Send email using gmail smtp server

Question

i am not able to send email from my application (using c#). i am getting an exception SMTP Email Error: Unable to read data from the transport connection: net_io_connectionclosed

Arun Kumar Tiwari · Answer

Try this, http://www.aspdotnet-suresh.com/2010/12/how-to-send-mail-using-gmail.html

Mageshwaran R · Answer

Hi, Try this code: using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Net.Mail; using System.Net; namespace ConsoleApplication2 { class Program { static void Main( string [] args) { var client = new SmtpClient( "smtp.gmail.com" , 587) { Credentials = new NetworkCredential( "myusername@gmail.com" , "mypwd" ), EnableSsl = true }; client.Send( "myusername@gmail.com" , "myusername@gmail.com" , "test" , "testbody" ); Console.WriteLine( "Sent" ); Console.ReadLine(); } } }

Shweta Deshmukh · Answer

I am getting data from database exporting in excel and sending the excel file through email.. but unable to send the file. it is showing err: Failure sending mail(inner Exception :unable to read data from the transport connection net_io_connectionclosed. gmail). please help me solve the issue.. would be a great help.. Thanks in Advance sir

Shweta Deshmukh · Answer

public void SendEmail(string MailTo, string MailSubject) { try { string AppLocation = ""; AppLocation = System.IO.Path.GetDirectoryName(System.Reflection.Assembly.GetExecutingAssembly().CodeBase); AppLocation = AppLocation.Replace("file:\", ""); string file = AppLocation + "\ExcelFiles\DataFile.xlsx"; MailMessage mail = new MailMessage(); SmtpClient SmtpServer = new SmtpClient(ConfigurationManager.AppSettings["Host"].ToString());//smtp.gmail.com mail.From = new MailAddress(ConfigurationManager.AppSettings["MailFrom"].ToString());//abc@gmail.com mail.To.Add(MailTo); // Sending MailTo List li = new List (); li.Add("test123@gmail.com"); //mail.CC.Add(string.Join (",", li)); // Sending CC //mail.Bcc.Add(string.Join (",", li)); // Sending Bcc mail.Subject = MailSubject; // Mail Subject //mail.Body = "TwoWaySummary Report *** This is an automatically generated email, please do not reply ***"; System.Net.Mail.Attachment attachment; attachment = new System.Net.Mail.Attachment(file); //Attaching File to Mail mail.Attachments.Add(attachment); // SmtpServer.Port = Convert.ToInt32(ConfigurationManager.AppSettings["PORT"]); //PORT SmtpServer.Port = 465;//also tried with 587 SmtpServer.EnableSsl = true; SmtpServer.DeliveryMethod = SmtpDeliveryMethod.Network; SmtpServer.UseDefaultCredentials = false; //SmtpServer.Credentials = new NetworkCredential("Email id of Gmail", "Password of Gmail"); // SmtpServer.Credentials = new System.Net.NetworkCredential("shweta.d@routemobile.com", "shweta123"); SmtpServer.Credentials = new NetworkCredential("noreply@routemobile.com", "Rsl@2005"); // SmtpServer.Credentials = new System.Net.NetworkCredential("no-reply@routemobile.com", "shweta123"); SmtpServer.Send(mail); } catch (Exception ex) { logger(ex.Message); logger(ex.StackTrace); } finally { } }

Rajeesh Menoth · Answer

Hi, Can you share your code..!!

Abhishek Kumar · Answer

its not working

Rajeesh Menoth · Answer

Hi, EnableSsl: Check your host accepts SSL Connections (True or False). Check my article for more reference : http://www.c-sharpcorner.com/UploadFile/2a6dc5/how-to-send-a-email-using-Asp-Net-C-Sharp/

Amit Kumar · Answer

It is a property of SMTP Class EnableSsl – Specify whether your host accepts SSL Connections (Gmail: True) If you will have to create an object of SmtpClient class and allow EnableSsl SmtpClient client = new SmtpClient(); client.EnableSsl=True;

Abhishek Kumar · Answer

what is client.EnableSsl

Amit Kumar · Answer

Hi dear, Please use it I think that you will not enable Ssl if you are not enable it . So enable it like client.EnableSsl = true; SmtpClient smtp = new SmtpClient(); smtp.Host = "smtp.gmail.com"; smtp.EnableSsl = true; NetworkCredential NetworkCred = new NetworkCredential(txtEmail.Text, txtPassword.Text); smtp.UseDefaultCredentials = true; smtp.Credentials = NetworkCred; smtp.Port = 587; after that if this solution is not solve your problem then follow below link.. http://www.aspsnippets.com/Articles/Send-email-using-Gmail-SMTP-Mail-Server-in-ASPNet.aspx

Chandu Kumawat · Answer

hi refer this.. http://www.aspsnippets.com/Articles/Send-email-using-Gmail-SMTP-Mail-Server-in-ASPNet.aspx http://www.aspdotnet-suresh.com/2010/12/how-to-send-mail-using-gmail.html

Send email using gmail smtp server

SMTP Email Error: Unable to read data from the transport connection: net_io_connectionclosed

Answers (11)