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
187 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.
IdeasUnlimited offers 24/7/365 inbound and outbound call center services, covering customer support, technical support, sales, and multilingual operations. Founded in 2010, the agency delivers offshore and remote support for global businesses across eCommerce, healthcare, real estate, and finance...
Your Partner in AI-Enabled Development, Marketing, eCommerce, Data Management, BI and Ops.
Your Partner in AI-Enabled Development, Marketing, eCommerce, Data Management, BI and Ops.
Tech2Globe provides inbound and outbound call center services as part of its BPO-KPO division, covering customer support, telemarketing, lead generation, virtual assistance, and call center monitoring. With 14+ years of operation and 12,000+ completed projects, it holds a 4.9 rating on DesignRush...
DMT Business Development runs cold calling, appointment setting, and multichannel lead generation campaigns for B2B companies across 30 countries. The Ottawa-based agency has delivered 2M+ leads and 10,000+ appointments over 7 years, with clients averaging a 2-5% prospect-to-appointment conversion rate...
America's best phone answering service taking care of your callers
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...
SDR Teams, Lead Generation & Call Center Services for B2B Companies
SDR Teams, Lead Generation & Call Center Services for B2B Companies
Munzai Solutions provides B2B call center services covering cold calling, inbound call management, and customer support, with each engagement staffed by dedicated SDRs working 40 hours per week. The call center company's packages include a US-based dialer, project manager, and weekly reporting...
Protel BPO, nothing matters more than how your customers view your brand how they interact with it
Protel BPO, nothing matters more than how your customers view your brand how they interact with it
Protel BPO provides inbound voice, outbound voice, live chat, and back-office outsourcing from two call center locations in Belize, operating in US Central and Mountain time zones with native English and bilingual Spanish agents. Since 2012, it has served retail, healthcare, and travel clients...
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World-Class Outsourced Teams Operating 24/7 Globally, in 60+ Languages
World-Class Outsourced Teams Operating 24/7 Globally, in 60+ Languages
Hugo deploys dedicated inbound and outbound call center teams across 60+ languages, with 24/7 coverage and 99.9% uptime. Its university-educated agents deliver 88% first call resolution. The call center provider is ISO 27001, HIPAA, and SOC 2 certified...
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...
Martal Group runs outsourced B2B cold calling, appointment setting, lead generation, and SDR programs for companies across SaaS, fintech, cybersecurity, healthcare, and manufacturing, powered by 200+ onshore sales executives and proprietary AI outreach...
Agile, High Performance Voice Contact Services since 1990
Agile, High Performance Voice Contact Services since 1990
The Telemarketing Company has worked with telemarketing, telesales, lead generation, appointment setting, inbound call handling, and telephone market research since 1990. Operating 220+ seats with multilingual native-language speakers, it holds ISO 27001, ISO 9001, FCA, PCI Level 4, and MRS accreditations...
AnswerConnect offers 24/7 live call answering, inbound call center solutions, live chat, and appointment scheduling for businesses across legal, healthcare, real estate, IT, and franchise sectors. Voted Best Answering Service for 2026, the call center company answers 99% of calls within four rings...
Clients save up to 70% on staffing costs by building dedicated offshore customer service teams through Cloudstaff, which recruits from the Philippines, Colombia, and India and delivers most teams within 15-25 days. The agency holds ISO 27001, ISO 9001, PCI-DSS, HIPAA, and GDPR certifications...
Appointment Setter Online delivers outsourced appointment setting and lead generation through dedicated SDRs assigned by client fit, covering outbound prospecting, inbound qualification, telemarketing, and customer support. To date, the call center provider reports 75,000+ verified sales bookings...
Trusted by 370+ enterprise brands, OnBrand24 provides inbound and outbound call center services, technical support, help desk, multilingual support, live chat, back-office BPO, lead generation, and appointment setting. The agency boasts a 92% average CSAT score and was named a 2025 Fastest Growing BPO by...
