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
5 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.
America's best phone answering service taking care of your callers
Moneypenny is a call center provider that staffs 24/7 answering services and contact center outsourcing for businesses across legal, healthcare, real estate, finance, and home services, with bilingual receptionists, appointment scheduling, call dispatch, and CRM integration included...
Top Services:
Call Centers
Phone Answering Services
Customer Support
Location
Duluth, Georgia
Number of Employees
1000 & Up
Minimal Budget
Under $1,000
Portfolios Count
4 Projects Listed
Moneypenny USA Services
Call Centers
Phone Answering Services
Customer Support
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Critter Control
The Federal Savings Bank
Sterne Kessler
BMW
Keller Williams
The Glass Guru
Eagle Biosciences
Charleston Heating & Air
Data sourced from the agency's DesignRush profile
Moneypenny USA Reviews & Testimonials
Eric Martin Owner at Undisclosed
5.0★
Call Centers Review from Eric Martin
The salesman, Luke?, was very responsive and knowledgeable, a true professional. On boarding with Bailey, was easy and very thorough. Getting on board with an answering service had a lot more detail than I expected and Bailey was very patient and did not rush the process.
Benjamin Rose CEO at Undisclosed
5.0★
Call Centers Review from Benjamin Rose
I needed to get two new numbers set up quickly and Marti Ramirez was able to immediately help me out immediately. Also, Marti had some great suggestions for the scripting that was greatly appreciated. He even went above and beyond to check my multiple other accounts to make sure everything was OK with them. Marti is definitely an employee that goes above and beyond. Thanks again Marti!
Benjamin Rose Founder at Undisclosed
5.0★
Phone Answering Services Review from Benjamin Rose
I needed to get two new numbers set up quickly and Marti Ramirez was able to immediately help me out immediately. Also, Marti had some great suggestions for the scripting that was greatly appreciated. He even went above and beyond to check my multiple other accounts to make sure everything was OK with them. Marti is definitely an employee that goes above and beyond. Thanks again Marti!!
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
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 View All Reviews
Alegta empowers creative agencies and individuals to showcase their work and connect with clients, offering the best digital marketing and IT solutions backed by 18 years of industry experience...
Top Services:
Branding
Digital Strategy
Web Design
WordPress Website Design
SEO
Show more
Location
Hyderabad, India
Number of Employees
Under 49
Average Hourly Rate
$10/hr
Minimal Budget
Under $1,000
Portfolios Count
7 Projects Listed
Alegta Services
Branding
Digital Strategy
Web Design
WordPress Website Design
SEO
Digital Marketing
Social Media Marketing
Call Centers
Customer Support
IT Services
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Sammy's Dreamland
Hootone Remedies
CureHBV
Sammy's Luxury Furniture
UpYard
Highercaps
Fayda
Bsts
TaqGen
Al Baik
Data sourced from the agency's DesignRush profile
Alegta Reviews & Testimonials
Cure HBV Review from Google
5.0★
Cure HBV's Review Sourced from Google
Social Media Marketing became 100x profitable to us after collaborating with Alegta! I want to thank their team for Fast Support and Creating Awareness about our Medical Supplements.
Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
LMS is unique in her way of operating. We implement High Performance Work Systems, driven by innovative thinking. This allows us to prioritize the Quality and Quantity of our services. Our skilled workforce is eager to get the job done!...
Top Services:
Call Centers
Phone Answering Services
BPO
Customer Support
HR Outsourcing
Show more
Location
Paramaribo, Suriname
Number of Employees
100 - 249
Average Hourly Rate
$12/hr
Minimal Budget
Under $1,000
Logical Moderator Solutions Services
Call Centers
Phone Answering Services
BPO
Customer Support
HR Outsourcing
Public Relations
Business Consulting
Managed Services
Big Data Analytics
Digital 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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