Mail Server Settings (edit)

• Outlook 2010
• Outlook 2013
• Tài khoản email doanh nghiệp của Nhân Hòa (UMail)
• SSL 465 smtp.umailsmtp.com
• SSL 993 imap.umailsmtp.com

Admin: https://admin.umail.vn/

Hòm thư : https://mail.umail.vn/

UMAIL | Dịch vụ email theo tên miền riêng dành cho doanh nghiệp từ Nhân Hòa

Hướng dẫn cài đặt Umail trên Outlook Office365 - Umail | Trang hỗ trợ dành cho Umail

Hướng dẫn cài đặt Email vào Microsoft Outlook (nhanhoa.com)

Hướng dẫn gửi email bằng C# qua giao thức SMTP - Tin Học Sóc Trăng (tinhocsoctrang.com) (HAY HAY HAY)

System.Net.Mail.SmtpException: The operation has timed out. | The ASP.NET Forums (HAY HAY HAY)

How to fix (the operation has timed out) ... | DaniWeb (HAY HAY HAY)

Hướng dẫn cài đặt Umail trên Outlook 2013 - Umail | Trang hỗ trợ dành cho Umail (HAY HAY HAY)

Hướng dẫn trỏ bản ghi Umail.vn - Thư viện tài liệu tại Nhân Hòa - Nhan Hoa Software Company

Một số thư viện hay dùng:

• SmtpClient Class (System.Net.Mail) | Microsoft Docs
• MailKit
• SendGrid

.net - Sending Email Using System.Net.Mail in C# - Stack Overflow

How to send emails from C#/.NET - The definitive tutorial | elmah.io

c# — Cách gửi email đến nhiều địa chỉ bằng System.Net.Mail (it-swarm-vi.com)

v2 API C# Code Example - Twilio (sendgrid.com)

Code Send Mail C#

How to fix (the operation has timed out) ... | DaniWeb

MailMessage mail = new MailMessage();
SmtpClient SmtpServer = new SmtpClient("smtp.gmail.com");
 
mail.From = new MailAddress(_from);
mail.To.Add(sendto);
mail.Subject = subject;
mail.IsBodyHtml = true;
mail.Body = content;
 
mail.Priority = MailPriority.High;
 
SmtpServer.Port = 587;
SmtpServer.Credentials = new System.Net.NetworkCredential(_from, _pass);
SmtpServer.EnableSsl = true;
 
SmtpServer.Send(mail);​SmtpClient smtp = new SmtpClient();
smtp.Host = “smtp.gmail.com”;
smtp.Port = 465;

// ----------​​----------​​----------​​----------​​----------​​----------​​----------​​----------​​----------​​

smtp.Credentials = new System.Net.NetworkCredential(“uid”, “pwd”);
smtp.EnableSsl = true;
System.Net.Mail.MailMessage message = new MailMessage(“ee@hotmail.com”, “ee@hotmail.com”, “Subject”, “Body”);

message.BodyEncoding = System.Text.Encoding.UTF8;

message.IsBodyHtml = true;
smtp.Send(message);

// ----------​​----------​​----------​​----------​​----------​​----------​​----------​​----------​​----------​​

protected void Page_Load(object sender, EventArgs e)
{
SendEmailTOAllUser();
}
 
 
protected void SendEmail(string toAddresses, string fromAddress, string MailSubject, string MessageBody, bool isBodyHtml)
{
SmtpClient sc = new SmtpClient("MAIL.companyDomainName.com");
 try
 {
 MailMessage msg = new MailMessage();
 msg.From = new MailAddress("pssp@companyDomainName.com", "PMOD Safety Services Portal (PSSP)");
 
 // In case the mail system doesn't like no to recipients. This could be removed
 //msg.To.Add("pssp@companyDomainName.com");
 
 msg.Bcc.Add(toAddresses);
 msg.Subject = MailSubject;
 msg.Body = MessageBody;
 msg.IsBodyHtml = isBodyHtml;
 //Response.Write(msg);
 sc.Send(msg);
 }
 catch (Exception ex)
 {
 throw ex;
 }
 
 }
 
 protected void SendEmailTOAllUser()
 
 {
 string connString = "Data Source=localhost\\sqlexpress;Initial Catalog=psspEmail;Integrated Security=True";
 
 using (SqlConnection conn = new SqlConnection(connString))
 {
 var sbEmailAddresses = new System.Text.StringBuilder(1000);
 string quizid = "";
 
 conn.Open();
 
 string cmdText = "SELECT MIN (QuizID) As mQuizID FROM dbo.QUIZ WHERE IsSent <> 1";
 using (SqlCommand cmd = new SqlCommand(cmdText, conn))
 {
 SqlDataReader reader = cmd.ExecuteReader();
 if (reader != null)
 {
 while (reader.Read())
 {
 // There is only 1 column, so just retrieve it using the ordinal position
 quizid = reader["mQuizID"].ToString();
 
 }
 }
 reader.Close();
 }
 
 string cmdText2 = "SELECT Username FROM dbo.employee";
 using (SqlCommand cmd = new SqlCommand(cmdText2, conn))
 {
 SqlDataReader reader = cmd.ExecuteReader();
 if (reader != null)
 {
 while (reader.Read())
 {
 var sName = reader.GetString(0);
 if (!string.IsNullOrEmpty(sName))
 {
 if (sbEmailAddresses.Length != 0)
 {
 sbEmailAddresses.Append(",");
 }
 // Just use the ordinal position for the user name since there is only 1 column
 sbEmailAddresses.Append(sName).Append("@companyDomainName.com");
 }
 }
 }
 reader.Close();
 }
 
 string cmdText3 = "UPDATE dbo.Quiz SET IsSent = 1 WHERE QuizId = @QuizID";
 using (SqlCommand cmd = new SqlCommand(cmdText3, conn))
 {
 // Add the parameter to the command
 var oParameter = cmd.Parameters.Add("@QuizID", SqlDbType.Int);
 // Get a local copy of the email addresses
 var sEMailAddresses = sbEmailAddresses.ToString();
 
 
 string link = "<a href='http://pmv/pssp/StartQuiz.aspx?testid=" + quizid + "'> Click here to participate </a>";
 string body = @"Good day, <br /><br />
 <b> Please participate in the new short safety quiz </b>"
 + link +
 @"<br /><br />
 Also, give yourself a chance to gain more safety culture by reading the PMOD Newsletter.
 <br /> <br /><br /> <br />
 This email was generated using the <a href='http://pmv/pssp/Default.aspx'>PMOD Safety Services Portal (PSSP) </a>. 
 Please do not reply to this email.
 ";
 
 SendEmail(sEMailAddresses, "", "Notification of New Weekly Safety Quiz", body, true);
 
 // Update the parameter for the current quiz
 oParameter.Value = quizid;
 // And execute the command
 cmd.ExecuteNonQuery();
 }
 conn.Close();
 }
 }