--- schema: 1 type: video title: >- He Built an AI App With 10,000 Signups in 1 Month - Ep. 44 w/ Kieran Klaassen, Brandon Gell description: >- Building an email client used to take many years and millions of dollars. But Every’s Kieran Klaassen built Cora (https://cora.computer)—a totally new way to manage your inbox with AI—in just 3 months. He even shipped the original MVP of the product in a single day—something that just wasn’t possible before the current state of generative AI. Now, there are almost 10,000 people on the waitlist for Cora, and we’re onboarding new users every single day. Every’s head of Studio Brandon Gell and I worked closely with Kieran as he built Cora, and to kick off my podcast, AI and I, in 2025, I invited both of them on the show to talk about it. We go behind the scenes, getting into: - How Kieran built the product with Cursor, o1, and o1 Pro - What we’re learning as we onboard new users every day - The future of Cora and of Every as a multi-modal media company This is a must watch for anyone curious about our approach to building with AI at Every. If you found this episode interesting, please like, subscribe, comment, and share! Want even more? Sign up for Every to unlock our ultimate guide to prompting ChatGPT here: https://every.ck.page/ultimate-guide-to-prompting-chatgpt. It’s usually only for paying subscribers, but you can get it here for free. To hear more from Dan Shipper: Subscribe to Every: https://every.to/subscribe Follow him on X: https://twitter.com/danshipper Timestamps: 00:00:00 - Episode start 00:01:56 - Introduction 00:02:33 - How the maker of Cora describes the product 00:06:31 - Our first mistake while building Cora 00:09:37 - The story of how Kieran shipped the first MVP overnight 00:13:44 - Why Dan believes software is becoming content 00:16:40 - Products with a point of view will win 00:19:16 - How Kieran approaches building a new product 00:31:55 - Best practices while using Cursor 00:41:05 - Hacking together a copy editor in Cursor live on the show 00:53:58 - The future of Cora, and the hardest challenge we face today Links to resources mentioned in the episode: Sign up for the Cora waitlist: https://cora.computer/ Learn more about Cora: Introducing Cora: Manage Your Inbox With AI Kieran Klaassen: @kieranklaassen Brandon Gell: @bran_don_gell canonical: >- https://liquidgold.cc/channel/everyinc/explore/video/he-built-an-ai-app-with-10-000-signups-in-1-month-e-2f421f002616 markdown: >- https://liquidgold.cc/channel/everyinc/video/he-built-an-ai-app-with-10-000-signups-in-1-month-e-2f421f002616.md llms: null parent: 'https://liquidgold.cc/channel/everyinc.md' channel: everyinc updated: '2026-10-24T01:10:14.604Z' language: null children: [] videoId: MhKKKBG28a4 durationSeconds: 4522 publishedAt: '2025-01-15T15:27:32.000Z' searchChunks: - ordinal: 0 text: null startSeconds: 164 endSeconds: 396 watch: 'https://liquidgold.cc/watch/MhKKKBG28a4?t=164' heldReason: rights - ordinal: 1 text: null startSeconds: 406 endSeconds: 585 watch: 'https://liquidgold.cc/watch/MhKKKBG28a4?t=406' heldReason: rights - ordinal: 2 text: null startSeconds: 595 endSeconds: 832 watch: 'https://liquidgold.cc/watch/MhKKKBG28a4?t=595' heldReason: rights - ordinal: 3 text: null startSeconds: 595 endSeconds: 832 watch: 'https://liquidgold.cc/watch/MhKKKBG28a4?t=595' heldReason: rights - ordinal: 4 text: null startSeconds: 1168 endSeconds: 1265 watch: 'https://liquidgold.cc/watch/MhKKKBG28a4?t=1168' heldReason: rights - ordinal: 5 text: null startSeconds: 1373 endSeconds: 1487 watch: 'https://liquidgold.cc/watch/MhKKKBG28a4?t=1373' heldReason: rights - ordinal: 6 text: null startSeconds: 1497 endSeconds: 1601 watch: 'https://liquidgold.cc/watch/MhKKKBG28a4?t=1497' heldReason: rights - ordinal: 7 text: null startSeconds: 1601 endSeconds: 1611 watch: 'https://liquidgold.cc/watch/MhKKKBG28a4?t=1601' heldReason: rights - ordinal: 8 text: null startSeconds: 1736 endSeconds: 1841 watch: 'https://liquidgold.cc/watch/MhKKKBG28a4?t=1736' heldReason: rights - ordinal: 9 text: null startSeconds: 1852 endSeconds: 1918 watch: 'https://liquidgold.cc/watch/MhKKKBG28a4?t=1852' heldReason: rights - ordinal: 10 text: null startSeconds: 