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Pipeline arithmetic in the open, for the people who own the number.

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Agencies, Outbound and SDR services

Leadium

Leadium sells outbound appointment setting, B2B contact data sourcing and inbound lead qualification, delivered by a US-based SDR team.

Listing
Directory entry, unranked
Main category
Outbound and SDR services
Last verified
Facts checked
43
Not ranked

Who it fits (our reading of its own pages; opinion)

From its own pages, Leadium describes itself as a boutique sales development agency that serves companies from startups and SMBs through enterprise, and its audience list names CEOs and founders, chief revenue officers, sales and marketing executives, business development and sales operations. Its industry pages name SaaS, cybersecurity, freight logistics, digital transformation, marketing services, e-learning, healthcare, e-commerce, staffing and recruiting, and manufacturing. The problems it takes on are booking sales appointments, sourcing and validating contact data that matches an ideal customer profile, fixing email deliverability and qualifying inbound leads quickly. It runs outbound through email, cold calling, LinkedIn prospecting, gifting and marketing events, with a US-based SDR team. Clients engage on month-to-month contracts, and each data request defines its criteria, quantity and delivery schedule.

What Leadium does, from its own pages

Leadium is an outbound sales development agency. Its about page states that it builds, trains and scales SDR teams to drive pipeline and revenue. Its homepage lists solutions by industry (cybersecurity, SaaS, freight logistics, marketing services, digital transformation), by role (CEOs and founders, chief revenue officers, sales and marketing executives) and by company size from startups to enterprise.

Its services are appointment setting, data sourcing and inbound lead qualification. Its appointment setting page says it creates outbound sales strategies, crafts personalized multi-touch sequences, handles responses and books appointments directly to the client calendar. On data, its pages state that dedicated research teams source and validate B2B contact data to a client ideal customer profile, with a five-step process that ends in client approval of a Google Sheet. Its contact page states a focus on engaging inbound leads in under 5 minutes. Its pricing page states that all contracts are month-to-month.

The agency states that clients have seen a 67% reduction in costs compared with building in-house teams and a 73% increase in conversations using channel-optimized lead data. Its case studies page states that 76 clients were acquired and that 5 had IPOs. These figures are the agency's own claims.

The same page describes a 100% US-based SDR team. Its contact page gives Leadium HQ as 8488 Rozita Lee Avenue, Las Vegas, Nevada.

Facts

Headquarters
Las Vegas, Nevada
Services, as it names them
Appointment Setting; Data Sourcing; Inbound Lead Qualification; Outbound Email; Cold Calling; LinkedIn Prospecting; Gifting; Marketing Events; Outbound consulting
Industries
Cybersecurity, SaaS, Freight Logistics, Marketing Services, Digital Transformation, Healthcare, E-Commerce, Staffing & Recruiting
Clients its pages name
HackerOne, PayEm, Scrubs & Beyond, Rackspace, Goodyear, Phunware, Minted, OSRAM, TUV SUD
Platform partnerships it states
Outreach

Packaged offers it names

Appointment Setting

Leadium runs outbound campaigns and books appointments directly to the client calendar.

Leadium creates outbound sales strategies, crafts personalized multi-touch sequences and handles responses. Appointments are booked directly to the client calendar.

How this entry was checked

Every fact above comes from Leadium's own website, last verified on . The record keeps, for each fact, the page it came from and a passage copied from that page, and software confirmed each passage before publication. Results the agency reports about its own work are its claims, not our findings. The note on who it fits is our opinion. The agency has not claimed this entry.

To claim the entry or correct a fact, see how the agency vault works or use the corrections page with a link to the page on the agency's own site that states the correct fact.

Sources

  1. B2B Lead Generation & Sales Appointments | Leadium, read 23 Oct 2026.
  2. B2B Appointment Setting & Lead Gen | Leadium, read 23 Oct 2026.
  3. B2B Lead Generation & Contact Data | Leadium, read 23 Oct 2026.
  4. Contact Leadium | Get in Touch with Our Team, read 23 Oct 2026.
  5. B2B Lead Generation Pricing & Plans | Leadium, read 23 Oct 2026.
  6. B2B Sales Success Stories | Leadium Case Studies, read 23 Oct 2026.
  7. About Leadium | 10+ Years of Outbound Sales Excellence, read 23 Oct 2026.

Other outbound and SDR services agencies

Listed alphabetically, never ranked. 10 other agencies in the vault work in outbound and SDR services.

Ari Digital

Outbound and SDR services, Demand generation, Fractional CMO firms

Ari Digital runs done-for-you B2B outbound appointment setting over email and LinkedIn, plus fractional CMO and go-to-market work for early-stage B2B startups.

Belkins

Outbound and SDR services, ABM, Demand generation

Belkins runs outbound lead generation for B2B companies, setting appointments through cold email, LinkedIn and calling, and offers account-based marketing and outsourced SDRs.

Callbox

Outbound and SDR services, ABM, Demand generation

Callbox is a B2B lead generation agency offering appointment setting, outsourced SDRs, account-based marketing and demand generation, mainly to software, SaaS, cloud, cybersecurity, fintech and AI companies.

CIENCE

Outbound and SDR services, Demand generation

CIENCE runs outsourced SDR teams that book qualified sales meetings for B2B companies by phone, email and LinkedIn, on a month-to-month basis.

Cleverly

Outbound and SDR services

Cleverly runs done-for-you outbound lead generation for B2B companies across cold email, cold calling and LinkedIn.

memoryBlue

Outbound and SDR services, Demand generation, Marketing recruiters

memoryBlue provides outsourced SDR, ADR and AE teams, plus marketing, recruitment, training and technology services, for B2B technology and professional-services companies.

Salesfolk

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SalesFolk writes cold email templates that help B2B sales and marketing organizations start conversations with their future customers.

SalesHive

Outbound and SDR services

SalesHive is a B2B outbound agency that provides SDR teams, cold calling, email outreach, list building and appointment setting on its own platform.

SalesRoads

Outbound and SDR services

SalesRoads provides outsourced B2B lead generation, appointment setting and SDR teams that make outbound calls and emails for companies that want more sales pipeline.

SeeResponse

Demand generation, ABM, SEO, Outbound and SDR services

SeeResponse is a B2B marketing agency in McLean, VA that runs SEO, email, demand generation, ABM, outbound and HubSpot work for companies that sell to other businesses.