Hi,
Thanks for using the Events Calendar.
Here on the pre-sales forum, I’m afraid we do not provide support. I would ask that you take any support questions across to our wordpress.org forum – our staff scan it periodically and other community members may also be able to help out.
The Events Calendar
or
Event Tickets and Registration
Having said that you can resend WooCommerce Ticket Emails from the Order Itself in the Action Section of the Order.
Try this plugin to change the from email:
https://wordpress.org/plugins/wp-change-default-email/
For follow up questions please post in the respective forums on WordPress.org or renew your license to post in the premium forum.
Thanks again!