SendKit .NET SDK

Official .NET SDK for the SendKit email API.

Installation

dotnet add package SendKit

Usage

Create a Client

using SendKit;

var client = new SendKitClient("sk_your_api_key");

Send an Email

var response = await client.Emails.SendAsync(new SendEmailParams
{
    From = "you@example.com",
    To = ["recipient@example.com"],
    Subject = "Hello from SendKit",
    Html = "<h1>Welcome!</h1>"
});

Console.WriteLine(response.Id);

Send a MIME Email

var response = await client.Emails.SendMimeAsync(new SendMimeEmailParams
{
    EnvelopeFrom = "you@example.com",
    EnvelopeTo = "recipient@example.com",
    RawMessage = mimeString
});

Error Handling

try
{
    var response = await client.Emails.SendAsync(parameters);
    Console.WriteLine($"Sent: {response.Id}");
}
catch (SendKitException ex)
{
    Console.WriteLine($"API error: {ex.Name} ({ex.StatusCode}): {ex.Message}");
}

Configuration

// Read API key from SENDKIT_API_KEY environment variable
var client = new SendKitClient();

// Custom base URL
var client = new SendKitClient("sk_...", baseUrl: "https://custom.api.com");

// Custom HttpClient
var client = new SendKitClient("sk_...", httpClient: myHttpClient);