title: SendGrid -- How to delete a single Marketing Campaign recipient with API and PHP
body: <p>Will someone help me with the PHP code to authenticate my Sendgrid account connection and then delete a Marketing Campaign recipient via API?</p>
  
  <p>From the help documentation, this appears to be the command line -- DELETE <a href="https://api.sendgrid.com/v3/contactdb/lists/" rel="nofollow noreferrer">https://api.sendgrid.com/v3/contactdb/lists/</a>{list_id}/recipients/{recipient_id} HTTP/1.1 -- but I can't figure out what to do with it, since it isn't regular PHP code.  The only sample code I found pertained to Legacy Newletters (which I got to work) and not contacts used by Marketing Campaigns.</p>