gem "sendkit"

require "sendkit"

client = SendKit::Client.new("sk_your_api_key")

result = client.emails.send(
  from: "you@example.com",
  to: "recipient@example.com",
  subject: "Hello from SendKit",
  html: "<h1>Welcome!</h1>"
)

puts result["id"]

result = client.emails.send_mime(
  envelope_from: "you@example.com",
  envelope_to: "recipient@example.com",
  raw_message: mime_string
)

begin
  client.emails.send(...)
rescue SendKit::Error => e
  puts e.name        # e.g. "validation_error"
  puts e.message     # e.g. "The to field is required."
  puts e.status_code # e.g. 422
end

# Read API key from SENDKIT_API_KEY environment variable
client = SendKit::Client.new

# Custom base URL
client = SendKit::Client.new("sk_...", base_url: "https://custom.api.com")