Callbox, Martal Group, CIENCE, TeleDirect, Leadium - these are among the top telemarketing companies sales teams rely on to generate qualified leads, increase conversion rates, and build consistent pipelines through targeted outreach and performance-driven communication strategies.

Organic rankings are determined by five factors: top services, reviews, portfolio, awards/press, and team expertise. Sponsored listings pay for a placement that appears above organic positions. Sponsorship does not affect star ratings or review content - read more on our methodology page.

Telemarketing × Other × $1,000 - $10,000 ×Clear Filters
  • See Differently

    Mirrorline Marketing is a marketing agency and sales coaching company. We create, build and scale businesses in any industry, worldwide, combining strategy, branding, websites, ads and SEO with real sales training...

    Top Services:

    • Logo Design
    • Digital Strategy
    • Branding
    • eCommerce Development
    • WordPress Website Design
    • Show more
    Location
    Sheridan, Wyoming
    Number of Employees
    Under 49
    Average Hourly Rate
    $100/hr
    Minimal Budget
    $1,000 - $10,000
  • Redefining Customer Experience

    Top Customer Service is an AI-assisted call center and BPO company, combining human agents with AI tools to deliver 24/7 inbound call handling, outbound support, live chat, and virtual assistant services. The agency caters to clients across eCommerce, media, entertainment, and automotive sectors...

    Top Services:

    • Customer Support
    • Call Centers
    • BPO
    • Phone Answering Services
    • Show more
    Location
    Albany, New York
    Number of Employees
    500 - 999
    Average Hourly Rate
    $10/hr
    Minimal Budget
    $1,000 - $10,000
    Portfolios Count
    26 Projects Listed
  • Professional Multilingual Communication And Support At Scale

    Fluency LLC provides a comprehensive suite of human-led call center services designed to bridge communication gaps and enhance customer experience. Based in Columbus, Ohio, we specialize in high-stakes environments where linguistic precision and cultural empathy are essential...

    Top Services:

    • Call Centers
    • BPO
    • Translation Services
    • Customer Support
    • Phone Answering Services
    • Show more
    Location
    Hilliard, Ohio
    Number of Employees
    Under 49
    Minimal Budget
    $1,000 - $10,000
    Portfolios Count
    2 Projects Listed
  • Simplify Sales Process, Amplify Your Success.

    AsterSense provides tailored CRM solutions, contact centre services, and WhatsApp integrations to enhance business efficiency, customer engagement, and growth...

    Top Services:

    • CRM Consulting
    • Call Centers
    Location
    Singapore, Singapore
    Number of Employees
    Under 49
    Average Hourly Rate
    $50/hr
    Minimal Budget
    $1,000 - $10,000
  • Bringing people and technology together.

    Cavinolr Recruiters specializes in connecting top-tier talent with organizations in CS, Retention , sales, life sciences, healthcare, and biotechnology sectors. The firm combines industry expertise with personalized strategies to deliver exceptional recruitment solutions tailored to clients' unique needs...

    Top Services:

    • BPO
    • Phone Answering Services
    • Translation Services
    • Customer Support
    • Show more
    Location
    Plantation, Florida
    Number of Employees
    250 - 499
    Average Hourly Rate
    $12/hr
    Minimal Budget
    $1,000 - $10,000

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Every agency is independently vetted before it can be listed or ranked

1

Identity Check

We verify businesses and reviewer LinkedIn profiles for integrity.

Agencies vetted
129,759+
2

Portfolio Review

We review agency work, case studies, and results to confirm skill.

Applicants rejected
47%
3

Ongoing Audit

We monitor listings regularly; outdated agencies are removed.

Agencies verified
5

Some agencies pay for sponsored placement, clearly labeled and held to the same vetting standards.

See how rankings and monetization work.

5 Frequently Asked Questions About Telemarketing Firms

What do telemarketing companies do?

Telemarketing agencies use phone-based direct marketing to sell products, generate leads, or book appointments on behalf of businesses, performing both outbound and inbound calls to grow sales pipelines and client relationships. 

As all telemarketing interactions involve direct human contact, the approach allows them to influence potential customers’ opinions, purchasing habits, or perceptions toward a brand. 

What services do telemarketing firms provide?

Telemarketing services for businesses can be split into two main categories: inbound and outbound.  

  • Inbound telemarketing services cover customer support calls, namely technical support, order taking, billing inquiries, upselling, and virtual receptionist service, to name a few. They can support both B2B and B2C companies. 
  • Outbound telemarketing services, also referred to as proactive outreach, are intended to boost businesses’ bottom line. This category comprises several different service types, including lead qualification, appointment setting, cold calling, customer reactivation, and more. 

B2B telemarketing companies are often hired to assist non-profit organizations in soliciting donations or to collect debt and follow up on overdue accounts on behalf of other businesses.   

How much do telemarketing agencies charge for their services?

Telemarketing agencies charge between $7 and $75 per hour for their services. The service cost can also vary based on location (offshore vs. onshore), campaign complexity, duration, and agent experience, with B2B telemarketing campaigns often costing more than B2C.  

Other common pricing models include: 

  • Per-lead: $35 to $60 per qualified lead 
  • Flat-rate: $650+ for a 4-week campaign 
  • Commission-based: 5% to 20% of each closed sale 

How long do telemarketing campaigns take?

Telemarketing campaigns usually take a few months, as lead nurturing takes multiple phone calls for telemarketers to engage with a prospect and close a sale.  

Although initial lead generation begins within the first few weeks, for a full, effective cycle, the campaigns are run between 3 and 6 months. The average campaign takes about 14 weeks to reach an optimum level of opportunities per day. The length also depends on the campaign type:  

  • Pilot and trial campaigns: Usually run for 10 to 12 weeks to test the market, refine the pitch, and validate traction. 
  • Short campaigns: 4 to 6 weeks for time-sensitive promotions or event registrations. 
  • Long-term campaigns: 6 months to over a year for slow B2B sales cycles that require more lead nurturing. 

What kind of ROI can businesses expect from telemarketing campaigns?

 Lucrative telemarketing campaigns often result in a 5:1 to 10:1 return on investment (ROI), meaning $5 to $10 in revenue for every $1 spent. The return rate depends on the quality of the call lists, the persuasion skill of the callers, the product, the offer, and whether it's part of a multi-channel strategy. Notably, ROI grows over time through stronger customer retention and better targeting informed by feedback from calls.