title: PHP Sending mail issues
body: <p>I have an application to notify "friends" if there is an activity on their associates' pages.</p>
  
  <p>This works but after series of tests seems it sends to the first few people and not to the rest.</p>
  
  <p>No errors as the script redirects to mail sent page.</p>
  
  <p>Now my host provider has a limit of 500 mails per hour for an account on their platform and the email list is over 3000.</p>
  
  <p>Could this be the problem? What better options do I have?</p>
  
  <p>Thank you.</p>
  
  <p>Currently using PHP Mail Function</p>