Best Book Promotion Sites [2021]

These are the best book promo sites in 2021 for boosting your sales, launches, free promotions, series promotions, and mailing list too. Something for all budgets and experience levels with self-publishing – including a few completely free options.

This list of book promotion sites is curated by me personally. All sites here have been vetted and tested extensively, and are here because of the results they generate. No filler!

You can skip to the section you are looking for below but make sure to check the end for a free course on how to build a marketing campaign. Yes, that’s right, a completely free course on how to promote a book. Read on, pilgrim!

Promo Sites Explained

There’s a whole section at the end on how to use what you might call promo sites, deal sites, ad sites, or readers sites, depending – you would think a community of writers might have nailed down the nomenclature around book promotions after ten years, but there you go.

Promo sites are basically like Groupon for ebooks: authors pay a fee to have their book listed in the daily offers – usually sent out by email – and they get lots of sales or downloads in return. Readers get freebies and discounts, and the author’s book jumps into the charts; everyone wins.

There’s a lot more to using these sites effectively in terms of strategy, and see the Build A Marketing Campaign section at the end for free resources to help you there, but those are the basics of book promotion.

Boost Sales With Promo Stacking

The very best way to use promo sites is to “stack” your promos, as experienced self-publishers say – which just means running several at once. However, don’t make the mistake of running them all on the same day.

The best way to stack promos is one after the other. Here’s a short video explaining the technique:


The Big Daddy of book promo sites deserves a category of its own as it is a different beast. A much larger beast.

BookBub arrived on the scene several years ago and utterly transformed book promotion, to the extent that they have way more juice than everything else here combined. Which is no surprise when you discover they have over ten million voracious readers subscribed to its lists.

Sign up as reader to the BookBub Featured Deals email and you’re asked to pick your favorite genres from 30+ categories. You get daily emails with a range of books in your genres: household names, undiscovered gems, traditionally published, small press, and self-published – a real mix of free books, 99¢ deals, and a few $1.99/$2.99 books – but even those are usually heavily discounted. I buy a few books a week from this email – it’s great!

Getting your book into BookBub’s Featured Deals email is expensive. You can check the full price list here, but what you will see is that a 99¢ will cost anything from $164 for the smallest list right up to just over $1,000 for the very biggest lists – but your book will be going out to 2m-4m readers, and you could sell thousands of books. Authors typically report making their money back in twenty-four hours, and enjoying sustained sales for a period afterwards also. Also keep in mind there are much cheaper sites below, if that up-front cost is too high a barrier.

It’s a little cheaper to get a freebie featured, and more expensive for higher-priced books (I don’t recommend doing the latter). My last free run generated over 37,000 downloads, just to give you an idea how many hands you can get your book into.

The biggest stumbling block with BookBub isn’t the cost, as considerable as it is, but in the difficulty of getting picked. You must apply, and BookBub says it only accepts 20% of applicants. (I’m guessing Dan Brown has a slightly better chance than that of getting accepted, so you and me are probably facing lower odds than 20%.) If you are exclusive to Amazon, or don’t have very many reviews on your book, or your presentation isn’t superb, your chances of getting picked are very slim indeed. But if you want to apply, your first step is to sign up for BookBub Partners account – which I recommend doing anyway, and populating your books on the platform so readers can discover them.

There is another way to reach this passionate audience of 10m readers – one which I’ve written a guide to called BookBub Ads Expert – and I also have some other resources like this video guide below. Generally speaking though, the BookBub Ads platform is not for beginners; I recommend they peruse the options below instead.

Free Book Promotions

Free book promotions refers to promoting a book which is free, rather than promotions which cost now money – see below for some of those. Free promos are often the easiest and cheapest to put together, and the greatest return in terms of just getting your books into readers’ hands. Here are my preferred sites in (rough) order of relative power.

Those in bold are strong recommendations for free book promos. The rest are for more aggressive pushes. Only need one? Pick Freebooksy.


Some sites are better value with freebies, other with discounts. Most only accept 99¢ deals, but that’s almost always the best way to run a discount anyway so don’t sweat it. Those in bold are strong recommendations. The rest are for more aggressive pushes. Only need one? Pick Robin Reads.

Also check the genre-specific deal sites below for further options.

Genre Specialists

These sites are recommended for both freebies and discounts, as long as your book is the right genre, of course.

Your genre isn’t listed? Hey, I feel you. But these sites are among the newer of those featured, so hopefully things will continue to develop in that manner. Some of the above are innovating in other useful ways, like allowing you to feature more than one book. Speaking of…

Series Promotions

Some book promo sites are finally offering options to push several books at once – ideal for a series. As always, bolded items are stronger recommendations.

