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
6 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.
Reexia is a UK-based B2B lead generation and telemarketing agency helping companies connect with decision-makers and generate qualified business opportunities. Through targeted outreach, data-driven campaigns, and a combination of telemarketing and email marketing, Reexia supports organisations look...
Top Services:
Call Centers
Email Marketing
Direct Marketing
SEO
BPO
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Location
Birmingham, United Kingdom
Number of Employees
Under 49
Average Hourly Rate
$30/hr
Minimal Budget
$1,000 - $10,000
Portfolios Count
2 Projects Listed
Reexia Limited Services
Call Centers
Email Marketing
Direct Marketing
SEO
BPO
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Aerospace
IT
Telecomunication
Retail
Manufacturing
Data sourced from the agency's DesignRush profile
Reexia Limited Reviews & Testimonials
James Nolan Business Development Manager at Jeddio Tech
5.0★
Lead Generation Review from James Nolan
We worked with Reexia to support our outbound business development and lead generation efforts. The team helped us structure a targeted outreach campaign and build a relevant prospect database for our market.Communication throughout the project was clear and organised. We had bi-weekly calls to review activity and results, and Kevin was very hands-on in guiding the campaign and suggesting adjustments where needed.Results took some time to appear, but this was explained clearly at the start of the campaign and expectations were set appropriately. Once the campaign gained momentum, we began having conversations with companies that matched our target profile.Overall, it was a positive experience and we appreciated their structured approach to outbound prospecting.
Giles Strong Review from Google
5.0★
Giles Strong's Review Sourced from Google
Reexia has been a game-changer for our business. Their expert guidance in implementing CRM tools streamlined our entire sales process, making it more efficient and effective. On top of that, their SEO advice helped boost our online visibility significantly. Professional, insightful, and a pleasure to work with—highly recommended
Vanessa Mattia Review from Google
5.0★
Vanessa Mattia's Review Sourced from Google
We've been working with Reexia for our sales outreach and lead generation, and they’ve been absolutely outstanding. Their service is incredibly personal and responsive — it genuinely feels like they’re part of our team. They’ve taken the time to understand our business and target audience, and the results speak for themselves. We’re seeing consistent, high-quality leads and a real uplift in engagement. If you’re looking for a hands-on, strategic partner to drive your sales pipeline, we can’t recommend them enough.
Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
DGC BPO Service is a premier US-based outsourcing company offering expert customer service, call center solutions, virtual assistance, and lead generation. We help businesses optimize operations, improve customer experiences, and drive growth with tailored, efficient solutions...
Top Services:
BPO
Call Centers
Customer Support
Phone Answering Services
Digital Marketing
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Location
New York City, New York
Number of Employees
Under 49
Average Hourly Rate
$25/hr
Minimal Budget
$1,000 - $10,000
Portfolios Count
1 Project Listed
DGC BPO Service Services
BPO
Call Centers
Customer Support
Phone Answering Services
Digital Marketing
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
LTS Global Digital Services, based in Vietnam, specializes in providing comprehensive digital BPO services. Our expertise encompasses data processing, RPA solutions, and a range of other business process outsourcing services designed to enhance operational efficiency and drive growth for our clients...
Top Services:
IT Services
BPO
Call Centers
Customer Support
AI Development
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Location
Hanoi, Vietnam
Number of Employees
100 - 249
Average Hourly Rate
$25/hr
Minimal Budget
$1,000 - $10,000
Portfolios Count
2 Projects Listed
LTS Global Digital Services Services
IT Services
BPO
Call Centers
Customer Support
AI Development
ERP Consulting
Managed Services
IT Compliance Solution
Software Development
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
We specialize in managed and dedicated team staffing for small and large outsourced projects. Combined with a highly trained and educated staff, our company exists to make a deliverable outsourced product managed with Western-style business practices, and delivered with exceeded expectations. Our products are...
Top Services:
Digital Services
Digital Strategy
Digital Marketing
eCommerce
Email Marketing
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Location
Dhaka, Bangladesh
Number of Employees
Under 49
Minimal Budget
$1,000 - $10,000
Virtual Fellows Services
Digital Services
Digital Strategy
Digital Marketing
eCommerce
Email Marketing
BPO
Call Centers
Customer Support
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
belong
ProLeadsNYC
NEF
Data sourced from the agency's DesignRush profile
Virtual Fellows Reviews & Testimonials
Phoenix Offline Review from Google
1.0★
Phoenix Offline's Review Sourced from Google
This is not an organization. They have stolen my money. I don't want anyone like me to be cheated by them. I request no one to take any service from them.
Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
We are company specializing in outbound sales, aiming to help you increase your number of clients or customers. Our business models goal is to schedule meetings with potential clienst for you...
Top Services:
Email Marketing
Direct Marketing
Business Consulting
Market Research
Call Centers
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Location
Belgrade, Serbia
Number of Employees
Under 49
Average Hourly Rate
$20/hr
Minimal Budget
$1,000 - $10,000
Triballi Services
Email Marketing
Direct Marketing
Business Consulting
Market Research
Call Centers
Phone Answering Services
Customer Support
CRO
Event Marketing
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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