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Sam Seely
@samseely
founder + ceo @knocklabs
New York City
knock.app
Joined April 2009
996
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1,679
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  • Pinned
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    Sam Seely
    @samseely
    Mar 5
    Today we’re launching Knock agents. Never send a generic welcome email again. Bring AI models into your messaging workflows to personalize every message you send. Available today. Knock on.
    00:00
    2.2K
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    Sam Seely
    @samseely
    Feb 28, 2023
    The Minnesota department of transportation ran a snowplow naming contest and the results are v good
    637K
  • user avatar
    Sam Seely
    @samseely
    Mar 17, 2022
    After 9 months in private beta, today we are *very* excited to officially launch Knock. TL;DR: We built product notifications so you don’t have to. A quick thread 👇
    Knock | Customer engagement infrastructure
    Knock | Customer engagement infrastructure
    From knock.app
  • user avatar
    Sam Seely
    @samseely
    Feb 15, 2024
    🔥 Announcement time🔥 I’m excited to share Knock’s $12M Series A led by Craft Ventures. David Sacks is joining our board. Quick thread on what we’re building and where we’re going from here. 👇
    241K
  • user avatar
    Sam Seely
    @samseely
    Jul 3, 2025
    Replying to @branmcconnell @vercel and @rauchg
    Hey Brandon — jumping in here for Vercel. I’m CEO of Knock. We help Vercel send these emails. In the case above, the subdomain we use for link tracking was poisoned resulting in some of Vercel’s emails going to spam. We started seeing reports of Vercel emails going to spam on
    status.knock.app
    Issues with tracked links being flagged as malicious - Knock Status
    This incident has now been resolved and the service is now fully operational.
    8.3K
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    Sam Seely
    @samseely
    Dec 9, 2022
    The @linear swag we need this holiday season
  • user avatar
    Sam Seely
    @samseely
    Dec 16, 2022
    Some news I’ve been wanting to share for a while: Knock is now powering @vercel notifications in production 🚀 The Vercel team has been incredible to work with (as you’d expect) and their feedback has pushed our product to another level LFG
    user avatar
    Knock
    @knocklabs
    Dec 16, 2022
    When one of your favorite products becomes a customer 🔥 Now proudly powering notifications at scale for @Vercel vercel.com/blog/building-…
    19K
  • user avatar
    Sam Seely
    @samseely
    Feb 5, 2021
    Today is my last day at @Frame_io. Over the past three years I've had the opportunity to work with a great team on a fantastic product that users loved. A dream come true 🙏 So what's next? I'm starting a company of my own! More to come soon—stay tuned
  • user avatar
    Sam Seely
    @samseely
    Nov 21, 2022
    This @linear inbox easter egg 🤩
    00:00
  • user avatar
    Sam Seely
    @samseely
    Jun 10, 2016
    Really want to know what audiobook this guy is listening to.
  • user avatar
    Sam Seely
    @samseely
    Dec 12, 2023
    We have THREE new hires starting at Knock today Our first ever *official* cohort of new hires and they're all incredible 💥
    5.7K
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    Sam Seely
    @samseely
    Feb 28, 2023
    Replying to @samseely
    This is the kind of innovation we need to start seeing from NYC DOT
    12K
  • user avatar
    Sam Seely
    @samseely
    Mar 23, 2025
    Ten years in NYC today. I moved here and thought I’d stay for two, three years tops. Then met my wife on the subway, made a lot of great friends, started a company, had two kids. Greatest city in the world. 🗽
    00:00
    2K
  • user avatar
    Sam Seely
    @samseely
    Mar 10, 2016
    Most startup employees (myself included) don't understand their equity. This @eshares post is a great way to start blog.esharesinc.com/understand-you…