Send custom WooCommerce order emails with a transactional template
Create a custom WooCommerce transactional email class that triggers on a specific order status change, uses the WooCommerce email template system, and sends styled HTML email.
Send custom WooCommerce email notifications with PHP
Trigger custom WooCommerce emails on order status changes and schedule follow-up emails with WP-Cron.
Send message to different e-mails in depending choice
How send message to different e-mail boxes? Problem: How send message to different emails boxes in depending choice of user in contact form?