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 × Real Estate ×
  • The World's Top Talent for Remote Teams!

    1840 & Company is a global provider of talent and team solutions devoted to empowering businesses with scalable, on-demand workforce solutions. With a stringent verification procedure and a network of professionals in 150 countries, we connect organizations with remote talent of the highest caliber. Our...

    Top Services:

    • BPO
    • Staff Augmentation
    • HR Outsourcing
    • Customer Support
    • Call Centers
    • Show more
    Location
    Overland Park, Kansas
    Number of Employees
    500 - 999
    Average Hourly Rate
    $10/hr
    Minimal Budget
    $10,000 - $25,000
  • Sales, PR & Marketing agency for tech companies.

    We make your inbound and outbound sales channels work equally well...

    Top Services:

    • Digital Marketing
    • Customer Support
    • Business Consulting
    • SEO
    • PPC
    • Show more
    Location
    Tallinn, Estonia
    Number of Employees
    Under 49
    Average Hourly Rate
    $50/hr
    Minimal Budget
    $1,000 - $10,000
  • The first and only Filipino-owned talent & revenue execution firm.

    TRACTIONCORE is the first and only Filipino-owned talent and revenue execution firm. We dont just rent seats; we deliver outcome-driven systems. Backed by a decade of experience, we build, vet, and manage high-performing global teams powered by human-AI synergy. From fractional experts to fully built...

    Top Services:

    • BPO
    • AI Development
    • HR Outsourcing
    • Accounting
    • Software Development
    • Show more
    Location
    Quezon City, Philippines
    Number of Employees
    50 - 99
    Average Hourly Rate
    $5/hr
    Minimal Budget
    Under $1,000
  • Keeping Things Simple

    Infuse your everyday tasks with a real-time, virtual acuity.Task Virtual's team of experts has the timing and expertise to deliver your business needs—from daily duties to big projects requiring quality completion.Empower yourself in this new age digital world where our highly skilled professionals...

    Top Services:

    • SEO
    • Social Media Marketing
    • Customer Support
    • Web Development
    • Graphic Design
    • Show more
    Location
    Kolkata, India
    Number of Employees
    100 - 249
    Average Hourly Rate
    $6/hr
  • Where Ideas Turn Into Scalable Products.

    CoderzHub is a digital agency that offers services ranging from website development, mobile app development, custom software developement and digital marketing...

    Top Services:

    • Mobile App Development
    • Web Development
    • eCommerce Development
    • Software Development
    • WordPress Website Design
    • Show more
    Location
    Plano, Texas
    Number of Employees
    Under 49
    Average Hourly Rate
    $25/hr
    Minimal Budget
    $1,000 - $10,000
  • Ultimate Technology Partner.

    MetaFussion is a dynamic digital company driven by a passion for crafting innovative software solutions tailored to meet the evolving needs of businesses. Our comprehensive services, including SEO, SMM, web development, and PPC campaigns, empower clients to thrive in today's fast-paced digital environment...

    Top Services:

    • Digital Services
    • Web Development
    • Digital Marketing
    • Mobile App Development
    • Business Consulting
    • Show more
    Location
    Brampton, Canada
    Number of Employees
    50 - 99
    Average Hourly Rate
    $10/hr
    Minimal Budget
    Under $1,000
  • Delivering Work With Faith

    Capanicus is VoIP Call Center Software development Company, Our Team has 16+ years of exprience in software development, technology, consulting, system integration, cloud computing, mobile app development, and data analytics. Our team make sure sure that your business prospers in digital era by combining the...

    Top Services:

    • AI Development
    • IoT
    • Mobile App Development
    • Software Development
    • Call Centers
    • Show more
    Location
    Mohali, India
    Number of Employees
    50 - 99
    Average Hourly Rate
    $25/hr
    Minimal Budget
    $1,000 - $10,000
    Portfolios Count
    2 Projects Listed
  • Conversation Intelligence for Modern Enterprises

    Make every call a useful conversation with Oli AI, an enterprise AI voice agent for inbound and outbound calls. From welcoming callers and booking appointments to qualifying leads and managing customer follow-ups, Oli AI adapts to your workflows across 22+ global languages. It connects with your business...

    Top Services:

    • Call Centers
    • BPO
    • Phone Answering Services
    • Customer Support
    • Show more
    Location
    Chennai, India
    Number of Employees
    Under 49
    Average Hourly Rate
    $1/hr
  • Realise your potential

    We are one of India's leading contact centre company catering to US, UK, Australia, India, Middle East & South East Asia markets. Our core domains are Fintech, Healthtech, Edtech, Wellness, Healthcare, Ecommerce, FMCG, BFSI, Education among other domains...

    Top Services:

    • Call Centers
    • BPO
    • Phone Answering Services
    • Customer Support
    • Business Consulting
    • Show more
    Location
    Navi Mumbai, India
    Number of Employees
    1000 & Up
    Average Hourly Rate
    $10/hr
    Minimal Budget
    $1,000 - $10,000
  • Build. Deploy. Manage. Scale.

    Ruminative is a BPO and Operations Management company helping businesses build, manage, and scale dedicated teams across customer support, sales, backend operations, field activities, and verification services. With an in-house operational setup and multi-region capabilities, we provide flexible outsourcing...

    Top Services:

    • BPO
    • Logistics
    • Phone Answering Services
    • Customer Support
    • Call Centers
    • Show more
    Location
    Gurgaon, India
    Number of Employees
    50 - 99
    Average Hourly Rate
    $11/hr

Why companies trust DesignRush

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
129,495+
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
60

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.