Founded in 2004 and headquartered in Encino, California, Callbox Inc. is a global leader in outsourced B2B lead generation, appointment setting, and event marketing. With over 20 years of experience and a multilingual team servicing APAC, LATAM, and EMEA, the agency supports medium-sized businesses to...
Ambs Call Center is a family-owned call center provider operating continuously since 1932, that provides 24/7 live phone answering, virtual receptionist, medical answering, AI receptionist, employee call-off hotline, and appointment scheduling from US-based centers in Jackson, Michigan and Tampa, Florida...
Blue Valley Marketing runs inbound and outbound call center operations covering lead generation, B2B telemarketing, customer service, omnichannel support, market research, customer win-back, live chat, and order processing. It operates with bilingual support from offices in Kansas and California...
The Call Company is a Danish call center and telemarketing agency, offering telesales, customer service, fundraising, and appointment setting across phone, chat, SMS, and email. In 2025 it handled 505,000+ conversations with a 94% inbound answer rate and an average queue time of 20 seconds...
In 2011, Carlo Silva was working for a privately held company in the United States as an e-Commerce Marketing Director and also had an e-Commerce business. He built a small team to support the tasks he was outsourcing, the team did so well that he had an idea to start a company that would offer outsourcing...
Extraordinary Customer Experience Begins with People First.
Extraordinary Customer Experience Begins with People First.
Ansafone operates US-based inbound and outbound contact centers with 50 years of experience, offering customer care, client retention, sales, telemarketing, IVR, bilingual support, live chat, and BPO services. The agency serves healthcare, government, retail, energy, property management, and law clients...
Since 1993. Transform Business Digitally. IT Managed Service Provider. IT Infrastructure Builder.
Since 1993. Transform Business Digitally. IT Managed Service Provider. IT Infrastructure Builder.
Over 30 years of experience in the IT Solutions and IT Support, Win-Pro is an institutional powerhouse delivering unparalleled standards to organizations across Singapore, Johor Bahru, and Kuala Lumpur. Our Outsourced IT Managed Services Company is leading the way with IT services for business...
Tele Direct is a call center provider that handles patient scheduling, claims support, lead qualification, seminar reservations, Tier 1 tech support, appointment setting, and outbound telesales, with bilingual English and Spanish agents and dedicated account management on every account...
US-Based Outbound SDR Agency. Boutique. Multi-Channel. Real Pipeline.
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...
RAYA Customer Experience is a world-class business process outsourcing (BPO) and contact center outsourcing (CCO) service provider offering customer experience management, seat rental solutions, back-office, and digital services to global clients, including global Fortune 1000 companies in Europe, the Middle...
PATLive stands at the forefront, providing top-tier phone answering services characterized by their amiability and distinguished reputation. Our commitment is to furnish each customer with an extensive online reporting package, a local or toll-free number, and 24/7 approachable customer support...
Kontaktikeskus runs 24/7 inbound and outbound call center operations for 50+ clients across Estonia and internationally, covering customer service, telemarketing, and AI-assisted sales and support. The call center provider boasts 16+ years in the Baltic market and holds offices in six Estonian cities...
Helpware CX is a call center company that runs inbound and outbound call centers across 19+ locations in 11 countries, supporting 45+ languages. The agency posts 90% CSAT and holds 30+ industry awards including the IAOP Global Outsourcing 100 and a Gold Stevie Award. Clients average a 5-year partnership...
Contact Center Services for Telecom, BFSI, Healthcare, Utilities, Travel, High-Tech Growth
Contact Center Services for Telecom, BFSI, Healthcare, Utilities, Travel, High-Tech Growth
With over 20 years of industry experience and a client base of 190+ companies spanning multiple sectors, Fusion CX Group is a trusted provider of top-notch call center and customer care services...
