How to send emails in asp.net using Gmail

Introduction: Sometimes it is required to send emails from our website to other person.It’s very easy.In my previous article i explained How to send mail with multiple attachments in asp.net with C#,Vb.Net and Send email to multiple users based on CheckBox selection inside GridView and Create registration form and send confirmation email to new registered users in asp.net | Activate or approve user account by activation link in email address and How to send emails in asp.net | How to set Smtp setting in web.config file to send email in asp.net 
Now in this article i am going to explain how you can send email using your GMAIL account credentials i.e. gmail email id and password in asp.net.Just follow the article.

Implementation: Let's create an demo web page to understand how to send email in asp.net using gmail credentials:

• In the design page (.aspx) design the page as:

<table style="width:100%;">

    <tr>

        <td>

            Send To(Email Address)</td>

        <td>

            <asp:TextBox ID="txtEmailId" runat="server" Columns="60"></asp:TextBox>

            </td>

    </tr>

    <tr>

        <td>

            Subject</td>

        <td>

            <asp:TextBox ID="txtSubject" runat="server" Columns="60"></asp:TextBox>

            </td>

    </tr>

    <tr>

        <td>

            Body</td>

        <td>

            <asp:TextBox ID="txtBody" runat="server" Columns="60" Rows="5"

                TextMode="MultiLine"></asp:TextBox>

            </td>

    </tr>

    <tr>

        <td>

             </td>

        <td>

            <asp:Button ID="btnSendEmail" runat="server" onclick="btnSendEmail_Click"

                Text="Send Email" />

            </td>

    </tr>  

</table>

Asp.Net C# Code to send emails in asp.net using Gmail  

First of all Include following namespaces:

using System.Configuration;

using System.Net;

using System.Net.Mail;

• Now in the code behind file(.aspx.cs) write the code to send Email on send mail button as:

protected void btnSendEmail_Click(object sender, EventArgs e)

    {

        if (SendEmailUsingGmail("YourGmailId@gmail.com", txtEmailId.Text.Trim(), txtSubject.Text.Trim(), txtBody.Text.Trim(), "YourGmailPassword"))

        {

            Response.Write("Mail send");

        }

        else

        {

            Response.Write("Error in sending mail");

        }

    }

    private static Boolean SendEmailUsingGmail(string fromEmailAddress, string toEmailAddress, string subject, string messageBody, string gmailPassword)

    {

        try

        {

            SmtpClient smtp = new SmtpClient();

            smtp.Credentials = new NetworkCredential(fromEmailAddress, gmailPassword);

            smtp.Port = 587;

            smtp.Host = "smtp.gmail.com";

            smtp.EnableSsl = true;

            MailMessage message = new MailMessage();

            message.From = new MailAddress(fromEmailAddress);

            message.To.Add(toEmailAddress);

            message.Subject = subject;

            message.Body = messageBody;

            smtp.Send(message);

            return true;

        }

        catch

        {

            return false;

        }

    }

Asp.net VB Code to send emails in asp.net using Gmail

Include following namespaces:

imports System.Configuration

imports System.Net

imports System.Net.Mail

• Now in the code behind file(.aspx.vb) write the code to send Email on send mail button as:

Protected Sub btnSendEmail_Click(sender As Object, e As EventArgs)

                    If SendEmailUsingGmail("YourGmailId@gmail.com", txtEmailId.Text.Trim(), txtSubject.Text.Trim(), txtBody.Text.Trim(), "YourGmailPassword") Then

                                         Response.Write("Mail send")

                    Else

                                         Response.Write("Error in sending mail")

                    End If

End Sub 

Private Shared Function SendEmailUsingGmail(fromEmailAddress As String, toEmailAddress As String, subject As String, messageBody As String, gmailPassword As String) As [Boolean]

                    Try

                                         Dim smtp As New SmtpClient()

                                         smtp.Credentials = New NetworkCredential(fromEmailAddress, gmailPassword)

                                         smtp.Port = 587

                                         smtp.Host = "smtp.gmail.com"

                                         smtp.EnableSsl = True

                                         Dim message As New MailMessage()

                                         message.From = New MailAddress(fromEmailAddress)

                                         message.[To].Add(toEmailAddress)

                                         message.Subject = subject

                                         message.Body = messageBody

                                         smtp.Send(message)

                                         Return True

                    Catch

                                         Return False

                    End Try

End Function

Now over to you:

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