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 × Restaurants ×
  • Protel BPO, nothing matters more than how your customers view your brand how they interact with it

    Protel BPO provides inbound voice, outbound voice, live chat, and back-office outsourcing from two call center locations in Belize, operating in US Central and Mountain time zones with native English and bilingual Spanish agents. Since 2012, it has served retail, healthcare, and travel clients...

    Top Services:

    • Call Centers
    • BPO
    • Customer Support
    • Phone Answering Services
    • Show more
    Location
    Belize City, Belize
    Number of Employees
    500 - 999
    Average Hourly Rate
    $14/hr
    Minimal Budget
    $50,000 & Up
  • Developing Companies That Endure

    Agency Y provides cold calling, appointment setting, and email marketing services for small and medium-sized businesses. Operating from Skopje, Macedonia with agents trained for US and Canadian markets, the agency offers both hourly and performance-based cold calling pricing with no contracts...

    Top Services:

    • Call Centers
    • BPO
    • Customer Support
    • Email Marketing
    • Market Research
    • Show more
    Location
    Skopje, Macedonia
    Number of Employees
    Under 49
    Average Hourly Rate
    $17/hr
    Minimal Budget
    Under $1,000
    Portfolios Count
    3 Projects Listed
  • Apps, Websites, Dashboards & Games

    SeenTK is a Syrian software development company building websites, mobile apps, admin dashboards, e-commerce platforms, and Unity games. We help startups and businesses turn ideas into reliable digital products with clean UI/UX, scalable code, testing, deployment, and ongoing support...

    Top Services:

    • Design Services
    • Web Design
    • eCommerce Development
    • Web Development
    • Software Testing
    • Show more
    Location
    Damascus, Syria
    Number of Employees
    Under 49
    Average Hourly Rate
    $30/hr
    Minimal Budget
    Under $1,000
  • Hire Filipino VAs That Actually Deliver.

    Dedicated virtual assistants and full phone teams, matched in 3 to 5 days, managed daily by our team, and backed by a 110-Day Guarantee. You run the business. We run the team...

    Top Services:

    • BPO
    • Customer Support
    • Call Centers
    Location
    Quezon City, Philippines
    Number of Employees
    50 - 99
    Portfolios Count
    1 Project Listed
  • Simplifying Your Digital Needs With Unlimited Skills

    Protovo Solutions is an experienced and reliable group of digital engineers, problem solvers, thinkers, consultants, and all-around specialists. We believe in providing one-of-a-kind solutions to everyone of our customers, since we are the creators of human experience. Our mission is to simplify the...

    Top Services:

    • CRM Consulting
    • Software Development
    • eCommerce Development
    • Digital Services
    • Web Development
    • Show more
    Location
    Bhilwara, India
    Number of Employees
    Under 49
    Average Hourly Rate
    $20/hr
    Minimal Budget
    $1,000 - $10,000
    Portfolios Count
    4 Projects Listed
  • Yes We Care

    NEWTEL is a premier BPO provider delivering exceptional omnichannel call center, live chat, and social media support. We combine elite customer service with advanced content moderation to secure and scale your digital brand 24/7...

    Top Services:

    • BPO
    • Call Centers
    • Software Testing
    • Customer Support
    • HR Outsourcing
    • Show more
    Location
    Amman, Jordan
    Number of Employees
    500 - 999
    Average Hourly Rate
    $20/hr
    Minimal Budget
    $50,000 & Up
  • Leading Virtual Assistant Services Provider

    Express Virtual Assistant (EVA) is a globally managed virtual workforce solutions provider that helps businesses streamline operations through structured, performance-driven support systems. Founded in 2004 as a subsidiary of Flatworld Solutions, EVA goes beyond traditional outsourcing by offering a...

    Top Services:

    • BPO
    Location
    Princeton, New Jersey
    Number of Employees
    1000 & Up
    Average Hourly Rate
    $8/hr
  • Brisk Web Services: Your Accelerator in the Digital Race.

    Brisk Web Services serves as your accelerator in the digital race, offering tailored strategies, measurable results, and a fervent commitment to driving businesses forward in the online realm. With a focus on delivering customized solutions and tangible outcomes, we are dedicated to propelling our clients to...

    Top Services:

    • Digital Services
    • Branding
    • Logo Design
    • Web Design
    • WordPress Website Design
    • Show more
    Location
    Ćuprija, Serbia
    Number of Employees
    Under 49
    Average Hourly Rate
    $10/hr
    Minimal Budget
    Under $1,000
  • UK Operations Partner

    AtDesk is a UK-focused operations partner helping service businesses manage calls, customer support, dispatch, CRM and administrative workflows with clear reporting and accountable human support...

    Top Services:

    • Phone Answering Services
    • Customer Support
    • BPO
    • Call Centers
    • Business Consulting
    • Show more
    Location
    Blackburn, United Kingdom
    Number of Employees
    50 - 99
    Average Hourly Rate
    $15/hr
    Minimal Budget
    Under $1,000

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
129,003+
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
9

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.