You can use your blog post to your advantage with that being slimy or salesy in mass email marketing campaigns that people generally find off putting in the first place. If you incorporate calls to action in your blog posts, think the links back to your contact page, you know, you're offering free offers, maybe tutorials, infographics, all that stuff. You can use that to effectively promote your products and services while completely avoiding that yucky feeling you get after sending a sales pitch in an email to your lead list.