title: Nodemailer SES API vs SMTP
body: <p>I've writing bulk email script in node.js that uses Amazon SES.</p>
  
  <p>The scripts divides a large list into queues and each queue is executed separately. For each queue I use a different connection (even though it's none blocking) since I'm waiting on the response before i proceed to the next email in the queue.</p>
  
  <p>I can connect and send via amazon SES using their API or using SMTP. I would assume that both methods will keep the connection open for the entire queue.</p>
  
  <p>I was wondering if one has any advantages over the other. Is there any advantage in performance in favor of the API or the SMTP?</p>