A custom email can be sent to your new subscribers upon sign-up.
This option can be enabled in the Content Upgrades PRO settings.
You can also set up a delay time or send it immediately.
The text of an email can be set for every content upgrade independently.
You can set up the Subject of a letter, Sender Name, Sender E-mail and the Message itself.
You can use HTML tags in your email body.
Custom email is a good way to send a link to your bonus content to a new subscriber.