How To Use Sendgrid In Asp.Net C#

The use of C# in ASP.NET applications allows for the easy implementation of SendGrid, a dependable cloud-based provider for transactional email delivery. This post offers a step-by-step explanation to assist in the setup.

Setting up SendGrid

To start, you’ll need to create a SendGrid account and set up an API key. You can do this by logging in to your SendGrid account and navigating to Settings -> API Keys. Click on ‘Create API Key’, give it a name, and set the permissions. Copy the API Key and keep it safe, as you won’t be able to retrieve it again.

Installing SendGrid NuGet Package

In your ASP.NET project, you will need to install the SendGrid NuGet package. You can do this by running the following command in the Package Manager Console:

PM> Install-Package SendGrid

Using SendGrid API in Your Application

Now, let’s create a simple function that allows us to send an email. First, you’ll want to import the SendGrid namespaces by adding the following lines at the top of your C# file:

using SendGrid;
using SendGrid.Helpers.Mail;

Next, let’s create a function named SendEmail which will use the SendGrid API to send an email:

public async Task SendEmail(string toEmail, string subject, string content)
    var apiKey = "your_sendgrid_api_key";
    var client = new SendGridClient(apiKey);
    var from = new EmailAddress("[email protected]", "Your Name");
    var to = new EmailAddress(toEmail);
    var msg = MailHelper.CreateSingleEmail(from, to, subject, content, content);
    var response = await client.SendEmailAsync(msg);

In this function, you replace your_sendgrid_api_key with the SendGrid API key you created earlier. The from email address should be your own email address or the email address you want the emails to be sent from. The toEmail, subject, and content parameters are obtained from the function arguments.

With this function, you can now easily send emails in your ASP.NET application using SendGrid! Simply call the SendEmail function with the appropriate arguments whenever you need to send an email.


In this post, we’ve shown how you can easily send emails in your ASP.NET applications using the SendGrid API. By integrating SendGrid into your projects, you can ensure reliable email delivery without the hassle of setting up your own email servers. Happy coding!