How to Build an Author Platform Before Your Book Is Done

The word “platform” makes writers uncomfortable. It sounds like a performance — and most writers became writers to avoid performing.

Reframe it: a platform is simply the audience of people who already trust you. Agents and publishers want to know that trust exists before they invest in your book.

Start before you need it

This is the point most writers miss. Building an audience takes time — often years. Waiting until your book is done means launching into silence.

Pick one channel and own it

You don’t need to be everywhere. A writer with 3,000 genuinely engaged newsletter subscribers beats one with 30,000 passive Instagram followers every time. Depth matters more than breadth.

The best platforms for authors right now:

• Email newsletter — the highest-conversion channel. You own the list. Substack, Mailchimp, and Kit (formerly ConvertKit) all work well.
• Substack — doubles as newsletter and social discovery; good for essay-forward writers
• TikTok/BookTok — high ceiling for genre fiction; requires consistent video output
• Instagram — declining reach but still useful for visual genres and lifestyle-adjacent nonfiction

What to post

Write about what you know. If your book is about grief, write about grief — not just about writing. You’re building an audience for your ideas, not your manuscript.

Share your process honestly. Readers connect to writers who show the work, including the difficulty of it.

The number agents actually care about

For nonfiction, platform is everything — 10,000+ newsletter subscribers can make a deal. For fiction, it matters less but still signals that you’re a professional building a career, not a one-book gamble.

Start today. A small, consistent presence compounds over time.