Publishers offering "Newsletter Inline Ad" spots

A newsletter inline ad sits in the body of an email, between stories or sections, and looks like part of the content. Publishers like Platformer and World History Encyclopedia sell it.

How it's sold: Fourteen publishers list it, all by email. Advertisers contact the publisher, and some publishers sell by the send or by the month.
Typical price: USD 1,200 per month at the median, or USD 140 per send for publishers that sell single sends.
What you supply: A short headline, a sentence or two of copy, a link and sometimes a small image.
Best for: Advertisers who want readers already engaged with the content to click through.
Before you buy: Position in the email matters, since a spot lower down gets fewer readers.