SEO.co is an internationally recognized search engine optimization company serving startups to Fortune 500 enterprises. Operating as a full-service digital marketing agency, the company provides SEO, link building, content marketing, PPC (via PPC.co), and web development (via Dev.co) services. They specialize in scaling content creation and link acquisition to improve search engine rankings, helping clients position themselves prominently in search results for high-intent keywords and outrank competitors. Signal Plug searches live against seo.co's mail server to find and verify email addresses for any SEO.co employee.
Signal Plug searches live against seo.co's mail server — not a static database. Get a verified email for any SEO.co employee with confidence score in under 2 seconds.
94% accuracy · No credit card required · 10 free searches/month
SEO.co is an internationally recognized search engine optimization company serving startups to Fortune 500 enterprises. Operating as a full-service digital marketing agency, the company provides SEO, link building, content marketing, PPC (via PPC.co), and web development (via Dev.co) services. They specialize in scaling content creation and link acquisition to improve search engine rankings, helping clients position themselves prominently in search results for high-intent keywords and outrank competitors.
Competitive Advantage
SEO.co operates a network of specialized sister agencies (PPC.co for paid advertising, Dev.co for development) enabling integrated digital marketing solutions. The company published thought leadership content specifically debunking low-quality link building tactics and educating clients on backlink quality standards. LinkedIn presence shows 404 followers, suggesting either a newer corporate profile or selective growth strategy focusing on direct client relationships over social reach.
The most commonly verified format at SEO.co:
Low ConfidenceSignal Plug tests all common patterns against SEO.co's live mail server and returns whichever passes the SMTP check.
Run a live search for SEO.co →Data-driven signals to help you prospect SEO.co effectively.
Primary Contact
Chief Marketing Officer
Tuesday–Thursday, 9am–11am
Signal Plug performs live SMTP verification against seo.co's mail server — not a static scraped database — which means results reflect the real, current state of SEO.co's email infrastructure. Here's how to run a lookup:
Create a free account
Sign up at Signal Plug in under 30 seconds. No credit card required. The Free plan includes 10 searches per month so you can test the tool with real SEO.co contacts before upgrading.
Enter the contact's name
Type the first and last name of the SEO.co employee you want to reach. Signal Plug handles all seniority levels, from C-suite to individual contributors.
Enter the domain
Use seo.co. Signal Plug tests all common naming patterns automatically and returns only the format that passes the SMTP check.
Get a verified result
Signal Plug returns an email address with a confidence score (0–100) and deliverability status (Valid, Risky, or Catch-all) within 2 seconds. The confidence score tells you how reliable the result is before you use it.
Export and use
One-click CSV export lets you bring SEO.co contacts into Salesforce, HubSpot, Outreach, Lemlist, or any other tool in your stack. Growth and Scale plan users can run bulk lookups across an entire list of SEO.co names in a single batch.
SEO.co competes directly with Ahrefs, Moz, SEMrush and others in the Technology space.
| Company | Size | Tier | Focus | Email Format |
|---|---|---|---|---|
| SEO.co | Digital Marketing & SEO Services | firstname.lastname | ||
| Ahrefs | — | — | — | firstname.lastname |
| Moz | — | — | — | firstname.lastname |
| SEMrush | — | — | — | firstname.lastname |
| Neil Patel Digital | — | — | — | firstname.lastname |
| Ignite Visibility | — | — | — | firstname.lastname |
Whether you're running outbound sales, recruiting, or building a partnership list, these are the roles most frequently contacted at Technology like SEO.co.
Based on SEO.co's profile, the highest-value contacts for outbound are:
Signal Plug works for any role at any seniority level at seo.co. If you have a name and the domain, you can find a verified email.
How well SEO.co fits a typical B2B outbound pipeline, based on available signals.
Moderate Fit
Funnel Fit Score
Most email finder tools pull from static databases of scraped email addresses. These databases go stale as people change jobs and companies update their email infrastructure. Signal Plug takes a different approach: every search performs a live check against seo.co's mail server using SMTP verification. This means results reflect the current state of SEO.co's email system — not a cached result from months or years ago.
Signal Plug enriches every result with supporting data: a confidence score (0–100), deliverability status (Valid, Risky, or Catch-all), job title where available, and LinkedIn profile URL. This context helps you prioritize which SEO.co contacts to email first and personalize your outreach before you hit send. Plans start at $29/month for 500 searches — no annual contracts or seat fees.
Signal Plug performs a live SMTP check against seo.co's mail server for every query — not a static database lookup. Our platform-wide accuracy rate is 94%. Each result comes with a confidence score (0–100) so you can gauge reliability before using the address.
Free plan: 10 searches. Starter ($29/mo): 500. Growth ($149/mo): 2,000. Scale ($299/mo): 5,000. No company-specific caps.
No. Signal Plug generates and verifies emails in real time via SMTP checks — no static database of SEO.co employee emails is maintained.
Yes. Growth and Scale plan users can upload a CSV of names and run bulk lookups against seo.co in a single batch.
SEO.co offers search engine optimization, link building, content marketing, PPC advertising, and web development services through their network of sister agencies (PPC.co, Dev.co).
They serve startups through Fortune 500 companies across all industries.
They focus on earning authoritative, high-quality backlinks that strengthen domain trust and visibility in search results.
Yes, they have the ability to scale content creation at enterprise levels.
Signal Plug searches in real time against seo.co's mail server to find and verify email addresses for SEO.co employees. Enter a name, enter the domain, get a verified result with a confidence score in under 2 seconds.
Start finding emails free →10 free searches · No credit card required · Upgrade from $29/month