Your brand gets a short mention in the body of an email the publisher already sends, such as a line in a newsletter or a confirmation email. Techlicious and The Wayward Home offer it this way.
How it's sold
You arrange it directly with the publisher, often as an add-on to another package. Example ad spots include a newsletter mention and a guide promotion to subscribers.
What it costs
Most publishers quote this on request, so ask for a rate card before you plan a budget. Mentions are usually priced per send or as a flat fee for a short run.
What you supply
You supply one or two lines of copy and a link, and sometimes a logo.
Best for
It suits adding a low-cost nudge on top of a bigger campaign.
Before you buy
Check where in the email the mention sits, because a line near the bottom gets far fewer clicks than one near the top.