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Send Emails in ASP.NET using Gmail Credentials

, 10 Nov 2008 CPOL
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This article contains code to send email using Gmail accounts.

Introduction

As ASP.NET web developers, we often have to include an email sending module in our websites. When I was completing my third year project in the university, I had the same requirement in my web project. I had to go through so many web sites and blogs to find a solution. Using the class file included with this article, you can send emails by entering your Gmail account credentials.

Background

Make sure to instantiate the instance of this class with the correct parameters.

Using the Code

To use this class, add this class to the App_Code folder in your website. Then, create a web page to get the required user input to send a mail. E.g.: To, Subject, and Message. Then, edit the username and password files as you want. Here, to allow a user to send mails, make sure you get the username and password using the website. Then, add two more variables to pass the username and password to the application.

Edit sendMail() as follows:

public static void sendMail(string to, string from, string subject, 
              string body,string username, string password)
{
    ///Smtp config
    SmtpClient client = new SmtpClient("smtp.gmail.com", 465);
    // Edit password and username
    client.Credentials = new NetworkCredential(""+username+"@gmail.com", password);
    client.EnableSsl = true;

    Mail.Fields["http://schemas.microsoft.com/cdo/configuration/sendusername"] = 
                ""+username+"@gmail.com";
    Mail.Fields["http://schemas.microsoft.com/cdo/configuration/sendpassword"] = password;

If you do not allow every user to send email, but only for certain users, then you can use a common email for all the email senders, succh as admin@obrs.com. Then, you don't need to change any other method definition, but make sure to change the username and the password.

client.Credentials = new NetworkCredential("USERNAME@gmil.com", "PASSWORD");
Mail.Fields["http://schemas.microsoft.com/cdo/configuration/sendusername"] = 
            "USERNAME@gmail.com";
Mail.Fields["http://schemas.microsoft.com/cdo/configuration/sendpassword"] = "PASSWORD";

Points of Interest

The main feature in this class is it has a back up plan, just in case, to invoke. The mail sending method is sendMail(), but if it fails, it invokes an alternate mail sending method SendMailAlt() using the appropriate attributes.

But, this second method does not allow us to send attachments. So don't allow the user to add attachments to any of the methods.

License

This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

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About the Author

Harshana Eranga Martin
Engineer Computer Science & Engineering,Uni. Of Moratuwa.
Sri Lanka Sri Lanka
I'm currently an undergraduate in the University of
Moratuwa in the faculty of Engineering and my field of specialization is Computer Science & Engineering.
 
My Hometown is Matugama which is situated in the Kalutara district & i attended C.W.W. Kannangara central College,Matgama & St.Mary's Colege, Matugama.
 
I entered to the university in the Mid 2006 & will pass out in the Mid 2010.

Comments and Discussions

 
GeneralMy vote of 4 PinmemberSandeep Ramani9-Sep-11 2:44 
Questionms outlook installation issue ? Pinmembersuis31-Mar-10 4:52 
AnswerRe: ms outlook installation issue ? PinmemberHarshana Eranga Martin31-Mar-10 5:08 
GeneralRe: ms outlook installation issue ? Pinmembersuis31-Mar-10 5:50 
AnswerRe: ms outlook installation issue ? PinmemberHarshana Eranga Martin31-Mar-10 7:06 
GeneralRe: ms outlook installation issue ? Pinmembersuis31-Mar-10 22:36 
GeneralRe: ms outlook installation issue ? PinmemberHarshana Eranga Martin31-Mar-10 22:57 
GeneralRe: ms outlook installation issue ? Pinmembersuis31-Mar-10 23:09 
AnswerRe: ms outlook installation issue ? [modified] PinmemberHarshana Eranga Martin31-Mar-10 23:25 
GeneralRe: ms outlook installation issue ? Pinmembersuis1-Apr-10 5:46 
AnswerRe: ms outlook installation issue ? PinmemberHarshana Eranga Martin1-Apr-10 6:39 
Generalits great Pinmembermahendra_apte8510-Apr-09 15:08 
Questioncan not resolve server Pinmemberthilina13-Mar-09 21:29 
Generalerror PinmemberMember 47649556-Mar-09 5:23 
AnswerRe: error PinmemberHarshana Eranga Martin7-Mar-09 0:48 
GeneralGood article PinmemberDonsw25-Jan-09 16:33 
GeneralThe transport failed to connect to the server Pinmemberravifree17-Nov-08 4:16 
AnswerRe: The transport failed to connect to the servers PinmemberHarshana Eranga Martin30-Nov-08 19:50 
GeneralGreat Work!!! and a question Pinmemberaakash13singh18-Oct-08 11:31 
AnswerRe: Great Work!!! and a question PinmemberKanedogg0828-Oct-08 14:04 
GeneralRe: Great Work!!! and a question PinmemberHarshana Eranga Martin30-Nov-08 19:59 
GeneralFailure sending Mail... Pinmemberquitchat17-Oct-08 19:26 
GeneralRe: Failure sending Mail... PinmemberHarshana Eranga Martin18-Oct-08 2:42 
GeneralRe: Failure sending Mail... Pinmemberquitchat18-Oct-08 4:33 
AnswerRe: Failure sending Mail... PinmemberHarshana Eranga Martin18-Oct-08 8:25 

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