Mastering Email Testing and Sending in PHP Testing and sending emails are very important aspects of email deliverability. There are various standards and authentication such as SMTP and MIME, Base64 and DKIM that must be followed if you are using PHP based online-services to test and send emails. There has been a rise in the number of alternative methods that we may use to test and send emails with PHP throughout the years, which will be discussed in this post. Let’s get started! Table of Contents Testing Emails in PHP Email Testing Checklist Various methods for testing emails in PHP Sending