Last reviewed by Robert Prime — May 2026
Newsletter promo sites are one of the most dependable paid sales levers in indie publishing: pay a flat fee, they email your discounted book to a big list of genre readers, you get a sales spike. Here's the 2026 tier list and how to use them.
The tier list
Tier 1 — BookBub Featured Deals. The gold standard. Enormous, curated genre lists; a Featured Deal can sell hundreds to thousands of copies depending on genre and list size. Hard to get accepted and costs £100s, but nothing else matches the reach. (Different from BookBub Ads, which is the self-serve CPC platform.) See BookBub Featured Deal strategy.
Tier 2 — the affordable workhorses:
- Freebooksy — for free books; excellent for permafree series starters.
- Bargain Booksy — for 99p/99c deals.
- Fussy Librarian — genre-targeted, good value, reliable.
- Robin Reads — strong for US deals.
- Books Butterfly, Book Cave, Many Books — secondary options worth testing.
The stacking play
The single most effective tactic: stack promos across consecutive days during a price drop. Drop your book to free or 99p, then schedule Freebooksy/Bargain Booksy + Fussy Librarian + Robin Reads across three or four days. The compounding downloads push your Amazon ranking up, which many authors find lifts Amazon's own algorithmic visibility — the promo spend buys the initial momentum, and the algorithm can carry it. A single isolated promo is far weaker than a coordinated stack.
What works best
- Series book one at free or 99p, feeding full-price sequels — the classic indie model. The promo sells book one cheap; the series earns the profit.
- Tight genre fit — check each site's genres; a thriller promo'd to a romance list wastes money.
- Meeting review minimums — many sites require a minimum number of reviews (often 5-10+), so build review volume first via ARC platforms.
Frequently asked questions
Which newsletter promo site has the best ROI?
BookBub Featured Deals for reach (if accepted); Freebooksy, Bargain Booksy and Fussy Librarian for affordable, reliable value. Stacking several beats any single one.
What's the difference between BookBub Featured Deals and BookBub Ads?
Featured Deals are curated newsletter promos with huge reach; BookBub Ads is the self-serve cost-per-click platform. Different products.
How do I get the most from promo sites?
Stack several across consecutive days during a price drop so downloads compound and can lift Amazon visibility. Use series book one at free/99p to feed paid sequels.
Do promo sites have requirements?
Most require tight genre selection and a minimum number of reviews (often 5-10+). Build review volume before applying.
Related guides
- BookBub Featured Deal strategy
- BookBub Ads (CPC)
- Free promotion strategy (KDP)
- Series strategy for self-published authors
- BookSirens review
External references
- BookBub Partners — Featured Deals and submission guidance
- Alliance of Independent Authors
About this guide
Written by Robert Prime for publishing.co.uk. Last reviewed May 2026.
