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
2 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.
AcquireOne helps international B2B companies successfully enter and grow in the German speaking market through strategic sales outsourcing. We combine market entry strategy, outbound prospecting, cold calling, email outreach and LinkedIn campaigns to generate qualified sales opportunities without the need to...
Top Services:
Call Centers
Email Marketing
Direct Marketing
Location
Berlin, Germany
Number of Employees
Under 49
Average Hourly Rate
$75/hr
Minimal Budget
$10,000 - $25,000
Portfolios Count
1 Project Listed
AcquireOne Services
Call Centers
Email Marketing
Direct Marketing
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Jotform
Synaos
Everspring
ComControl
Payt
ANG
Tribe
Data sourced from the agency's DesignRush profile
AcquireOne Reviews & Testimonials
Katharina Müller
Business Development Manager at comcontrol
5.0★
Appointment Setting Review from Katharina Müller
With AcquireOne, we've finally built a functioning system for our lead generation. Appointments are reliably scheduled and kept with a current show rate of 98%. I can recommend the company for B2B appointment setting.
Reviews verified by DesignRush and sourced from the agency's profile
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Direct Objective Consulting specializes in B2B marketing for small and medium-sized enterprises. With a focus on lead generation and commercialization, the agency serves technology, manufacturing, and service providers. Its mission is to maximize clients' marketing ROI through customized strategies that drive...
Top Services:
Digital Marketing
Digital Strategy
Public Relations
Reputation Management
Video Production
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Location
Montreal, Canada
Number of Employees
Under 49
Direct Objective Consulting Services
Digital Marketing
Digital Strategy
Public Relations
Reputation Management
Video Production
Big Data Analytics
AEO
Content Marketing
Advertising
Call Centers
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
TIBCO
intellera
CanadaVisa
Hardent
explorance
Data sourced from the agency's DesignRush profile
Direct Objective Consulting Reviews & Testimonials
Orly Argaman
Review from Google
5.0★
Orly Argaman's Review Sourced from Google
We have worked with Gil for our product strategy, web site creation, market research and some other marketing/strategy aspects. It was an absolute pleasure: Gil is very knowledgeable and creative, communications are clear & concise, delivery always on time and quality of the work was outstanding. I won't hesitate using Gil's services in the future.
Angie Velarde
Review from Google
5.0★
Angie Velarde's Review Sourced from Google
Direct Objective offers experienced marketing and strategic consultants. Gil along with his team can take a brief and immerse themselves in the business and be a real part of it. His team can turn a concept into reality and come up with practical strategies and concepts to take to market. Gil is also a great business partner and can be trusted to bounce off ideas in a respected and considered way. I recommend Direct Objective Consulting to anyone needing an experienced strategic marketing and business partner to enthusiastically drive growth and get results.
Reviews verified by DesignRush and sourced from the agency's profile
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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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