Find co-founder emails by role, stage, company, and domain
Build co-founder lists across technical founders, commercial co-founders, founder-CEOs, founder-COOs, and agency partners using company domain, stage, industry, employee size, geography, verified email, phone, and LinkedIn coverage.
Built for campaigns where “co-founder” is not enough context: technical founders, commercial co-founders, founder-COOs, and agency partners often own different decisions and need separate lists.
Co-founder lists fail when title match replaces operating context
A co-founder can be the technical buyer, commercial owner, operations lead, agency partner, or an old founder title on a profile. The useful list proves what kind of co-founder the campaign needs.
| Problem | Manual Search | Generic Database | Dievio |
|---|---|---|---|
| Operator role | Manual profile review can identify whether the co-founder owns product, sales, partnerships, operations, or services delivery. | Co-Founder, CEO, CTO, COO, Founder, and Partner records often land in one export with no buyer-lane separation. | Split technical, commercial, operations, and partner-style co-founder variants before exporting the segment. |
| Stale founder title | You can open LinkedIn profiles one by one to confirm the co-founder still belongs to the target company. | Old founder titles can remain attached to people who now work somewhere else. | Use current company, domain, employee size, and LinkedIn URL coverage as the QA path before credits are spent. |
| Stage fit | Research can reveal whether the company is still founder-operated, but it does not scale cleanly. | Solo projects, tiny agencies, startups, and mature executive teams can be mixed under the same co-founder keyword. | Filter by stage proxy, company category, industry, geography, employee-size band, and domain before requiring contact fields. |
Build a co-founder list around the decision the founder owns
Co-founder search converts better when the page helps the user decide which founder lane to export. Technical, commercial, and partner-led companies should not automatically share one campaign.
- 01
Choose the co-founder lane
Start with Co-Founder, then add CTO or Technical Founder for product/engineering offers, CEO or COO for commercial and operating offers, and Partner or Managing Partner for services firms.
The list matches the decision owner instead of the broad co-founder keyword. - 02
Anchor the company stage
Use company domain, industry, employee size, geography, and startup or services categories to keep founder-led companies separate from mature executive teams.
The export stays aligned to companies where a co-founder is still likely to own the buying decision. - 03
Require reviewable fields
Preview verified email, LinkedIn URL, phone availability, and company domain before export, especially when stale founder titles would damage the campaign.
The final segment is usable for cold email, LinkedIn QA, recruiting, partnerships, or calling-supported outreach.
Choose the co-founder lane before building the list
The fastest way to make a co-founder list useful is to decide which founder responsibility matches the offer before adding contact fields.
| Co-Founder Lane | Titles To Include | Best Campaign Fit | Avoid |
|---|---|---|---|
| Technical co-founder | Co-Founder, CTO, Technical Founder, Founding Engineer | Developer tools, APIs, infrastructure, security, product, engineering recruiting | Mixing in agency partners or commercial founders when the offer is technical |
| Commercial co-founder | Co-Founder, CEO, COO, Founder Operator | Growth, sales, hiring, partnerships, finance, operations, vendor decisions | Assuming every CEO owns product or engineering evaluation |
| Services co-founder | Co-Founder, Partner, Principal, Managing Partner | Agency, consulting, legal, finance, recruiting, and professional-services outreach | Blending services firms with venture-backed startup segments |
What a co-founder export should prove
A useful co-founder record should show the founder lane, current-company fit, company stage, and contact-field readiness.
| Field | Example | Why It Helps |
|---|---|---|
| Contact | Priya Shah, Co-Founder & COO | Shows the co-founder variant and operating lane that matched. |
| Company | Seed-stage B2B SaaS, 31 employees, United States | Confirms the company is still likely to be founder-operated. |
| Domain | workflowharbor.ai | Keeps the contact attached to the selected account or market segment. |
| Founder lane | Commercial / operations co-founder | Separates this buyer from technical founders or agency partners. |
| Verified business email available | Makes the record usable for direct outbound. | |
| Current profile URL available | Supports current-company and stale-title QA before sequencing. |
Where this page should convert
Each path maps the same search intent to a real campaign, so the page sells a workflow instead of a list of filters.
Technical founder campaigns
Target Co-Founder, CTO, and Technical Founder variants for developer tools, infrastructure, security, API, data, product, or engineering recruiting offers.
Commercial co-founder outreach
Use Co-Founder, CEO, COO, and founder-operator variants when the offer maps to growth, sales, partnerships, operations, hiring, or vendor decisions.
Agency and services partner lists
Keep Co-Founder, Partner, Principal, and Managing Partner records separate when targeting agency, consulting, legal, finance, or professional services firms.
Founder-role QA before export
Require LinkedIn URL and company-domain fields when the campaign needs a current co-founder, not someone with an old founder title.
Questions teams ask before exporting
Can Dievio find co-founder emails by company domain?
Yes. Use company website or domain filters with Co-Founder, Founder, CEO, CTO, COO, and Technical Founder title variants, then require business email, phone availability, or LinkedIn URL fields before export.
Should I target co-founders or CEOs for early-stage outreach?
For early-stage companies, include both. CEO and Co-Founder often overlap, but splitting commercial and technical founder variants can make the final outreach more relevant.
How do I avoid exporting irrelevant founder profiles?
Use current company domain, employee size, industry, region, verified email, and LinkedIn URL filters. Preview the count before export and keep technical, commercial, and owner-operated segments separate.
Preview the co-founder lane before export
Check technical or commercial role fit, company stage, current domain, verified email, LinkedIn URL, and phone availability before spending credits.