Marsh & McLennan (rebranding to Marsh effective January 2026) is a global professional services firm headquartered in New York with 90,000+ colleagues across 130+ countries. The company operates four main businesses: Marsh Risk (53% of revenues) providing insurance brokerage and risk management; Guy Carpenter (10%) offering reinsurance intermediary services; Mercer (23%) delivering consulting on health, retirement and talent; and Oliver Wyman (14%) providing strategy consulting. It is the world's largest insurance broker, ranked 175th on Fortune 500 and 267th on Forbes Global 2000. Signal Plug searches live against marshmclennan.com's mail server to find and verify email addresses for any Marsh & McLennan Companies, Inc. employee.
Signal Plug searches live against marshmclennan.com's mail server — not a static database. Get a verified email for any Marsh & McLennan Companies, Inc. employee with confidence score in under 2 seconds.
94% accuracy · No credit card required · 10 free searches/month
Marsh & McLennan (rebranding to Marsh effective January 2026) is a global professional services firm headquartered in New York with 90,000+ colleagues across 130+ countries. The company operates four main businesses: Marsh Risk (53% of revenues) providing insurance brokerage and risk management; Guy Carpenter (10%) offering reinsurance intermediary services; Mercer (23%) delivering consulting on health, retirement and talent; and Oliver Wyman (14%) providing strategy consulting. It is the world's largest insurance broker, ranked 175th on Fortune 500 and 267th on Forbes Global 2000.
Competitive Advantage
The company traces its heritage to 1871, evolving from the Great Chicago Fire era through to the AI age. Risk and insurance services drive 71% of operating profit despite representing only 63% of revenues, demonstrating higher margins in this segment. Marsh partners with Bloomberg and the World Economic Forum, with executive participation in Davos annually to shape global risk discourse. The company's 150+ years of perspective is positioned as a competitive differentiator in helping clients anticipate future risks. The brand consolidation to Marsh represents a significant strategic pivot from the 1961-established Marsh McLennan identity.
The most commonly verified format at Marsh & McLennan Companies, Inc.:
High ConfidenceSignal Plug tests all common patterns against Marsh & McLennan Companies, Inc.'s live mail server and returns whichever passes the SMTP check.
Run a live search for Marsh & McLennan Companies, Inc. →Data-driven signals to help you prospect Marsh & McLennan Companies, Inc. effectively.
Enterprise organizations across financial services, healthcare, energy, manufacturing, construction, technology, retail, transportation and public sector recruit talent from Marsh due to the firm's prestigious brand and exposure to complex risk management and consulting projects. Clients typically require integrated solutions spanning risk, strategy and talent development.
Primary Contact
Chief Risk Officer
Tuesday–Thursday, 9am–11am
Signal Plug performs live SMTP verification against marshmclennan.com's mail server — not a static scraped database — which means results reflect the real, current state of Marsh & McLennan Companies, Inc.'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 Marsh & McLennan Companies, Inc. contacts before upgrading.
Enter the contact's name
Type the first and last name of the Marsh & McLennan Companies, Inc. employee you want to reach. Signal Plug handles all seniority levels, from C-suite to individual contributors.
Enter the domain
Use marshmclennan.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 Marsh & McLennan Companies, Inc. 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 Marsh & McLennan Companies, Inc. names in a single batch.
Marsh & McLennan Companies, Inc. competes directly with Aon plc, Willis Towers Watson, Arthur J. Gallagher & Co. and others in the Professional Services space.
| Company | Size | Tier | Focus | Email Format |
|---|---|---|---|---|
| Marsh & McLennan Companies, Inc. | 90,001–100,000 | Insurance Brokerage, Risk Management, Management Consulting | firstname.lastname | |
| Aon plc | — | — | — | firstname.lastname |
| Willis Towers Watson | — | — | — | firstname.lastname |
| Arthur J. Gallagher & Co. | — | — | — | firstname.lastname |
| Kroll | — | — | — | firstname.lastname |
| BDO | — | — | — | firstname.lastname |
Whether you're running outbound sales, recruiting, or building a partnership list, these are the roles most frequently contacted at Professional Services like Marsh & McLennan Companies, Inc..
Based on Marsh & McLennan Companies, Inc.'s profile, the highest-value contacts for outbound are:
Signal Plug works for any role at any seniority level at marshmclennan.com. If you have a name and the domain, you can find a verified email.
How well Marsh & McLennan Companies, Inc. 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 marshmclennan.com's mail server using SMTP verification. This means results reflect the current state of Marsh & McLennan Companies, Inc.'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 Marsh & McLennan Companies, Inc. 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 marshmclennan.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 Marsh & McLennan Companies, Inc. employee emails is maintained.
Yes. Growth and Scale plan users can upload a CSV of names and run bulk lookups against marshmclennan.com in a single batch.
Marsh helps organizations navigate risk, develop their people, and build strategies to thrive through expertise across risk, reinsurance and capital, people and investments, and management consulting.
Marsh serves financial services, healthcare, energy, manufacturing, construction, technology, retail, transportation, and the public sector.
Marsh integrates distinct capabilities across risk, strategy, and people, connecting data and insights across the firm to address complex interconnected client challenges.
Yes, many clients work with multiple Marsh businesses for interconnected challenges, and existing teams can introduce clients to colleagues across the organization.
Signal Plug searches in real time against marshmclennan.com's mail server to find and verify email addresses for Marsh & McLennan Companies, Inc. 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