Independent list · re-checked September 28, 2026 · published by Primortul LLC

Callbox

Callbox is a B2B lead generation and appointment setting company headquartered in Encino, California, founded in 2004, with more than 700 full-time staff across six offices in the US, Australia, Singapore, Malaysia, Colombia and the Philippines. It runs multichannel outbound campaigns, account-based marketing, event marketing and outsourced SDR teams, and says it has served more than 15,000 companies in over 60 countries. Its site lists Clutch's Top Lead Generation Company 2026, a G2 Grid Leader placement and a HubSpot Gold badge. Nobody pays to be ranked.

Why it’s hereTwenty years of operation and 128 Clutch reviews, at a headcount that ranks it among the largest US-headquartered appointment-setting firms. Number 2 of the lead generation companies in the US.

Who leads itRom Agustin, CEO.

Published pricing
  • Estimated $16,000 to $32,000 per month per campaign pod (one dedicated SDR plus multichannel outreach), per its pricing page; exact quotes after consultation.

A fit forB2B companies that want an outsourced SDR team running calls, email and other outreach to book meetings, from a firm founded in 2004 with 700+ staff across six offices.

Based in
Encino, CA
Founded
2004
Team size
500+ people
Led by
Rom Agustin, CEO
Known for
B2B lead generation · appointment setting · account-based marketing · outsourced SDR teams · event and webinar marketing
Named clients
Google, AWS, SAP, Microsoft, LinkedIn, Intel, HP, DHL, Fortinet
Best for
B2B companies that want an outsourced SDR team running calls, email and other outreach to book meetings, from a firm founded in 2004 with 700+ staff across six offices.
Published pricing
  • Estimated $16,000 to $32,000 per month per campaign pod (one dedicated SDR plus multichannel outreach), per its pricing page; exact quotes after consultation.
Callbox homepage, captured September 28, 2026
callboxinc.com · homepage on September 28, 2026

Sources callboxinc.com, clutch.co · LinkedIn ↗

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