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
7 Companies-Rankings updated: September 04, 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 View All Reviews
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 View All Reviews
LHB Consulting, a London-based lead generation agency with two decades of experience, specializes in a range of services, including telesales, telemarketing, appointment scheduling, the creation and follow-up of email marketing campaigns, and data cleansing...
Top Services:
Call Centers
Digital Marketing
Location
Uxbridge, United Kingdom
Number of Employees
Under 49
Average Hourly Rate
$50/hr
Minimal Budget
Under $1,000
LHB Consulting Services
Call Centers
Digital Marketing
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
FSL Events
GT Associates
Dolphin Group
Top Brand Cars
Manor House Autos
Route Trader
Tiger Like Events
Data sourced from the agency's DesignRush profile
LHB Consulting Reviews & Testimonials
George Webb Review from Google
1.0★
George Webb's Review Sourced from Google
*** SCAM ALERT ***I strongly advise staying away from this organisation. Ernest comes across as a nice person however he is extremely unprofessional and will not follow through on any professional or financial promises. PLEASE DO NOT USE.
Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
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
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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 View All Reviews
Elevate your online presence with UseCodify, your partners in web design and digital marketing. We specialize in creating captivating websites and boosting your visibility through SEO and innovative strategies. Let us help you stand out, connect with your audience, and achieve your digital dreams...
Top Services:
Web Development
eCommerce Development
WordPress Website Design
Software Development
Mobile App Development
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Location
Berlin, Germany
Number of Employees
Under 49
Average Hourly Rate
$16/hr
Minimal Budget
Under $1,000
Portfolios Count
6 Projects Listed
UseCodify Services
Web Development
eCommerce Development
WordPress Website Design
Software Development
Mobile App Development
IT Services
IT Compliance Solution
Business Consulting
Customer Support
Market Research
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
SlimeBox
Dakea
HSR Active Furniture
SkylineBuilds
Frankiestrona
Club360
Ayu Healing
Kiddoways
Data sourced from the agency's DesignRush profile
UseCodify Reviews & Testimonials
frankiesushisite Review from Google
5.0★
frankiesushisite's Review Sourced from Google
It was a real pleasure to work with UseCodify to create the frankiestrona website. Their creative approach and attention to detail perfectly reflected my vision. Communication was smooth and regular, so I was always up to date. The project was delivered on time, exceeding my expectations in terms of professionalism and ease of use. I highly recommend UseCodify for their expertise and commitment to quality.
Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
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 View All Reviews
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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