The 3-Sentence Cold Email Framework From a YC Partner That Gets Investor Replies

Michael Seibel is the CEO of Y Combinator and one of the most read voices on early-stage fundraising. He has reviewed thousands of founder pitches and cold emails. His advice on cold email is counterintuitive: write less.

Not a shorter version of a long pitch. An email that is three sentences, period.

Here is the framework, the reasoning behind it, and the example he published.

The Three Sentences

Sentence 1 — What you do, in plain English.

No jargon. No industry buzzwords. One sentence that a non-expert could read and immediately understand.

"My company Twitch for cooking lets people watch and participate in live cooking shows from professional chefs."

Sentence 2 — One signal.

The single most credible thing about your company right now. If you have revenue, use revenue. If you have notable users, use them. If you have exceptional team credentials, use those. One thing. The most impressive thing you have.

"We have 10,000 active daily users and are growing 15% week over week."

If you're pre-launch: the signal might be team credentials, a notable backer, or a specific domain insight. But it must be specific.

Sentence 3 — The ask.

Seibel recommends asking for advice, not a meeting or investment. Lower bar. More replies. And it starts a genuine relationship rather than a transaction.

"I'd love your thoughts on whether we should build out private messaging before launch."

The Full Example He Published

Seibel published this example email on his blog:

> "Hey Michael, My name is Tim and I'm building Twitch for cooking. I previously ran programming at the Food Network and my technical co-founder is a college friend. We're working on our MVP and were wondering whether we should build out private messaging in addition to group chat or just group chat alone. Thanks, Tim"

This email has no explicit fundraising ask. It asks for advice on a product decision.

And yet it communicates everything an investor needs to make an initial assessment:

• What the company does (Twitch for cooking)
• Why this founder (Food Network background = domain expertise)
• Stage (MVP in progress)
• That the founder thinks carefully about product tradeoffs

If the investor finds this interesting, the response is easy: "I have thoughts on that — want to set up a call?" The investor has made the choice to escalate. That's a much higher-quality next step than a founder demanding a meeting.

Why Three Sentences

The reasoning behind Seibel's framework is not aesthetic. It's strategic.

Investors read cold emails in seconds, not minutes. A three-sentence email can be read completely in the time it takes to decide whether to reply. A 200-word email requires a decision to invest more time before you even know if it's worth it.

Longer emails signal lower confidence. A founder who needs 400 words to explain their company hasn't yet figured out what their company is. A founder who can explain it in three sentences has done the intellectual work.

The ask determines the quality of the reply. "Can we meet?" is easy to ignore — it's the same ask every cold email makes. "What do you think about X?" is specific, conversational, and requires a substantive response. That substantive response is the beginning of a relationship.

The goal of a cold email is not to raise money. The goal is to get a reply. The reply is the beginning of the process that eventually leads to investment. Optimizing the email for the reply — not for the pitch — is the right frame.

When Three Sentences Isn't Enough

Seibel's framework is for the first email. It works best when:

• You have no prior relationship with the investor
• You're at an early stage where a long pitch would be premature
• You're reaching out to a very busy person (top-tier VC, prominent angel)

For investors you've spoken to before, or for later-stage raises where the investor needs more context, a longer email is appropriate. Jason Lemkin's preference — 150–200 words with at least two concrete metrics — is the right target when you have revenue and are raising a meaningful round.

The three-sentence framework is the opening bid when the relationship doesn't yet exist and brevity is the price of getting read.

What YC Says About Cold Outreach Generally

YC's official position: "A warm introduction provides no advantage in the YC selection process. Applications are judged on their own merits."

This extends to investor outreach at YC. Many YC partners have said publicly that they read and reply to cold emails when the founder communicates clearly.

Seibel's three-sentence framework is the minimum viable version of that communication. It gets you read. The reply gets you in the conversation. The conversation gets you the meeting. The meeting gets you the check.

Don't skip to the end. Start with three sentences.