Updated August 2026
Callbox logoCallbox | Cold email in United States
About Callbox
Global B2B lead generation company providing multi-channel outbound marketing, appointment setting, database services and sales support across multiple regions.
Services listed
Publicly listed services for Callbox in this directory:
Who this listing is for
B2B founders, sales leaders, and marketers comparing outbound agencies in United States — especially teams evaluating cold email, or considering ScaliQ as in-house LinkedIn outreach software instead of outsourcing.
Agency vs ScaliQ
CallboxOutsourced prospecting and booking, run by an external team.
ScaliQPersonalized LinkedIn outreach, follow-ups, and replies from your own accounts.
Callbox delivers fully managed lead generation services using large sales teams, whereas ScaliQ is an AI software platform for internal prospecting.
Alternatives and similar agencies
Other directory listings that may fit a similar outbound brief. Not a ranking — compare profiles and public contact links.
CIENCE Technologies logoCIENCE Technologies
United States
Managed GTM execution company combining AI, audience data, SDR teams and outbound campaigns to generate qualified pipeline for B2B companies.
Belkins logoBelkins
United States
B2B appointment-setting and revenue growth agency delivering outbound sales, lead generation and SDR services for companies worldwide.
SalesHive logoSalesHive
United States
B2B sales agency providing outsourced SDR teams, cold email campaigns, appointment setting and sales development supported by proprietary technology.
Looking for an alternative to hiring a lead generation agency?
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LinkedIn outreach, follow-ups, and reply handling directly from your account.
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