1. Install Easy WP SMTP Plugin
  2. Go to Settings -> Easy WP SMTP -> SMTP Setting and add following info :
    • From Email Address :  ( Sender Email Address )
    • SMTP Host : (smtp.office365.com)
    • SMTP Port : 587
    • Type of Encryption : (STARTTLS)
    • SMTP Authentication : ( Yes )
    • SMTP Username : (Sender Email Address)
    • SMTP Password : (Sender Email’s Passsword)
  3. Save Changes !
  4. Go  to Test Email and test the configuration !