2147 endSeconds: 2230 watch: 'https://liquidgold.cc/watch/MhKKKBG28a4?t=2147' heldReason: rights - ordinal: 11 text: null startSeconds: 2333 endSeconds: 2344 watch: 'https://liquidgold.cc/watch/MhKKKBG28a4?t=2333' heldReason: rights - ordinal: 12 text: null startSeconds: 2567 endSeconds: 2666 watch: 'https://liquidgold.cc/watch/MhKKKBG28a4?t=2567' heldReason: rights - ordinal: 13 text: null startSeconds: 2903 endSeconds: 2992 watch: 'https://liquidgold.cc/watch/MhKKKBG28a4?t=2903' heldReason: rights - ordinal: 14 text: null startSeconds: 3003 endSeconds: 3092 watch: 'https://liquidgold.cc/watch/MhKKKBG28a4?t=3003' heldReason: rights - ordinal: 15 text: null startSeconds: 3102 endSeconds: 3239 watch: 'https://liquidgold.cc/watch/MhKKKBG28a4?t=3102' heldReason: rights - ordinal: 16 text: null startSeconds: 3344 endSeconds: 3453 watch: 'https://liquidgold.cc/watch/MhKKKBG28a4?t=3344' heldReason: rights - ordinal: 17 text: null startSeconds: 3558 endSeconds: 3669 watch: 'https://liquidgold.cc/watch/MhKKKBG28a4?t=3558' heldReason: rights - ordinal: 18 text: null startSeconds: 3679 endSeconds: 3771 watch: 'https://liquidgold.cc/watch/MhKKKBG28a4?t=3679' heldReason: rights - ordinal: 19 text: null startSeconds: 3782 endSeconds: 3881 watch: 'https://liquidgold.cc/watch/MhKKKBG28a4?t=3782' heldReason: rights - ordinal: 20 text: null startSeconds: 4099 endSeconds: 4109 watch: 'https://liquidgold.cc/watch/MhKKKBG28a4?t=4099' heldReason: rights - ordinal: 21 text: null startSeconds: 4341 endSeconds: 4465 watch: 'https://liquidgold.cc/watch/MhKKKBG28a4?t=4341' heldReason: rights --- # He Built an AI App With 10,000 Signups in 1 Month - Ep. 44 w/ Kieran Klaassen, Brandon Gell Building an email client used to take many years and millions of dollars. But Every’s Kieran Klaassen built Cora (https://cora.computer)—a totally new way to manage your inbox with AI—in just 3 months. He even shipped the original MVP of the product in a single day—something that just wasn’t possible before the current state of generative AI. Now, there are almost 10,000 people on the waitlist for Cora, and we’re onboarding new users every single day. Every’s head of Studio Brandon Gell and I worked closely with Kieran as he built Cora, and to kick off my podcast, AI and I, in 2025, I invited both of them on the show to talk about it. We go behind the scenes, getting into: - How Kieran built the product with Cursor, o1, and o1 Pro - What we’re learning as we onboard new users every day - The future of Cora and of Every as a multi-modal media company This is a must watch for anyone curious about our approach to building with AI at Every. If you found this episode interesting, please like, subscribe, comment, and share! Want even more? Sign up for Every to unlock our ultimate guide to prompting ChatGPT here: https://every.ck.page/ultimate-guide-to-prompting-chatgpt. It’s usually only for paying subscribers, but you can get it here for free. To hear more from Dan Shipper: Subscribe to Every: https://every.to/subscribe Follow him on X: https://twitter.com/danshipper Timestamps: 00:00:00 - Episode start 00:01:56 - Introduction 00:02:33 - How the maker of Cora describes the product 00:06:31 - Our first mistake while building Cora 00:09:37 - The story of how Kieran shipped the first MVP overnight 00:13:44 - Why Dan believes software is becoming content 00:16:40 - Products with a point of view will win 00:19:16 - How Kieran approaches building a new product 00:31:55 - Best practices while using Cursor 00:41:05 - Hacking together a copy editor in Cursor live on the show 00:53:58 - The future of Cora, and the hardest challenge we face today Links to resources mentioned in the episode: Sign up for the Cora waitlist: https://cora.computer/ Learn more about Cora: Introducing Cora: Manage Your Inbox With AI Kieran Klaassen: @kieranklaassen Brandon Gell: @bran_don_gell Canonical: https://liquidgold.cc/channel/everyinc/explore/video/he-built-an-ai-app-with-10-000-signups-in-1-month-e-2f421f002616 · Channel: [Every](https://liquidgold.cc/channel/everyinc.md) > Search chunk text is held until public-source provenance is verified. ## Document chunks > Missing: no stored document chunks are available.