C# / .NET SDK

dotnet add package Render25

using Render25;

var client = new Render25Client(
    apiKey: Environment.GetEnvironmentVariable("RENDER25_API_KEY")!
);

var result = await client.Email.SendAsync(new SendEmailRequest
{
    From    = "[email protected]",
    To      = new[] { "[email protected]" },
    Subject = "Hello from .NET",
    Html    = "<p>Sent via Render25 .NET SDK.</p>",
    Text    = "Sent via Render25 .NET SDK."
});

Console.WriteLine($"Sent: {result.Id}");

// In Program.cs or Startup.cs
builder.Services.AddRender25(options =>
{
    options.ApiKey = builder.Configuration["Render25:ApiKey"]!;
});

// In a controller or service
public class EmailService(IRender25Client client)
{
    public async Task SendWelcomeAsync(string to)
    {
        await client.Email.SendAsync(new SendEmailRequest
        {
            From = "[email protected]",
            To   = new[] { to },
            Subject = "Welcome!",
            Html = "<h1>Welcome aboard.</h1>",
        });
    }
}