How to Run a Cold Email Campaign Targeting YC Companies Using PostHog in 2026 — With a 3-Touch Sequence You Can Steal

How to Run a Cold Email Campaign Targeting YC Companies Using PostHog in 2026 — With a 3-Touch Sequence You Can Steal

Quick Answer: You used Origami to build a list of YC-backed startups using PostHog. Now, instead of exporting to another tool, launch the full campaign with Origami’s built-in Email sequencer — the same platform that built the list. This guide walks you through refining that list, deploying a 3-touch sequence you can copy-paste, and sending it all from one dashboard.

→ This is Part 2 of a two-post guide. If you haven’t yet built the prospect list, first read how to build a list of YC Companies Using PostHog. That post shows you how to use a single plain-English prompt inside Origami to generate a targeted list of YC startups that rely on PostHog for product analytics. The rest of this guide assumes you have that list ready inside your Origami account.

What makes this approach different? You never leave Origami. From first search to sending the last breakup email, the tool handles list building, contact enrichment, verification, and multi-step sequencing. That means no CSV exports, no syncing with a separate email platform, and no data decay between tools. For anyone selling into the YC ecosystem — where speed, precision, and personalization kill — this unified workflow is a force multiplier.

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Step 1 – Build the List in Origami (Quick Refresher)

Even though your list is already built, it’s worth revisiting the prompt you’d use to generate it. The exact prompt determines the fit of every lead in your sequence, so every word matters.

For a campaign targeting YC companies that use PostHog, your Origami prompt could be:

“Find YC-backed B2B SaaS startups with 5–50 employees that use PostHog, have a US-based team, and show me people with titles like Co-founder, VP of Growth, Head of Product, or CEO.”

Hit “Search,” and Origami’s AI agent goes to work. It searches the live web, chains multiple data sources, enriches company information, and returns a table of contacts — each with a verified name, email address, phone number (when available), job title, and company details like industry, location, funding stage, and tech stack. Crucially, because you specified “use PostHog,” the agent identifies and confirms PostHog in the company’s technology profile. That way, you aren’t just guessing — every lead is someone who actually operates inside a product-led environment powered by PostHog.

If you're trying Origami for the first time, the free plan gives you 1,000 enrichment credits with no credit card required. That’s enough to build a list of 50–100 verified prospects and send your first sequence. Paid plans start at $29/month and include the full sequencer (sending emails costs nothing extra — you only pay for the credits used to enrich leads).

Now, assume your list is sitting in Origami. The next step is to turn a raw set of contacts into a campaign-ready audience.

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Step 2 – Refine and Qualify the List Before You Send

A list of 200 YC-backed PostHog users is a starting point, not a campaign. You need to weed out bad fits and segment the good ones. This step is where most cold email fails — people blast everyone on a list and wonder why reply rates are 1%. Here’s how to do it right.

Review and Remove Obvious Misfires

Open your list inside Origami’s lead view. Scroll through and look for:

• Wrong roles. If you’re selling a product that bridges PostHog data to outbound sales, a Junior Developer is unlikely to care. Your targets are growth, product, and founder roles. Remove any contact whose title clearly doesn’t match the decision-making persona.
• Unverified emails. Origami marks email verification status (valid, risky, unknown). For a cold campaign, only keep contacts with a “valid” status. Sending to risky emails will tank your deliverability.
• Stock or duplicate domains. If the same company appears multiple times with different contacts, keep only the most senior one — or the one most aligned with your message. You can always add more in the second campaign.

Segment by the Right Lenses

For YC + PostHog, three segments typically matter:

1. Company size. A 5-person startup behaves differently from a 30-person team. You might want to split them into “Seed / pre-series A” (YC batch from the last 1–2 years) and “Growth stage” (companies that have raised a seed or A round and are scaling). Origami’s filters make this easy — slice by employee count or funding data.
2. Role focus. Create separate segments for “Head of Growth / VP of Growth” and “Head of Product / CPO.” The growth role cares about pipeline; the product role cares about data activation. Your messaging will shift slightly for each (I’ll show you how in the sequence).
3. Location or batch. If you’re limited by timezone for live demos, filter by city or region. Or segment by YC batch year if a certain cohort is more likely to need your solution.

You can apply these filters directly in Origami’s list view and save them as dynamic segments. That way, your campaign audience is locked and you can see exactly how many contacts are in each bucket.

What “Qualified” Looks Like for This Audience

A qualified lead is a person at a YC company who:

• Currently uses PostHog (confirmed by Origami’s tech stack enrichment)
• Holds a role with direct influence over growth or product-led sales
• Works at a company between 6 and 50 people (any smaller and they likely don’t have dedicated outbound; any larger and you’re competing with an established sales org)

In practice, that means you might end up with 70–100 contacts out of an initial list of 180. That’s a solid campaign size. Don’t try to inflate the numbers — narrow targeting is what gives you reply rates worth bragging about.

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Step 3 – Create the Email Sequence (Two Ways)

Here’s the part you came for: the actual emails. Origami gives you two options, and both work without leaving the platform.

• Option 1 – Paste your own templates. Write your own 3-touch sequence (subject lines, body copy) directly into Origami’s sequence builder. Set the delays between each touch — for example, Day 1, Day 3, and Day 7 — and hit “Launch.” The sequencer will send each step automatically to your entire list.
• Option 2 – Let the AI agent write it for you. With one prompt, you can ask Origami’s agent to generate a personalized 3-day email sequence based on each lead’s profile data — title, company name, industry, tech stack. The agent writes messages that feel custom, and you can review and tweak them before sending. This is a huge time saver when you want hyper-personalization at scale.

In this guide, I’m giving you Option 1 — a complete, ready-to-steal 3-touch sequence. You can copy-paste these templates straight into Origami’s sequencer, replace the company name and value prop with your own, and send them today.

