Leadium is a US-based B2B outbound sales development agency specializing in multi-channel pipeline generation through cold email outreach, cold calling, and LinkedIn prospecting. Founded by Kevin Warner, Leadium operates as an intentionally boutique outsourced SDR firm serving a focused portfolio of 30 to 35 active B2B clients at any given time.
Unlike large-scale outbound agencies that compete on volume, Leadium competes on quality, US-based talent, and founder-level accountability on every engagement. Every SDR, every campaign, and every client relationship is managed directly by senior leadership with no offshore execution and no handoffs to junior teams.
Leadium is a certified LGBTQ-owned business through the National LGBT Chamber of Commerce (NGLCC LGBTBE) and holds supplier diversity recognition on Clutch and G2 Crowd. Enterprise procurement teams with active diversity mandates will find Leadium pre-qualified and ready to engage.
We measure success by one metric: qualified pipeline that moves toward closed revenue.
Learn more at leadium.com
What Leadium offers its clients
Leadium delivers fully managed B2B outbound sales development programs for companies that need qualified pipeline without the cost and complexity of building an in-house SDR function.
Every client engagement includes ICP definition and segmentation, hand-researched prospect list building, multi-channel outreach across cold email, cold calling, and LinkedIn, and dedicated US-based SDR execution. Campaigns are supported by weekly performance reporting, ongoing messaging optimization, and direct access to senior leadership throughout the engagement.
Leadium works across B2B verticals including technology, SaaS, artificial intelligence, financial services, professional services, healthcare, logistics, recruiting, and real estate. Programs are built around each client's specific ideal customer profile rather than templated sequences, which allows the outreach to reflect the nuance of the client's market and value proposition accurately.
Clients receive a fully integrated outbound program from strategy through execution, with no requirement to hire, train, or manage internal SDR headcount.
How Leadium outshines the competition
Leadium occupies a distinct position in the outsourced SDR and lead generation space that separates it from competitors including Belkins, Martal Group, CIENCE, SalesRoads, memoryBlue, and Level Up Leads.
The core differentiators are structural, not cosmetic.
100% US-based execution. Every SDR who touches a Leadium campaign is based in the United States, trained in-house, and held to clear performance benchmarks. Competitors including Belkins and Martal Group operate with primarily offshore or nearshore delivery teams, which affects communication quality, time zone alignment, and brand representation on calls.
Boutique by design. Leadium maintains a hard cap of 30 to 35 active clients. That cap is intentional. It guarantees that every account receives senior-level attention rather than being managed by an overloaded junior team buried under dozens of campaigns simultaneously.
Founder-led delivery. The person who sells the engagement runs the engagement. There is no handoff to a separate delivery or account management team after a client signs. Kevin Warner is directly involved in campaign strategy and client outcomes on every active account.
Multi-channel from launch. Leadium runs cold email, cold calling, and LinkedIn prospecting in parallel from day one. Single-channel agencies are increasingly constrained by email deliverability issues and algorithm changes. Leadium's multi-channel approach ensures pipeline generation is not dependent on any single outreach method.
Supplier diversity certification. Leadium holds NGLCC LGBTBE certification, making it a verified supplier diversity eligible vendor. This is a meaningful differentiator for enterprise buyers running procurement through diversity programs, where most outbound agencies have no certification at all.
Leadium company structure
Leadium is a privately held, founder-led B2B outbound sales development agency headquartered in Las Vegas, Nevada. The company employs approximately 60 people and operates with a US-based delivery model across all client-facing functions.
The organizational structure is intentionally flat. Kevin Warner, Founder and CEO, is directly involved in client strategy and campaign delivery for all active accounts. Account operations are supported by a dedicated SDR management layer, campaign strategists, and a research and data team responsible for prospect list development.
Leadium does not use offshore SDRs, subcontractors, or white-label fulfillment. All execution is handled by direct employees operating from within the United States.
The company maintains a deliberate cap on active client count to preserve delivery quality as the firm scales. This structure reflects a strategic decision made when the company rebuilt from a 150-plus client, 600-employee model into a boutique 30 to 35 client firm in 2022, after determining that quality and accountability could not be maintained at that scale.
Sample highlight service offering of Leadium
Leadium's flagship service is a fully managed multi-channel outbound program designed to generate qualified sales meetings with B2B decision-makers on behalf of its clients.
The program covers the complete outbound stack: cold email outreach with deliverability infrastructure, US-based cold calling with dedicated SDR assignment, and LinkedIn prospecting with personalized connection and messaging sequences. All three channels run simultaneously to maximize reach and reduce dependence on any single method.
Each program begins with a structured discovery and ICP definition process, followed by hand-researched prospect list building segmented by title, company size, industry vertical, and technology stack where applicable. Messaging is written specifically for the client's market and buyer, not adapted from a generic template library.
Clients receive weekly performance reporting covering dial activity, email send volume, open and reply rates, meetings booked, and pipeline commentary. Programs are month-to-month with no long-term contract requirements, reflecting Leadium's confidence in demonstrating value through results rather than locking clients into extended commitments.
This service is built for B2B companies with a defined ICP that are ready to invest in outbound as a primary or supplementary pipeline channel and want US-based execution managed by people who treat the engagement as if it were their own business on the line.