  • Freebooksy ($65-$230)- this is a brand new promo, replacing the old series promo which wasn’t raved about. This is very different – a truly innovative series promotion that goes direct to your series page on Amazon and can drive strong sales right across your series, especially if there are multiple discounts running alongside your free Book 1. This only launched in 2020 but the results over the last year have been amazing and it has now expanded into multiple genres: thrillers, romance, horror, SF/F, paranormal, YA, and non-fiction. Strongly recommended. More on how it works.
  • EreaderIQ ($10-$25) – this is a regular free/discounted promo but they let you add mention of up to four more books (for $3 each) as long as they are $2.99 less. Other nice add-ons include being able to flag if the book is in Kindle Unlimited, a link to the audiobook, and so on. Note that the other books featured don’t strictly have to be in the same series as they are linked to directly, rather than using the series page approach of Freebooksy above.
  • BookBasset ($21.99) – this is a featured author promo where they will also let you add up to four more books of yours (included in the price), as long as they are $2.99 or less; they strongly advise at least one book is free. These can be any books from your catalog BTW, as with EreaderIQ. Note: BookBasset and EreaderIQ are owned by the same people, in case you are wondering, but they have told me that their lists were developed separately and there is little audience overlap – so you can book both.
  • BookDoggy ($18-$20) – this is also more of a regular free/discounted promo but where they let you add a mention of your series page – a cool add-on I wish was universal.

Site owners: add more series promotion options like the above! I especially like the Freebooksy approach (it’s more work for site owners, but results are amazing), but simply being able to add more books to a promotion through any means is incredibly valuable for authors. I’d love to include more series promotion options here – as long as they actually move books, of course!

List Builders

A warning: list builders are best used to augment your organic list-building efforts, not to replace them. If your mailing list needs a quick injection of fresh blood, list builders can be very useful. Just remember to use this tactic sparingly.

This is not a replacement for getting subscribers organically, or a short-cut to getting a big and healthy mailing list.

If your list is predominantly from list-builders and competitions and the like, then you might have an issue.

That said, they have their place, and I like using them strategically. These are two of the best around – and BookSweeps especially can drive strong, high-quality sign-ups.

The latter only runs list-building promos occasionally, but does do a lot of other stuff, like…

Follow Promos

Both BookSweeps and LitRing also do worthwhile BookBub Follow promos (and LitRing does occasional Amazon Follow promos. The reason I’m separating them out is you need to take the caveat from the list-builder section above and triple it here. At least with email, you know if you are carrying deadweight, and can re-engage (or cull) persistent non-openers.

There is no way to even identify deadweight in your Amazon or BookBub Follows, let alone do anything about it.

Use sparingly – I especially want to stress that here – but I think they are fine for getting your first few followers.

Money Savers

Times are tight! If you have a restricted budget, and can’t just jump on everything here, these are my top value, lower cost picks from everything available – including some freebies for you too.

Fussy Librarian – first-time users can use the code 10OFF on checkout to receive $10 off their first free book promo (making what was already good value even cheaper).

OHFB – a nice site but I don’t think the $75/$100 promos are worth the cost. However, this option is free (but there’s no guarantee of being picked).

Digital Book Today – I must try the $20 free book promo here again soon as it has been a while, but this promo is free.

And then out of the sites previously mentioned, Freebooksy is the best value for freebies if you can afford (go with ENT or Fussy Librarian if you can’t). Robin Reads and ENT vie for top spot for discounts, but BookBarbarian gives them a run for their money if you write SF/F.

The Freebooksy series promo is stellar, but it’s not that cheap. EreaderIQ has far less juice, but it’s a nice option if money is very tight, or a nice augment to Freebooksy if you have money to spread around.

Keep this in mind: I’m firmly of the opinion that it’s better to let your books slide for a while and organize a really good promotion every so often, than to be promoting all the time and using lesser value sites.

Create A Marketing Campaign

Building a marketing campaign is easy… once you know how, and once you factor in how Amazon works.

Amazon rewards consistent sellers over those which spike and collapse, so stringing together five days of consistent downloads it always desirable.

What? You want more? FINE.

Here’s my course on how to build your marketing campaigns using all these deal sites, and a few more tricks too. You will learn everything about how to promote a book from branding, packaging, and positioning, to building your list and platform, to handling a book launch or other type of promotion.

And it’s FREE!

Book Promo sites are most effective when part of a marketing plan. Learn how to build your own with this Free Marketing and Self-Publishing Course - Starting From Zero with David Gaughran


Pop your questions on book promotions in the box below. I’ll get a ping right away, and answer you once I’m finished alphabetizing my collection of fine hams.

David Gaughran

David Gaughran

Born in Ireland, he now lives in a little fishing village in Portugal, although this hasn’t increased the time spent outside. He writes novels under another name, has helped thousands of authors build a readership with his books, blogs, workshops, and courses, and has created marketing campaigns for some of the biggest self-publishers on the planet. Friend to all dogs.