The Context for These Messages

To make the copy realistic, I’ll write from the perspective of a fictional company called GrowthBridge, which offers a product that turns PostHog user behavior data into a qualified sales pipeline. You’ll swap “GrowthBridge” and the value description for whatever you’re selling. The important part is the structure, the references to YC and PostHog, and the brevity — these are emails that YC founders actually read.

Full 3-Touch Sequence (Copy-Paste Ready)

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Day 1 – Initial Cold Email

Subject: PostHog data + YC growth Preview text: a way to turn that product intelligence into revenue in a week

Hey ,

Saw that is using PostHog to power product analytics — smart move at the YC stage. Most YC teams I talk to are drowning in product data but struggle to turn it into qualified sales conversations.

We built GrowthBridge to fix exactly that: it bridges your PostHog behavioral data to your outbound pipeline, so your team acts on real intent, not just contact lists.

A batch W22 company ran it and added $60K in pipe in 3 weeks. Worth a quick 15-minute call?

Cheers,

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Day 3 – Follow-Up (Different Angle)

Subject: Re: PostHog data Preview text: most product-led companies aren’t capturing high-intent signals

Hi ,

Adding a bit more context: product-led companies like yours often see 20–30% of signups showing high-intent behaviors in PostHog — like repeated feature use or team invites — but those leads never get a sales touch because there’s no bridge between product and outbound.

GrowthBridge builds that bridge automatically. It scores and surfaces your hottest accounts, then pushes them to your CRM or email outreach in real time. Could I send over a 2-minute Loom of how it looks inside a PostHog setup like yours?

No need for a call if it’s not a fit — just a quick look.

Cheers,

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Day 7 – Final Breakup

Subject: Closing the loop Preview text: if timing is off, no hard feelings

Hey ,

I’ll stop chasing. It’s possible this isn’t the right time, or you’re deep in YC Demo Day prep. No sweat.

If you ever want to automate pipeline from PostHog, let me know. I’ll send you one helpful thing — a short guide, “3 Ways YC Startups Turn Product Insights into Outbound” — if you reply with “yes.”

Otherwise, good luck with the next batch. Keep building.

Cheers,

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Each message stays under 100 words, references PostHog and YC organically, and includes a specific, low-friction ask. That’s the golden formula for this audience — respect their time, speak their language, and make the next step incredibly easy.

You can adjust the cadence. Some teams see better results with Day 1, Day 4, Day 8. Others prefer a shorter gap for the first follow-up (Day 2). Origami’s sequencer lets you set any interval, so test what works best with your list.

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Step 4 – Send the Sequence Directly from Origami

Once your sequence is built, everything happens inside Origami. This isn’t an integration — it’s native. You don’t export a CSV, upload it to another tool, or mess with SMTP settings beyond connecting your Gmail or Outlook account once. Here’s what the workflow looks like:

1. Launch the campaign. Select your refined segment, attach the sequence (or let the AI generate one), set your sending schedule, and click “Start.” Origami’s built-in email sequencer will send each touch automatically, respecting the delays you configured.
2. Track all activity in one dashboard. Opens, clicks, replies — all appear next to the same enriched lead profiles you built earlier. When you see a prospect open your third email but not reply, you can instantly check their tech stack, company size, and title to understand why — without switching tabs.
3. Full prospect context when you reply. If someone does reply, Origami shows their original lead enrichment data right inside the inbox view. You’ll see that they’re a VP of Growth at a 15-person YC company, still using PostHog, and maybe even what other tools they’re using. That context makes your reply sharper.
4. Automatic unenrollment on reply. The moment a lead replies, Origami pulls them out of the sequence. You’ll never accidentally send a breakup email to someone who just booked a meeting. This small automation alone saves embarrassment and protects your sender reputation.
5. No additional cost to send. The sequencer itself is included on all paid plans. You only ever pay for the credits used to enrich leads. So once your list is enriched, sending 100, 200, or 500 emails costs you nothing extra.

The result: you go from a plain-English prompt to a fully tracked, multi-touch outreach campaign in a single tool. No exporting, no syncing, no logging into three different platforms to understand why a given prospect replied.

What Response Rate to Expect

For a well-targeted list of YC companies using PostHog — where you’ve filtered for growth and product leaders at companies with 6+ employees — you can expect a positive reply rate between 5% and 10% with a relevant, tight message like the ones above. That’s based on real campaigns I’ve run in this ecosystem. If you dip below 3%, the list or the messaging needs tweaking.

Iterate in two layers:

• Message first. After 100–150 emails sent, if open rates are healthy (>50%) but replies are low, your copy isn’t resonating. Test different subject lines, value props, or CTAs. Origami’s sequencer lets you clone and modify sequences quickly.
• List second. If bounce rates exceed 5% or open rates are below 40%, revisit your enrichment filters. You may be targeting roles that don’t exist at seed-stage YC companies, or your “use PostHog” criteria didn’t catch enough verified matches.

Because Origami keeps your list and sending in one place, you can spot these problems fast. A reply that says “we haven’t used PostHog in 6 months” tells you to tighten your tech-stack filtering, not just your messaging.

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One Platform, From List to Reply

That’s the whole play: build a surgically accurate list with a single prompt in Origami, refine it to a razor-sharp segment, deploy a 3-touch sequence with messages built for how YC/PostHog leads think, and send it all from the same dashboard. There’s no “export and hope the CSV import works” step, no separate email tool to pay for, and no context gap when a prospect replies.

If you’re still splitting your workflow between a data enrichment tool and a cold email tool, you’re leaking response rate. Try the free plan, load 1,000 credits, and run this exact campaign yourself. You’ll have feedback on the messages before your next coffee.

Ready to go from prompt to outreach in one move? Get started on Origami