This post is a test post typed in website and arriving to you without the need to go into Mailchimp at all.
The advantage it has is there is no need to mess with mail chimp.
It can appear on the website also, or not, depending on which you choose.
The disadvantage it has is it’s most suitable for sending to a general list rather than targeted lists.
Targeted lists can be organised within the plugin, but need more if/and configuration, so it’s simpler to use for general lists.
Like Christmas or general updates.