Send mail using SendGrid

 Hi, Today I'm writing a brief post on how to send mail through SendGrid using C#.

Here I'm using the free mail service offered by SendGrid, which will expire in a month's time.

1) Go to SendGrid and sign up for a free account https://sendgrid.com/

2) Provide the details

Fill in:

• Name, email, password
• Company name (can be anything)

Verify your email address

Add a phone number (sometimes required for verification)

3) Once you are in, go to Settings > API Keys to generate your API Key. Save your api key in a secure place, as it will not be viewable afterwards.

4) Next, you have to create a Sender Authentication. Go to Settings > Sender Authentication and select from the two sender authentication types available.

1. Domain Authentication [learn more from SendGrid How-to-set-up-domain-authentication ]
2. Single Sender Verification [learn more from SendGrid Docs sender-verification ]

Below is my C# code for a very basic POC console application

        public static void SendEmail()

        {

            System.Net.ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls12;

            MailMessage mail = new MailMessage("from@mail.com", "to@mail.com");

            mail.Subject = "3rd mail TEST Personal Email";

            mail.Body = "3rd mail TEST Personal Sent using manual SMTP ";

            using (SmtpClient smtp = new SmtpClient("smtp.sendgrid.net", 587))

            {

                smtp.Credentials = new NetworkCredential("apikey", "SG.h2******.*******-***");

                smtp.EnableSsl = true;

                smtp.DeliveryMethod = SmtpDeliveryMethod.Network;

                smtp.Send(mail);

            }

        }

Note: SG.h2******.*******-*** is the API Key I received from SendGrid

Execute the code and get your mails delivered. You can also view the mail delivery status from SendGrid Activity Feed.