title: How to send a secured (blast) email to thousands users in php?
body: <p>If you are going to send emais to 3000++ users. Will you still use php mail function? I heard, it was not secured enough. How do I send a secured blast emails? I dont want to use third-party software if possible.</p>
  
  <p>If you are going to send blast emails in php, what <strong>method or functions</strong> you will use in php?? (Tried google "advanced sending email in php", but could not find a good answer)</p>
  
  <p>Oh ya,  heard this thing called phpmailer, is it good? Should I replace that with my current mail function? (Its free)</p>
  
  <p>Lastly, what are the things you need prepare to send thousands over emails?</p>