To get setup:

1. Run composer install
2. Copy config.php.dist into config.php and update the values accordingly
3. Generate an acceptance.csv containing: First Name, Last Name, Email, and a pipe-separated list of talk titles. Please see acceptance.csv.sample for an example.
4. Generate a rejection.csv contianing: First Name, Last Name, and Email.
5. Update the acceptance.txt and rejection.txt templates as needed.

php send_emails.php dry will perform a dry run and show the emails that would attempt to send.

php send_emails.php "some@email.tld" will override the TO field for all emails.

You'll wish to alter the source of send_emails.php to dump message contents. About line 104 is a good place to drop a print $message->getText(); to inspect message contents.

php send_emails.php will perform a LIVE email of all recipients. ENSURE YOU'VE TESTED AS THERE IS NO GOING BACK