Generate

This example assumes using Resend; is in scope and apiKey contains your Resend API key.

var apiKey =
    Environment.GetEnvironmentVariable("RESEND_API_KEY") is { Length: > 0 } value
        ? value
        : throw new AssertInconclusiveException("RESEND_API_KEY environment variable is not found.");

using var client = new ResendClient(apiKey);

// The client has sub-clients for different API areas.