Send Email using C#

The .NET framework has built-in namespace for handling email settings, which is System.Net.Mail namespace. In the following example, I’ll use two classes from the System.Net.Mail namespace:

For email settings, we will use the MailMessage class and
For smtp settings and sending email, we will use the SmtpClient class

What is SMTP?
SMTP stands for Simple Mail Transfer Protocol. It provides set of communication settings that allows our software or web applications to transmit or send emails over the internet with configured smtp settings.

Required Gmail SMTP Settings:
Following are the list of SMTP settings that are mainly required to send emails:

SMTP Server/Host: It’s a server name. For example, smtp.gmail.com
SMTP Username: Your full email address.  For example, yourname@gmail.com
SMTP Password: Your account password
SMTP port (TLS): 587
SMTP port (SSL): 465
SMTP TLS/SSL required: yes

 

SmtpClient:
This class allows the application to send email by using Simple Mail Transfer Protocol. Basic properties of this class needs to be assigned values to acheive this,  ‘Port’, ‘Credentials, ‘SMTP server name’.

These are the list of SMTP Servers and its port numbers.

Sl.No	Mail Server	SMTP Server( Host )	Port Number
1	Gmail	smtp.gmail.com	587
2	Outlook	smtp.live.com	587
3	Yahoo Mail	smtp.mail.yahoo.com	465
4	Yahoo Mail Plus	plus.smtp.mail.yahoo.com	465
5	Hotmail	smtp.live.com	465
6	Office365.com	smtp.office365.com	587
7	zoho Mail	smtp.zoho.com	465

 

in your program import System.Net.Mail and System.Net

public void sendEmail()
{
MailMessage message = new MailMessage();
SmtpClient smtpClient = new SmtpClient();

try
{
MailAddress fromAddress = new MailAddress(“yourmail@gmail.com”);
message.From = fromAddress;
message.To.Add(“receivermail@gmail.com”); //email id to whome you want to send

message.Subject = “Subject of your mail”;
message.IsBodyHtml = true;
message.Body = “This is the body of the mail that you want to send.”;
smtpClient.Host = “smtp.gmail.com”; // We use gmail as our smtp client
smtpClient.Port = 587;
smtpClient.EnableSsl = true;
smtpClient.UseDefaultCredentials = true;
smtpClient.Credentials = new  NetworkCredential(“yourmail@gmail.com”, “yourpassword”);

smtpClient.Send(message);

}
catch (Exception ex)
{
Response.Write(ex.Message);
ClientScript.RegisterStartupScript(this.GetType(), null, “alert(‘Failed to send mail’)”);
}

}