Hi Íñigo!
Thanks for coming back to us! I’m happy to help with this!
Just to confirm I understand what you want to achieve, Do you want to send a copy of the “order email” to the event organizer when a ticket is purchased? If so, then that is an email sent from the ecommerce plugin you are using.
If you are using WooCommerce to sell tickets, then should take a look at the order email template in WP admin > WooCommerce > Settings > Emails tab and see what options you have to customize it like you want.
I hope it help! Let me know if you have other questions.
Cheers!
Victor