I just wanted to say, I’m a huge fan of your work. I especially loved [[link to one of their recent posts]].
Great stuff! [[Insert key takeaway or funny comment]]
I’m actually publishing a post on [[topic]] next week. Being a master at [[topic]], I thought you might enjoy it.
Would you care if I sent you the link when it goes live to get your feedback?
Thanks for your time,
Subject: Loved [[your work]]