Acuity International, formerly Caliburn International LLC, is a professional services provider headquartered in Reston, Virginia, with approximately 2,800 employees. The company delivers process- and technology-driven critical services for U.S. government and commercial clients worldwide, including the Department of Defense and Department of State. Its core capabilities span occupational health services, disaster response and recovery, global health services, program and construction management, environmental remediation, munitions response and demilitarization, security services, and base and critical facilities management. Acuity has roots tracing back to Comprehensive Health Services, Janus Global Operations, Project Time & Cost (PT&C), Michael Baker Global Services, and Sallyport. Signal Plug searches live against acuityinternational.com's mail server to find and verify email addresses for any Acuity International employee.
Signal Plug searches live against acuityinternational.com's mail server — not a static database. Get a verified email for any Acuity International employee with confidence score in under 2 seconds.
94% accuracy · No credit card required · 10 free searches/month
Acuity International, formerly Caliburn International LLC, is a professional services provider headquartered in Reston, Virginia, with approximately 2,800 employees. The company delivers process- and technology-driven critical services for U.S. government and commercial clients worldwide, including the Department of Defense and Department of State. Its core capabilities span occupational health services, disaster response and recovery, global health services, program and construction management, environmental remediation, munitions response and demilitarization, security services, and base and critical facilities management. Acuity has roots tracing back to Comprehensive Health Services, Janus Global Operations, Project Time & Cost (PT&C), Michael Baker Global Services, and Sallyport.
The most commonly verified format at Acuity International:
Medium ConfidenceSignal Plug tests all common patterns against Acuity International's live mail server and returns whichever passes the SMTP check.
Run a live search for Acuity International →Data-driven signals to help you prospect Acuity International effectively.
Primary Contact
VP of Operations
Tuesday–Thursday, 9am–11am
From 1 employees in 2020 to ~3,000 in 2026.
Signal Plug performs live SMTP verification against acuityinternational.com's mail server — not a static scraped database — which means results reflect the real, current state of Acuity International'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 Acuity International contacts before upgrading.
Enter the contact's name
Type the first and last name of the Acuity International employee you want to reach. Signal Plug handles all seniority levels, from C-suite to individual contributors.
Enter the domain
Use acuityinternational.com. 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 Acuity International 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 Acuity International names in a single batch.
Acuity International competes directly with KBR, Leidos, PAE Incorporated and others in the Professional Services space.
| Company | Size | Tier | Focus | Email Format |
|---|---|---|---|---|
| Acuity International | 1,001–5,000 | Mid-Market | Government Services & Defense Contracting | firstname.lastname |
| KBR | — | — | — | firstname.lastname |
| Leidos | — | — | — | firstname.lastname |
| PAE Incorporated | — | — | — | firstname.lastname |
| Vectrus | — | — | — | firstname.lastname |
| DynCorp International | — | — | — | firstname.lastname |
Based on industry, headcount tier, and growth signals, these companies share a similar profile:
Whether you're running outbound sales, recruiting, or building a partnership list, these are the roles most frequently contacted at Professional Services like Acuity International.
Based on Acuity International's profile, the highest-value contacts for outbound are:
Signal Plug works for any role at any seniority level at acuityinternational.com. If you have a name and the domain, you can find a verified email.
How well Acuity International fits a typical B2B outbound pipeline, based on available signals.
Strong 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 acuityinternational.com's mail server using SMTP verification. This means results reflect the current state of Acuity International'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 Acuity International contacts to email first and personalize your outreach before you hit send. Given Acuity International's mid-market footprint (1,001–5,000 employees), Growth plan users at $149/month get the search volume needed for a full account campaign. Plans start at $29/month for 500 searches — no annual contracts or seat fees.
Signal Plug performs a live SMTP check against acuityinternational.com'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 Acuity International employee emails is maintained.
Yes. Growth and Scale plan users can upload a CSV of names and run bulk lookups against acuityinternational.com in a single batch.
Acuity International provides professional services including healthcare, disaster response, security, environmental remediation, and facilities management for government and commercial clients worldwide.
Acuity International was formerly known as Caliburn International LLC.
The company is headquartered in Reston, Virginia.
Acuity International has approximately 2,800 employees.
Signal Plug searches in real time against acuityinternational.com's mail server to find and verify email addresses for Acuity International 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