Justin Duke

Founder & CEO, Buttondown · 1 appearance on the record.

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founderengineerinvestorauthor@jmduke ↗jmduke.com ↗

Justin Duke is the founder and CEO of Buttondown, an indie, markdown-friendly newsletter platform that he bootstrapped while working as a software engineer at Stripe. He is also a partner at Third South Capital, a firm that acquires and operates software products.

10statements → 4claims → 1claims resolved → 3.8/5average certainty → 1.8/5average debate potential → ≈4.5/5argument clarity, estimated →

1 supported 0 partly supported 0 contradicted 3 not checkable as stated how the 4 claims stand · each chip opens the sources

4 assertions · 2 opinions · 3 insights · 1 disclosure · every statement was checked. The predictions and assertions are the 4 claims: statements the public record can support or contradict. 1 is resolved, and 3 name no date, number or outcome precise enough to check. Everything else (opinions, insights, what ifs, disclosures) can never be settled by the record, so it carries no assessment.

The record, in short

What the tape says about how Justin argues and how the claims held up. Everything they said, and everything said about them, is in the tabs below.

Their most notable supported claim

Assertion Supported

Duke: Large merchants cannot page through Stripe's API for warehouse data

“If you're a really big merchant you can't just page through Stripe's API to get all the data you need to, like, go into a data warehouse or figure out your MRR or APRU, stuff like that.”

Justin Duke Aug 23, 2020 ▶ 2:10 ButtonDown Email Is Niche Mailchimp, Hits $5k in MRR

How they sound: not measured why? →

We measure speaking style by listening to the audio itself, and a fair number needs at least 2,000 words from one person on tape we have measured. There is too little of Justin Duke on measured tape to publish a rate. This says nothing about how they speak.

What they said10 Episodes1

Everything Justin Duke said on Top Founders that made the record, most notable first. Filter by type, assessment or year in the ledger →

Insight

Duke: Purely usage-based SaaS pricing drives superior expansion revenue and ARPU

“I think if I had to choose between the two, purely usage-based because it kind of leans into expansion revenue a bit more nicely. You're always going to have an upper bound if you do that conventional sort of like three-column SaaS pricing grid of 29 a month, …”

Justin Duke Aug 23, 2020 ▶ 4:45 ButtonDown Email Is Niche Mailchimp, Hits $5k in MRR

Opinion

Duke: Hacker News launches are hit-or-miss 'lightning in a bottle'

“I think it's more lightning in a bottle. It's, there's been a plethora of people writing about, like, how to launch on all of these news platforms, and I do think a lot of it is very hit or miss. Like, sometimes you win the lottery.”

Justin Duke Aug 23, 2020 ▶ 9:34 ButtonDown Email Is Niche Mailchimp, Hits $5k in MRR

Insight

Duke: Engineers mistakenly assume they can build better software in a weekend

“One of the worst things an engineer can say to themselves is I bet I could build a better version of this in a weekend.”

Justin Duke Aug 23, 2020 ▶ 6:54 ButtonDown Email Is Niche Mailchimp, Hits $5k in MRR

Opinion

Duke: Mailchimp and ActiveCampaign leave casual bloggers and creators underserved

“And especially for some of the very marketing-heavy tools like ActiveCampaign, like MailChimp, these are designed for folks who are sending out, you know, e-commerce blasts to potentially tens of thousands of users, and that's a very important vertical to hand…”

Justin Duke Aug 23, 2020 ▶ 7:13 ButtonDown Email Is Niche Mailchimp, Hits $5k in MRR

Assertion Not checkable as stated

Duke: Months-old Hacker News comments drive substantial Buttondown traffic

“And I still see a large proportion of my traffic coming from, you know, comments that I've made months ago on Hacker News, as long as the content is relevant and the tool itself is put into the discussion.”

Justin Duke Aug 23, 2020 ▶ 10:05 ButtonDown Email Is Niche Mailchimp, Hits $5k in MRR

Insight

Duke: Product Hunt drives launch spikes but lacks long-tail traffic

“Product hunt is much more friendly in terms of letting people kind of glom on and being very sort of positive, like the community there in general is nicer, but it's the opposite of a long tail, right? Like you're not going to be able to bring it up in a lot o…”

Justin Duke Aug 23, 2020 ▶ 11:19 ButtonDown Email Is Niche Mailchimp, Hits $5k in MRR

Disclosure

Duke: Two thirds of Buttondown revenue comes from flat SaaS tiers

“It's around two thirds comes from that flat SaaS revenue. The flat revenue is sort of the paywall for some of the premium features like custom domains, advanced analytics, that sort of thing. Whereas metered is purely based on volume. So only a third of button…”

Justin Duke Aug 23, 2020 ▶ 3:34 ButtonDown Email Is Niche Mailchimp, Hits $5k in MRR

Assertion Not checkable as stated

Duke: Buttondown's average customer pays $20 to $25 per month

“Around 20 to 25 bucks a month.”

Justin Duke Aug 23, 2020 ▶ 8:02 ButtonDown Email Is Niche Mailchimp, Hits $5k in MRR

Assertion Supported

Duke: Large merchants cannot page through Stripe's API for warehouse data

“If you're a really big merchant you can't just page through Stripe's API to get all the data you need to, like, go into a data warehouse or figure out your MRR or APRU, stuff like that.”

Justin Duke Aug 23, 2020 ▶ 2:10 ButtonDown Email Is Niche Mailchimp, Hits $5k in MRR

Assertion Not checkable as stated

Duke: Buttondown has roughly 250 to 260 paying customers

“So right now around 252 160 paying customers.”

Justin Duke Aug 23, 2020 ▶ 12:09 ButtonDown Email Is Niche Mailchimp, Hits $5k in MRR

Appearances (1)

Episode	Date	Speaking time
ButtonDown Email Is Niche Mailchimp, Hits $5k in MRR	Aug 23, 2020	7m

Justin Duke

The record, in short

Their most notable supported claim

How they sound: not measured why? →

Appearances (1)

Turn any episode into a week of clips.