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.
Best Telemarketing Firms
10 Companies-Rankings updated: September 05, 2026
DesignRush evaluates all telemarketing firms based on their expertise, success stories, and verified client reviews. Some listings may be paid.
VerifiedVerified by the DesignRush team for authenticity and credibility.
All-In-One E-commerce Technology Solution Provider: Because Every Click Matters.
Vserve Ebusiness Solutions is an AI-powered Supply Chain Management and Ecommerce company with 10+ years of global delivery. We provide offshore teams, BPO, procurement, order and inventory management, customer support, and ecommerce solutions to reduce costs and improve efficiency...
Top Services:
Logistics
Accounting
eCommerce Development
BPO
Call Centers
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Location
New York City, New York
Number of Employees
500 - 999
Average Hourly Rate
$25/hr
Minimal Budget
Under $1,000
Portfolios Count
1 Project Listed
Vserve Ebusiness Solutions Services
Logistics
Accounting
eCommerce Development
BPO
Call Centers
Web Design
eCommerce
SEO
Customer Support
Phone Answering Services
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Traci Miller
Marcia Maples
Joseph Powell
Data sourced from the agency's DesignRush profile
Vserve Ebusiness Solutions Reviews & Testimonials
Marie M. Harris
Undisclosed at Retail
5.0★
Customer Support Review from Marie M. Harris
Although we have been struggling before, after expanding our influence into mountain wear and watches, it became evident that we needed some professional help. We were offering many new products, and making matters worse, we were present in different foreign markets, which mean many competitors to keep an eye on. After some consultations with the Vserve team, we had no doubts that they were the solution we had been looking for. Thanks to their proven MAP enforcement strategies, maintaining our market position is now easier. We always have accurate pricing information at our fingerprints. I must say, we are really impressed with Vserve.
Danielle W
Undisclosed at Retail
5.0★
Customer Support Review from Danielle W
Our company is grateful to have found a collaborative team in Vserve for our Product Information Management. Initially, we were unsure about the quality of product descriptions and their accessibility to our buyers. However, Vserve’s expertise in programming language and business best practices helped us to manage our complete product information and catalog pretty well. The conversion rate excelled our expectations, and our products shot up on Google rankings!
Reviews verified by DesignRush and sourced from the agency's profile
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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
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Location
Skopje, Macedonia
Number of Employees
Under 49
Average Hourly Rate
$17/hr
Minimal Budget
Under $1,000
Portfolios Count
3 Projects Listed
Agency Y Services
Call Centers
BPO
Customer Support
Email Marketing
Market Research
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Bike Exchange
Newell's Express Worldwide Logistics
Zero Defect Manufacturing
Kairos Promotional Agency
Essinta
Woolco Foods
Data sourced from the agency's DesignRush profile
Agency Y Reviews & Testimonials
Jimmy Mancini
Owner at Mancini Corp
5.0★
Lead Generation Review from Jimmy Mancini
I recently engaged with Agency Y for their cold calling services, and I am beyond impressed with the results. From the outset, their team exhibited a high level of professionalism and expertise that set them apart
Mark Stone
Managing Director at Mark Stone Advisory
5.0★
Lead Generation Review from Mark Stone
They helped us with cold calling and closed a decent number of clients. Will hire them again.
Cristiana Galbiati
Review from Google
5.0★
Cristiana Galbiati's Review Sourced from Google
I had the pleasure of working with Milan and his agency for telemarketing services for my Christmas light installation business, and I couldn't be more satisfied. They were punctual, precise, and incredibly well-organized. Milan was my main point of contact, and he ensured that every request was met with professionalism and efficiency. The quality of leads generated was impressive, and the entire experience was seamless. I highly recommend this agency for anyone looking for reliable and effective telemarketing services.
Reviews verified by DesignRush and sourced from the agency's profile
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US-Based Outbound SDR Agency. Boutique. Multi-Channel. Real Pipeline.
Leadium builds each engagement around channel-optimized lead research, identifying whether each prospect is best reached by phone, email, or LinkedIn before outreach begins. Thefirm provides outbound and inbound appointment setting, cold calling, data sourcing, and deliverability management...
Top Services:
Email Marketing
BPO
CRM Consulting
Business Consulting
Direct Marketing
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Location
Las Vegas, Nevada
Number of Employees
50 - 99
Average Hourly Rate
$50/hr
Minimal Budget
Under $1,000
Leadium Services
Email Marketing
BPO
CRM Consulting
Business Consulting
Direct Marketing
Customer Support
Market Research
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Square
Rackspace
Microsoft
LG
DirecTV
OSRAM
Time Logistics
Palo Alto Networks
Amada Senior Care
brightwheel
Data sourced from the agency's DesignRush profile
Leadium Reviews & Testimonials
Scott Proffitt
VP of Sales at Energy Assurance
5.0★
AI Marketing Review from Scott Proffitt
Our monthly leads have gone up by 3x with Leadium. This allows us to focus on production efficiencies.
