Hello,
Thanks for reaching out!
This is not something that is possible out of the box, but you could do this with a customization. If you’d like to give it a shot, our themer’s guide is the place to start! The template you’ll want to copy and edit can be found at wp-content/plugins/event-tickets/src/views/tickets/email.php.
We are limited in the amount of support that we can provide for customizations, but if you get stuck or have any questions, please let me know – I’ll be happy to try to point you in the right direction!
Thanks,
Jennifer