title: Custom validation to check business email and phone number in Contact Form 7 in wordpress
body: <p>I am new to wordpress and php, I'm using contact form 7 in my wordpress website. In that I need to validate the email address, block all free domains like gmail, yahoo,etc., I need to validate Indian phone number with country code. </p>
  
  <p>I had 4 types of contact form but I need this custom validation for only one form. I googled and found <a href="https://wordpress.org/support/topic/blocking-free-email-accounts-with-php-or-contact-form-7">this</a> but it is not working. Someone please help me with this issue.</p>
  
  <p>Thanks.</p>