Sam Jennings
Sales Manager at Best Bees Company
5.0★
Call Centers Review from Sam Jennings
Finding Leadium changed the way our team operates. They've been able to fill our pipeline with the people we want to talk to so we can focus on beekeeping.
Marcos Moura
Founder and COO at Amada Senior Care
5.0★
Call Centers Review from Marcos Moura
Leadium is able to speak to our prospects as if they're Amada themselves. They're filling our pipeline in a way we couldn't!
Reviews verified by DesignRush and sourced from the agency's profile
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BPO Company India | Call Center Outsourcing | Ascent BPO
Ascent BPO Services focuses on delivering quality call center outsourcing and customer care services. Our dedication to client satisfaction ensures high‑quality results in data entry, conversion, and support...
Top Services:
BPO
Call Centers
Business Consulting
HR Outsourcing
Customer Support
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Location
Noida, India
Number of Employees
100 - 249
Average Hourly Rate
$50/hr
Minimal Budget
Under $1,000
Portfolios Count
3 Projects Listed
Ascent BPO Services Services
BPO
Call Centers
Business Consulting
HR Outsourcing
Customer Support
Phone Answering Services
SEO
Cloud Consulting
Web Development
Digital Marketing
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Guwahati University
Silver Pumps & Motors
Pradhan Mantri Kaushal Vikas Yojana
IndiaMART
HDFC Bank
Data sourced from the agency's DesignRush profile
Ascent BPO Services Reviews & Testimonials
Ankit Kumar
Review from Google
1.0★
Ankit Kumar's Review Sourced from Google
I passed the interview at Asant Bapo but was late on the second day. I was thrown out for 20 minutes and asked to take leave.
Kanchan Srivastav
Review from Google
5.0★
Kanchan Srivastav's Review Sourced from Google
We've been working with Ascent BPO for the past few months, and I must say their service has exceeded our expectations. The team is professional, responsive, and consistently delivers high-quality results. From data entry to back-office support, their attention to detail and commitment to deadlines has really helped streamline our operations. Communication has been smooth, and any issues are quickly addressed. Highly recommend them if you're looking for a reliable and efficient BPO partner.
Vikas Srivastav
Review from Google
5.0★
Vikas Srivastav's Review Sourced from Google
Ascent bpo has truly exceeded our expectations. Their team is efficient, professional, and dedicated to providing high - quality services. They've helped streamline our processes and allowed us to focus on core operation. Highly recommended
Reviews verified by DesignRush and sourced from the agency's profile
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A global Digital Marketing Agency helping brands streamline and scale their business with bespoke SEO, Social Media Marketing, PPC, Email Marketing, Content Marketing, Database generation, Lead Generation, Branding, and Website development solutions.
We help you grow your business online...
Top Services:
SEO
Digital Marketing
WordPress Website Design
Digital Services
Social Media Marketing
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Location
Pune, India
Number of Employees
Under 49
Average Hourly Rate
$15/hr
Minimal Budget
Under $1,000
Espial Solutions Services
SEO
Digital Marketing
WordPress Website Design
Digital Services
Social Media Marketing
Content Marketing
Email Marketing
PPC
Customer Support
eCommerce
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
TelerainMD
Boomerang Transportation
Bow and Baan Technology Services Pvt. Ltd.
Data sourced from the agency's DesignRush profile
Espial Solutions Reviews & Testimonials
Ahmed Iqbal Khan
Senior O&M Engineer at Amin Renewable Energy Company SAOC at Amin Renewable Energy Company SAOC
5.0★
PPC Review from Ahmed Iqbal Khan
Espial worked for us to deliver quality leads through PPC campaigns. Our challenge was that we hardly had 1% conversion from all the clicks that we were getting through Google Adwords. Within a month our lead to conversion increased from 1% to 5%, that was a remarkable achievement. They know which design and content works best. The level of communication and responsiveness that we receive from them makes them incredibly easy to work with.
Saurabh Agarwal
IT Manager at TelerainMD Inc
5.0★
SEO Review from Saurabh Agarwal
We are very satisfied with the services received so far in these 7 months. Because of Espial Solution's efforts, the site's traffic boosted and most keywords used got high-rankings on Google search. As a result, the client receives more organic conversions and customer satisfaction. The team is very professional and punctual.
Rajeev Mehta
President at Medical Transportation Company
5.0★
Digital Marketing Review from Rajeev Mehta
Working with them is quite fluid, they are available 24 hours of the day. Thanks to the work of Espial Solutions, website traffic increased and sales grew by almost 50%. The workflow is fluid, as the team is available all day. The client is impressed with the analytical way that Espial Solutions did their work, studying the business model first before starting.
