Mailchimp integration

Hello,

I just bought the Add-On EMail lock.
You offered
“Simply open the downloads you would like to be email locked and check the email lock checkbox. Email locked downloads will be only be accessible after a valid email address is entered.”

Now when installing it I read that we should send subscribers the link in the Welcome email of Mailchimp. This is not what we need since also old subscriber need to have access without us sending a mail.

How can this be done?

https://wordpress.org/plugins/download-monitor/