How to use podcast guesting to grow your B2B business

Executive overview

Most B2B founders waste time building their own podcast instead of borrowing audiences that already exist. Guesting on established shows is faster, lower-risk, and lets you test your message before committing to production.

Mark Colgan runs Speak on Podcasts, a guest booking agency that places B2B tech execs on relevant shows and repurposes the content afterward. The conversation covers when to guest vs. host, what makes a pitch land, and how a bootstrapped agency scaled to 20 people in one year.

Podcast guesting is a brand and trust play, not a lead generation tactic — confusing the two wastes the opportunity.

Guest vs. host: when to start your own podcast

• Build an audience of your own only after appearing on 100+ other people's shows.
• Most founders want to grow a business, not become a broadcaster — guesting serves that goal more directly.
• Hosting requires deep process commitment to sustain weekly production; many underestimate this.
• Try guesting first: if you hate it, you haven't invested in infrastructure.

What makes a podcast pitch work

• Most pitches fail because they offer a guest who "can talk about 10 subjects" — hosts want one focused idea.
• Templated mail-merge outreach gets a 1–3% conversion; personalisation gets a much higher rate.
• Effective pitches reference a previous guest or episode and suggest a single specific topic tied to that show's audience.
• Volume alone is not a strategy — it risks damaging your client's brand at scale.

The Speak on Podcasts model

• Acts as a talent agency for B2B tech execs: research, outreach, booking, and optional content repurposing.
• Sells a package of 24 podcast appearances over six months.
• Clients only need to show up and speak; the agency manages the rest.
• Repurposes episode clips into social posts and blog content using tools like Subbly for subtitles.
• Turns down prospects who want podcast guesting purely for lead gen — wrong use case.

Practical setup for podcast guests

• Microphone is the single most important investment; even a $100 USB mic makes a significant difference.
• Lighting: face a window, never sit with a window behind you.
• Use the Camo app to turn an iPhone into a high-quality webcam.
• Align camera height with eye level — a selfie stick mounted to your monitor improves eye contact.
• Prepare by listening to at least one previous episode; know the format and any rapid-fire segments.
• Have 3–5 go-to stories ready that illustrate your core idea with specific detail.

Growing a bootstrapped agency fast

• Reached 20 full-time employees in one year without VC funding, scaling in a "sensible, sustainable" way.
• Key hiring challenge: knowing whether to hire ops, project management, or HR at each stage.
• Used an external HR consultant rather than a full-time hire — lower cost, faster results.
• Processes documented in Trainual for onboarding; Sweet Process for ongoing checklist management.
• Target: $1M monthly revenue before considering structural changes.

Scaling without breaking quality

• Fast customer growth (10 new clients in one month) broke existing processes — systems weren't ready.
• Now stress-testing ahead of growth: if client count doubles, outreach logging must be airtight to avoid contacting the same podcasts twice.
• Principle: break things intentionally in small increments, fix them, then scale — don't build elaborate systems before customers arrive.
• The "build it and they will come" approach produces systems that don't match how customers actually use the product.

Founder strengths and the trusted advisor posture

• 66% close rate on discovery calls by treating every interaction as a conversation, never a pitch.
• Actively disqualifies prospects whose goals don't fit the service — protects long-term reputation.
• Quality standard applied uniformly: "how you do one thing is how you do everything."
• Surrounding themselves with experienced advisors, including someone who built and sold an agency for hundreds of millions.