Reviews verified by DesignRush and sourced from the agency's profile
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We aim to be Asia's largest consumer and business data asset owner and to provide high-impact digital marketing services, serving clients that demand high return-on-investment marketing results.
Powered by data, we help businesses implement a successful digital marketing campaign through email marketing, SMS...
Top Services:
Digital Marketing
Email Marketing
SEO
Social Media Marketing
Call Centers
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Location
Petaling Jaya, Malaysia
Number of Employees
Under 49
Minimal Budget
Under $1,000
Wave Evolution Services
Digital Marketing
Email Marketing
SEO
Social Media Marketing
Call Centers
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Denave is a B2B sales enablement organization based in Malaysia that offers a complete range of demand generation and lead generation solutions. Denave offers services including Business process outsourcing, digital marketing and B2B data services...
Top Services:
Digital Marketing
Event Marketing
Call Centers
Customer Support
Email Marketing
Show more
Location
Kuala Lumpur, Malaysia
Number of Employees
1000 & Up
Average Hourly Rate
$50/hr
Minimal Budget
Under $1,000
Portfolios Count
1 Project Listed
Denave Services
Digital Marketing
Event Marketing
Call Centers
Customer Support
Email Marketing
Business Consulting
Social Media Marketing
Direct Marketing
Advertising
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Lenovo
Saint Gobain
Marg
Data sourced from the agency's DesignRush profile
Denave Reviews & Testimonials
Rutteren Morgan
Review from Google
1.0★
Rutteren Morgan's Review Sourced from Google
I recently attended an interview with Denave for a Talent Acquisition role, and it was a disappointing experience. The interviewer Shalini (Global HR) demonstrated a lack of professionalism throughout the session.
I felt I was not given a fair chance to express myself, as the interviewer appeared more interested in steering the conversation to her preferences. Additionally, I was surprised by her comments about my career transitions, especially since her profile suggests similar patterns.
The session was further marred by poor etiquette, such as answering phone calls during the interview. As someone with extensive experience in recruitment, I expected a higher standard of professionalism from a company like Denave. This experience has raised concerns about their commitment to a candidate-focused hiring process.
Vy Ro Cam
Review from Google
5.0★
Vy Ro Cam's Review Sourced from Google
It's has been 8 months now since I joined the company, such a great team ever. Co-workers are friendly, Team leaders are very supportive and thoughtful. HR team, IT team always response immediately when ever have an issue. :)
NGUYEN TRAM
Review from Google
5.0★
NGUYEN TRAM's Review Sourced from Google
October 2021 will mark my 6th anniversary of my employment at Denave.
Something that I have experienced in Denave is the encouragement for growths.
I have moved up over 6 years in Denave. When I joined Denave I didn’t see myself as a manager, and now I manage multiple people. And I was only able to do that through the support from my team and the encouragement of my managers .
It has been a great journey to me and I am proud to be a part of Denave family.
Reviews verified by DesignRush and sourced from the agency's profile
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Looking for a Reliable AI-Driven Outsourced Call Center in Indonesia? Callindo Delivers Top-notch Services to Enhance Your Customer Experience and Boost Your Business...
Top Services:
BPO
Customer Support
Market Research
Business Consulting
Call Centers
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Location
Jakarta, Indonesia
Number of Employees
50 - 99
Average Hourly Rate
$24/hr
Minimal Budget
Under $1,000
Callindo Services
BPO
Customer Support
Market Research
Business Consulting
Call Centers
Phone Answering Services
Cloud Consulting
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
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
MetaFussion Services
Digital Services
Web Development
Digital Marketing
Mobile App Development
Business Consulting
BPO
Social Media Marketing
eCommerce Development
Graphic Design
Logo Design
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Adam Master Movers
Atlantic Moving
Mk Furniture
Gm Abatements
Data sourced from the agency's DesignRush profile
MetaFussion Reviews & Testimonials
Jemnii Wrost
Review from Google
5.0★
Jemnii Wrost's Review Sourced from Google
Metafussion will assit you in growing your online business.
They offer guidance and strategy while I focus on running my day-to-day operations.
Highly recommended!
Reviews verified by DesignRush and sourced from the agency's profile
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Empowering Customer Experience with AI and Human Expertise-Customized Care Solutions by D3Mynds.
Empowering Customer Experience with AI and Human Expertise-Customized Care Solutions by D3Mynds. Where AI Meets Human Touch D3Mynds Delivers Customized Customer Care Solutions for a New Era...
Top Services:
BPO
Business Consulting
Call Centers
Phone Answering Services
Customer Support
Show more
Location
Delhi, India
Number of Employees
Under 49
Average Hourly Rate
$10/hr
Minimal Budget
Under $1,000
D3Mynds Services
BPO
Business Consulting
Call Centers
Phone Answering Services
Customer Support
Transcription Services
HR Outsourcing
Market Research
Accounting
Translation Services
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
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.
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