The Modern Events Calendar Email Troubleshooting includes a feature that allows you to send emails directly from its panel. This feature includes options for automatic confirmation and verification emails that are sent when a booking is made on your website.
Email Troubleshooting via MEC
To send emails from your website, it’s important to enable mail functions in your host. This can be done by contacting your host Provider.
Install SMTP Plugin
Also, you can use a third-party plugin to adjust sending emails through the MEC panel. e.g. SMTP Plugin