Cold pitch to a host (you're not yet known to them)
Listed listener of their podcast for months. They don't know you yet.
Have been listening to [podcast name] for [time period]. [Specific reference to a recent episode — show you actually listen]. Wanted to pitch myself as a guest. Specific angle: [Topic]: [Specific angle most guests in your space haven't covered]. Why this for your audience: [Specific reason it fits their listener profile]. Quick credibility: [Your relevant credential — audience size, company stage, specific work]. If interesting, happy to share 3 specific questions I'd answer. If not, ignore — I'll keep listening.
Why this works
Proof-of-listening (specific episode reference) is the differentiator. Specific angle + audience fit + credibility in 3 short lines. 'Share 3 questions' is a soft commitment that lets the host see your content.