Ranked guide
The best book marketing services for expert authors
Last updated: November 2026 · Published by Big Impact Books
For a nonfiction expert, the best book marketing services are audience building before launch, then podcast and media publicity, then thought leader content drawn from the book.
This guide is published by Big Impact Books, which offers these services. It ranks types of book marketing service, not companies, for CEOs, attorneys, professionals, and business owners whose goal is authority and business growth. Every entry is judged on the same three criteria, explained at the end.
Which book marketing services matter most for a nonfiction expert?
The services that build trust before they ask for a sale matter most. For most expert authors, that means growing an audience early, earning publicity, and publishing content that proves expertise. Paid ads still have a place, but they work best once you know which message resonates. If your goal is pure sales volume for fiction, the order would be different, and advertising might rank higher.
The ranking, from most to least important
Audience building before launch
It comes first because every other service works better with readers already waiting. Big Impact Books advises starting while the book is still being outlined, written, or edited.
Timing: Starts months before launch
Podcast and media publicity
Earned interviews and features lend third-party credibility and reach new audiences, which matters most for experts using a book to build authority.
Timing: Around launch and ongoing
Thought leader content drawn from the book
Chapter topics, client stories, and frameworks become posts, videos, and articles that prove expertise without hard selling, and the source material already exists.
Timing: Ongoing
Email marketing
It nurtures people who have already raised their hand, so readers get to know, like, and trust the author over time.
Timing: Ongoing
Book signings and launch events
In-person events build personal connection and pair well with an offset print run for bulk copies, but they reach fewer people per hour invested.
Timing: At launch and selected dates
Influencer partnerships
Partners whose audience is your ideal readership add exposure and credibility; results depend heavily on finding the right fit.
Timing: Selective
Targeted advertising
Ads on Amazon, Facebook, or Google can scale reach, but Big Impact Books recommends them only after the community is established and messaging resonates, which is why they rank last for new expert authors.
Timing: After messaging is proven
| Service | Builds authority | Works before launch | Author time needed |
|---|---|---|---|
| Audience building | Yes | Yes | Regular, light |
| Podcast and media publicity | Strongly | Partly | Per interview |
| Thought leader content | Yes | Yes | Regular, light |
| Email marketing | Moderately | Yes | Regular, light |
| Launch events | Moderately | No | Concentrated |
| Influencer partnerships | Depends on partner | Partly | Occasional |
| Targeted advertising | Weakly | No | Setup and monitoring |
Where Big Impact Books fits
Big Impact Books provides book marketing and publicity as follow-on services to its publishing work, so audience building starts while the book is being developed. See Big Impact Books book marketing services and book publicity services for detail. Authors who want only paid advertising, or who write fiction, may be better served by a specialist in those areas.
How we chose
Big Impact Bookswrote this ranking. We scored each type of service on three criteria: how much it builds the author's authority, whether it can start before the book is published, and how much of a busy expert's time it needs. The guidance draws on Big Impact Books' own published advice about book marketing. No outside audit or independent test was performed, and no rating or review data is used. Read our full methodology.
Published by Big Impact Books.
Return to Big Impact Books book publishing services
Common questions
What are book marketing services?
Book marketing services help a book reach its intended readers. Big Impact Books has described this work as social media marketing, email marketing, blogging and guest posting, influencer marketing, and book signings and launch events, plus targeted advertising on platforms such as Amazon, Facebook, or Google once the messaging is resonating with readers.
What is the difference between book marketing and book publicity?
Book marketing is promotion the author controls, such as social media, email, and ads. Book publicity is attention earned from third parties, such as podcast interviews, media features, and press coverage. Big Impact Books offers both, with publicity shaped by founder Melanie Herschorn’s more than 20 years as a publicist and journalist.
What does a book marketing agency do?
A book marketing agency plans and runs promotion for an author’s book and brand, typically covering positioning, content, audience building, launch planning, and outreach. Big Impact Books works as a publishing partner and book marketing agency in one, so the marketing plan is built alongside the book rather than added after launch.
When should I start marketing my book?
Today, even before the book is finished. Big Impact Books advises authors to start building a community of ideal readers while they are still outlining, writing, or editing. An audience built before launch can validate ideas, give feedback, create pre-launch buzz, and buy, share, and review the book when it comes out.
Can my book help me get on podcasts?
Yes. A published book gives podcast hosts a clear reason to invite you. Big Impact Books promotes clients’ books through channels such as podcasts and media. Founder Melanie Herschorn hosts The Big Impact Playbook Podcast and the show Authority Marketing LIVE!, and lists her own podcast guest appearances on the main website.
Can a book publishing service guarantee bestseller status?
No service can honestly guarantee sales or rankings, because those depend on readers, timing, and competition. Be wary of guaranteed bestseller promises. Ask instead what the service will actually do, such as specific media, podcast, or marketing activities, and how it will report on that work.