[[your name]] here :) from [[company]].
I bumped into [[this article]] on LinkedIn and thought I'd reach out to, see if you'd be interested in a content partnership with [[your company]].
More specifically, I'd love to write an article for your blog on a [[topic]] [[(quick topic explanation)]]. If you're open, I'd be happy to send over a couple of fleshed-out ideas.
In return, I'd be happy to help you with your goals in any way I can.
Our blogging team isn't taking any guest posts submissions for this year, but [[your offer]].
Would this be something you'd be interested in?