Jimmy KimCEO & Founder, Commerce Roundtable · Marketer of 17+ Years, 4x Founder. Former DTC/Retailer & SaaS Founder. Newsletter. Host of ASOM & Send it! Podcast. DTC Event: Commerce Roundtable

Welcome Series: Why 85% of Sales Happen on Day One

16 Jul 2026 · 1 min

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1:11

In this video, Jimmy Kim presents aggregated email‑marketing data from roughly 40 brands and 4,000 campaigns, revealing that 85% of prospects who eventually purchase do so on the first day (day 0) after receiving a welcome email. Conversion rates then tumble dramatically—dropping to just under 3% by day 1 and falling below 1% by day 7. Using this evidence, Kim argues that marketers should concentrate their efforts on immediate outreach, recommending a “double send” on day 0 rather than investing heavily in extended welcome‑series follow‑ups. He cites a comment from Max at a New York event that supports the double‑send tactic, and notes that supporting slide decks are available on the channel for further reference.

Chapters

One of the biggest things that I think that I already knew, but this was the biggest lesson I took away from this one that you definitely want to watch the replay on this one. But they had to hide this. If you look down here, Chase, it's probably a little small right now, but it says day 0 was 85%. Based on this data, right? 40 brands doing 4,000 campaigns. They are saying that 85% of people, prospects, people who've never purchased, 85% of them purchased within the first day, meaning the day 0. After day 1, you drop to almost less than 3% of conversion. Huh. I mean, you and I knew this already, but it was kind of shocking to see that we're under 1% by day 7. So we talk about like, oh, follow-up series and people are spending way too much time working on their welcome series. This is proven evidence. In fact, it was Max on another day, on day 1 of New York that we were talking about. He talked about the double send on day 0, and it was a very obvious thing because if you look in this data, it backs it up. Because if 85% of your sales are going to happen on day 0, you might as well send an extra email on day 0 because what are you going to really hurt? Think about the data that comes into place. So this was one of my favorite talks that we have. Again, you can go through it. There's so much good valid information behind this. And again, you can get a handle— a hold of all these decks when we have them out. They're all on the YouTube channel.