You can promote your blog to visitors so that they know more about your product and also go on to subscribe to your mailers or use your product as they learn about you.
For this example, we will only be targeting users who have never been to the blog. For this, we will be assuming your blog is on "/blog"
To set this campaign up, our segmentation rule will look like this
Where we target users who have not been to any page which has "/blog" in it.
You can then set up the CTA based on your preference.
Next we head over to the targeting section, where we specific the following rule
Where we specify that the CTA can be shown on any page, but we exclude /blog from it to take care of any edge cases.
That is it, Your campaign to campaign is ready to run.