(m).ConfigureAwait(false);
await client.DisconnectAsync(true).ConfigureAwait(false);
}
}
