As of v0.9.4.0+

How to send the emails using WP Mail function or using SMTP plugin?

Note: The emails which are already scheduled (like 24hrs invitee reminder email) will go as per old setting.

Navigate to WP Admin › WPCal › Settings › General Settings.
Scroll down to the Email section.
Enable the option "I understand. Use WP Mailer instead".
Check the box to activate sending mail to through WP Mail.
Save it.

Now all your emails will be going through WP Mail function. If SMTP is configured, then it will go through it.
Was this article helpful?
Thank you!