title: Is there any limit to Gmail SMTP server requests/ sec?
body: <p>I am trying to send email using Gmail SMTP server from java (deployed in tomcat). When doing load testing if the number of request / sec to SMTP server grows more (>20) I get this exception </p>
  
  <pre><code>javax.mail.MessagingException: Could not connect to SMTP host: smtp.gmail.com, port: 587;
  
  nested exception is:java.net.ConnectException: Connection timed out
  </code></pre>
  
  <p>Is there any limitations in access rate for Gmail SMTP server ? Should I introduce delay between each request ?</p>