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The Colin and Samir Show

The Business of Email: How Substack Changed Everything

The Colin and Samir Show

Colin and Samir

Business

4.9703 Ratings

🗓️ 5 November 2025

⏱️ 44 minutes

🧾️ Download transcript

Summary

You probably don’t think of your inbox as part of the creator economy, but email is a big business, and Substack is leading the charge. In this episode, Colin and Samir sit down with Rachel Karten, writer of the Substack newsletter Link in Bio, which covers the world of social media and has grown to more than 105,000 subscribers. Rachel left her role at Bon Appétit to build her own business as an independent creator, and today she earns income through paid subscriptions and brand partnerships on Substack. Colin, Samir and Rachel break down how email newsletters became one of the most powerful tools in the creator economy and why Substack’s model of direct audience ownership is changing how writers, journalists, and creators make a living. Learn more about your ad choices. Visit megaphone.fm/adchoices

Transcript

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0:00.0

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0:32.2

You probably don't think about your inbox as part of the creator economy, But sending emails is actually a billion-dollar business.

0:40.8

And that business is being led right now by one platform, Substack. Talk to us about what you have to

0:46.7

offer readers and journalists at such a tumultuous time in the news business. So what Substack is

0:53.6

offering is an alternative business model where readers subscribe directly

0:58.5

to writers they trust and they pay them directly, which means that they are ultimately

1:04.0

the customer, they sort of, you know, hire and fire the writers that they trust.

1:09.7

And it's kind of an alternate ecosystem to add supported social media as we know it.

1:14.8

So here's an interesting stat.

1:15.9

Substack now has over 50,000 revenue generating newsletters with more than 50

1:21.3

newsletters making over a million dollars a year through paid subscriptions.

1:25.5

Substack's monetization model is pretty simple.

1:27.4

They take 10% of a newsletter's paid subscription revenue and the writer gets to keep 90%.

1:32.3

And in exchange for that revenue share of substack provides publishing tools as well as discovery and growth.

1:38.3

It's an ecosystem that gives economic autonomy to independent voices.

1:47.5

And it fosters direct relationships that are built on trust instead of just putting everyone at the mercy of algorithms

1:51.0

that maximize engagement and advertising revenue.

1:54.7

So we've been hearing so much about Substack

...

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