So ...
There is no such thing as email marketing without a clean, constantly growing email list.
The very first – mandatory – step in any email marketing process is to continuously enroll new customers, prospects, clients, leads, etc, who will give you the permission to email them because they want to get helpful and useful information from you. They are your subscribers.
In plain English: you'll have to use an email marketing service (autoresponder) that will allow you to build your list, to manage your subscribers, to send automated broadcast messages and follow up emails, etc.
Needless to say, there are many third-party email service providers out there ... AWeber, Mailchimp, GetResponse, ActiveCampaign, etc.
However, AWeber is probably the most popular email marketing service used by many marketers and Wordpress users around the world.
Personally, I'm a huge fan of Aweber ...
With that having said, let's see the magic ...