title: Google gmail quickbutton action
body: <p>I'm reading about the new development of Google quick action buttons in the mail inbox.
  I'm a little bit lost in this topic and not understand how I can include this function in my emails.
  I have read about DKIM/SPF but I don't know if this functionality could need to do an google app.
  I have my mail server with marketing segmentation and I want this button is visible when email come to client (destiny) gmail inbox (guess only works in gmail....). If i have included the markup code in html in my emails, why i can't see this button?</p>
  
  <p>would it need create a specific mail application to implement this feature and send emails from this app? Someone tried this?</p>
  
  <p>I know maybe this has been reply before but i think must start more down... so.. sorry.</p>
  
  <p>Thanks and regards!</p>