If you want to know how to email courses to your website/blog visitors, you need to take a course yourself!

What you need is an autoresponder, something that will automate the process of sending a sequence of emails to any number of emails.
Here are the two main players in the email marketing field. Those two companies can ease the process for you by taking off your mind any technical problem that can arise from sending many emails regularly.

So... how to email courses? Subscribe for free to each of them and learn from their email course dealing with tips on how to do email marketing. And later you can decide which one gives you the best bang for your buck!