Emailing an E-Ticket

The program follows a specific order when determining which email address to use for sending the E-Ticket. Here’s a summary:

1. 1. The program first checks if a Site Contact Email is provided. If it exists, the E-Ticket will be sent to that email address.
   2. If no Site Contact Email is entered, the program will then check if a Customer Contact Email is provided. If it exists, the E-Ticket will be sent to that email address.
   3. If both Site Contact Email and Customer Contact Email are missing, the program will check if a Billing Address Email is entered. If it exists, the E-Ticket will be sent to that email address.
   4. If none of the above email addresses are provided, the “Send To” field will be left blank.

This sequence ensures that the program attempts to use the most relevant email address first and falls back to alternative options if necessary.