These emails that are sent automatically to your list after discharge subscriber known as autoresponders.

MailRelay the offers from the zero point in the free plan and you can enjoy them from the beginning.

You can use them to :

Send a welcome gift to your new subscribers automatically after discharge : click here.
Schedule a series of emails to educate your readers and show everything you can find on your blog / website : click here.
Or create a free course divided into several emails .

In the following link you will find several articles on configuring autoresponders in MailRelay that may be useful to start :

Autoresponders in MailRelay