With 3.6 million calls handled and 97.6% answered within three rings, Face For Business providestelephone answering, virtual receptionist, outsourced switchboard, appointment booking, and live chat services to UK businesses across legal, healthcare, construction, accountancy, and retail sectors...
3D2B is a service provider whose primary business and expertise is in providing B2B customer acquisition solutions to high-technology companies worldwide. 3D2B executes all processes for its clients, delivering people, processes, and systems in order to implement and integrate all components of the customer...
At our website design agency, we specialize in creating custom websites for businesses in the handyman, power washing, cleaning, painting, and junk removal industries. We also have experience designing e-commerce and affiliate websites, as well as travel affiliate websites and portfolios.
Whether you're...
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where innovation come live
where innovation come live
We firmly believe in serving Innovation, with spiralling advanced technologies. Hence we make sure our team is fully trained and certified with the latest advancements. Our core principles are high reliability, scalability, upgradation, Innovation, and transforming our client's vision into reality...
Established in 2009, Unity Communications is a US-based Business Process Outsourcing (BPO) company specializing in sales, technical support, customer service and administrative support services...
Phone answering solutions that businesses are proud of!
Phone answering solutions that businesses are proud of!
Nexa emerges as a trailblazing 24/7 virtual phone answering service renowned for its nationwide operations across the United States. Our forte lies in delivering unparalleled customer experiences through technology-driven call answering solutions, orchestrated by our adept virtual receptionists who possess...
Focused on wellness and health-related businesses, 3C Contact Services provides inbound call center, customer response, appointment booking, help desk, virtual receptionist, live chat, email management, and back-office BPO. The Toronto-area agency serves small and medium businesses across Canada and the US...
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All-In-One E-commerce Technology Solution Provider: Because Every Click Matters.
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...
Answering Service Care Provides Trained Customer Service Professionals.
Answering Service Care Provides Trained Customer Service Professionals.
Call center agency Answering Service Care empowers your customer operations with 24/7 live chat, expert lead intake, appointment scheduling, and HIPAA-compliant secure messaging. We ensure every customer interaction is seamless, professional, and reliable, so you never miss a lead or opportunity...
Our collaborators have grown to rely on our commitment, responsibility, and adaptability through tailor-made resolutions. Our endeavor to cultivate Brand Passion involves cultivating profound insights into processes and products, coupled with fostering strong relationships...
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...
WOW24-7 offers customer service, call center, technical support, IT help desk, and back-office services through its experience center model featuring 100% QA coverage. Operating around-the-clock, the call center company holds ISO 9001, ISO 27001, ISO 27701, GDPR, and PCI DSS certifications...
Comprehensive Outsourced Customer Support Services
Comprehensive Outsourced Customer Support Services
With a 98% client retention rate, Uassist.ME provides nearshore bilingual BPO contact center programs and virtual assistant services to US and Canadian businesses. BPO programs cover customer service, technical support, sales, healthcare, legal process, and financial services...
Virtual Assistant Indonesia provides solutions for eCommerce companies seeking reliable support on projects big or small. Our proven strategies drive excellence in every administrative and operational task we handle, delivering cost-effective call center services that scale with your business needs...
Call center firm SwiftCare Billing makes it easy to elevate healthcare operations and streamline claims, coding, and denials management for providers of all sizes. Superior solutions are born from our profound experience in medical billing and revenue cycle optimization...
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...
Our call center experts can streamline your customer interactions, ensuring your business excels in today’s global landscape. With proven results and commitment to excellence, we transform every customer care project into a productive operation...
We are an award winning Malaysian company in the areas of Customer Experience, Learning & Training, Human Resource Outsourcing ,Talent Management and Business Process Outsourcing (BPO). Providing cost effective contact centers, Business Process, IT and Managed services from Malaysia...
Call Center Sales Pro (CCSP) offers a comprehensive range of services for businesses in the United States. These services include telephone answering, healthcare call centers, outsourced call centers, business process outsourcing (BPO), nurse triage, appointment setting and call center consulting...
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...
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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