Short answer: Jordan Metzner says podcasts are syndicated through RSS, which supports an email address, so almost all feeds list one. He noticed after a podcast ranking service with a $10 a month subscription emailed him.
Watch this answer from Episode 3 (starts at 2:02) · Episode 3 notes and transcript
From Episode 3: Auto-Marketing for Podcasts? Let’s Build It!, starting at 2:02.
Jordan Metzner [2:02]: So, let me give you a just a quick background. We started this podcast just a few weeks ago. I've never had a podcast before. Don't know that much about podcasts. But I got an email from a website that says, like, your podcast is ranking. Like, click here to check out the charts. And I clicked on the website and has a free trial, and then, they have, like, a $10 a month subscription or something like that. And it got me thinking kinda how did this guy get my email address already and started to think about, like, what the whole process was. And I don't know if you know this, but podcasts are syndicated using RSS. And RSS is kind of an older technology that used to be used, for a lot of news syndication, and it's been most extinct, honestly, except for in the podcast world. So, anyway, RSS is like a URL system where you can broadcast out your feed of episodes, and that's what's used by most of the podcast systems in order to get the new episodes as they come out. Well, supported within RSS is an email address, which is, like I guess, like, maybe wasn't previously supported, but is supported, and I don't know as of when. But like I said, not an expert in kind of RSS podcasting. But long story short, in all these RSS feeds or almost all of them, there's a list of email addresses. And so, I saw this site.
Jordan Metzner [3:16]: I saw what it did. I kinda saw this thing, and I thought, like, okay. Well, like, what do I wanna do? I wanna promote our podcast, and I initially wanna promote our podcast with, like, other business podcasts. And I wanna tell them about our podcast in a way that shows that I listen and know about their podcast, and I wanna get their contact information.
