How One Founder Raised $7 Million Across Three Rounds Using Only Cold Email — With a Spreadsheet

Michael Bamberger was building Tetra Insights — a qualitative data analysis platform for enterprise research teams — in Boulder, Colorado.

He had paying customers: LexisNexis, Yara, Segment. He had a working product and real revenue. What he didn't have was a warm introduction to any VC.

So he built a system.

On the first day of his fundraise, he cold-emailed five funds. Within two hours, one replied. That investor became his lead.

Tetra Insights raised $500K (friends and family, 2019), a $1.5M seed (2020), and a $5M Series A (2021) — $7 million total across three rounds. Every lead investor came from cold outreach.

Here is how the system worked.

Step 1: Build a Targeted List, Not a Long List

Most founders approach investor outreach as a volume game: compile every VC email address you can find and blast them all.

Bamberger did the opposite. He used CrunchBase Pro and Foundersuite to filter for funds with a specific profile:

• Stage focus: Seed and early Series A
• Sector focus: B2B SaaS with enterprise customers
• Geography: Funds that had invested outside the coastal hubs (since Tetra was in Boulder)
• Portfolio signal: Funds that had previously invested in qualitative research, data analysis, or enterprise workflow tools

The result was not a list of 500 funds. It was a list of 20–30 that genuinely fit the profile.

This matters for a reason that compounds throughout the process: a targeted list enables real personalization. You cannot write a specific, investor-focused cold email when you're targeting 500 funds. You can when you're targeting 30.

Step 2: Research Each Fund Before Writing

For each fund on his shortlist, Bamberger researched:

• The specific partner who covered his sector
• That partner's publicly stated investment thesis
• The fund's relevant portfolio companies
• Any recent content the partner had published or been quoted in

This research took time. But it made the cold email possible — because the email referenced specific facts about the investor, not generic statements about the firm.

Step 3: Write One Email Per Investor, Not One Email For All

Bamberger's cold email template was consistent in structure but unique in content. For each investor, the email contained:

• A specific reference to why this fund specifically (a portfolio company, a stated thesis, a published opinion)
• A clear one-sentence description of Tetra Insights
• The traction signal: named enterprise customers (LexisNexis, Yara, Segment)
• The stage and ask
• A precise, easy request (a 20-minute call)

The named customers were his strongest credibility signal. These are recognizable enterprise names in the research and data space. An investor in B2B SaaS could verify the customer fit in seconds.

Step 4: Track Everything

Bamberger used Foundersuite's CRM to track every outreach: when the email was sent, whether it was opened, whether it got a reply, and what the follow-up schedule was.

This is not optional. Without tracking:

• You don't know who opened the email and didn't reply (a warm lead that needs follow-up)
• You lose the follow-up timing advantage (the sequence only works if you know when to send each touch)
• You can't learn from what's working (which subject lines got opens, which messages got replies)

Bamberger's system was not a casual process. It was a sales pipeline — because fundraising is a sales process.

Step 5: Follow Up With New Information Every Time

When an investor didn't reply, Bamberger followed up on a schedule — but never with the same email. Each follow-up added a new signal:

• A new customer signed
• An updated revenue metric
• A new investor who had committed
• A press mention or award

By the time an investor reached the third or fourth touch, they weren't reading a cold pitch anymore. They were reading a company that had continued to execute while they weren't paying attention.

The Result: 2 Hours to First Reply, Three Rounds Closed

Day 1 of the fundraise: five cold emails sent. Two hours later: one reply, one interested investor, one eventual lead.

This is not typical. It happened because Bamberger had done the targeting work that most founders skip.

The subsequent raises — the $1.5M seed and the $5M Series A — followed the same process with updated metrics. The system scaled because the fundamentals were sound: targeted list, specific personalization, strong customer proof, disciplined follow-up.

The Spreadsheet Is Not Optional

The detail that most founders skip when they hear this story: the spreadsheet.

Bamberger tracked every investor. He knew who had opened his email. He knew who had clicked a link. He knew who had replied to one email and gone cold. He knew which follow-up had converted.

This data made the next round faster. By the Series A, he wasn't starting from scratch. He had 18 months of data on which investors engaged with his content, which ones had asked about follow-on investment, and which ones had explicitly said "not now but check back."

Those "not now" investors became warm leads when the metrics justified it.

Cold email is not a one-time event. For Bamberger, it was a system that compounded across three rounds and $7 million in funding.