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
254 Companies-Rankings updated: September 06, 2026
DesignRush evaluates all telemarketing firms based on their expertise, success stories, and verified client reviews. Some listings may be paid.
BPO Company India | Call Center Outsourcing | Ascent BPO
BPO Company India | Call Center Outsourcing | Ascent BPO
Ascent BPO Services focuses on delivering quality call center outsourcing and customer care services. Our dedication to client satisfaction ensures high‑quality results in data entry, conversion, and support...
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...
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...
At Apt Tech Studio, we believe that technology should work for you, not the other way around. Founded with the mission to simplify complex challenges, we offer a comprehensive range of software solutions designed to optimize business operations, drive innovation and create sustainable growth. We're on a...
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...
Trained specialists for delivering positive customer experience allowing you to remain on top of your customers' minds. Outsourced customer support, technical reporting, and back office virtual assistants trained solely to provide upper edge to your overall business...
Offshore Management & Assistance from Filipino Online Professionals at its Best
Offshore Management & Assistance from Filipino Online Professionals at its Best
WEdothetalk is a dedicated call center company, seeking to deliver exceptional outsourcing solutions, including telemarketing and virtual office assistance. Specialized knowledge positions us as industry leaders in remote support, making us a good choice for businesses of all sizes...
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...
A Leading Outsourcing Center in Europe with the Healthy Ambition to Remain at the Top! Our business is on par with the standards established by the industry thanks to the exceptional quality and industry understanding that we provide. You may be certain that we will provide you the highest possible level of...
At HomeX, we are a results-driven virtual assistant agency helping businesses across the U.S. and beyond scale faster and operate smarter. Based in Prishtina, Kosovo, we specialize in cold calling, lead generation, and customer support all delivered by trained, English-speaking virtual teams...
SalesHive is a B2B Lead Generation Agency that uses cold calling, email, and linkedIn to book meetings with qualified buyers by using our proprietary sales outreach platform and CRM...
In Remote Team Solutions, we believe in people and contributing to their lives. That's why we build a great place to work where we make sure all the talented staff is motivated, happy, doing a great job, and well remunerated. It's fantastic to see people's lives being changed at the same time that we are...
Ant Marketing is one of the UK's leading telemarketing companies, with over 27 years' experience of delivering effective inbound, outbound and multichannel marketing strategies as well as market research services to the very highest standards...
The Lead Generation Company is a multi-award-winning outbound B2B agency. We help companies generate new business through effective lead generation support...
Prospect Solutions is a Vancouver based integrated marketing consulting and professional telemarketing representation company . We develop customized marketing and sales programs to effectively approach, influence, advance, sell and get referrals for our clients since 2003. Our diverse menus of marketing and...
Green Leads provides our clients with the highest level subscription based Pipeline Generation services and enable our clients to achieve top line revenue growth and position them as their category leader...
Spanning the full range of litigation, contract lifecycle management and business enablement solutions, Integreon empowers law firms, corporations, professional services organizations and financial services institutions to deliver predictable outcomes allowing our clients to focus on what they do best...
HIghPower call center is world renown near shore call center located in the heart of Tijuana minutes from the U.S border. Our team is bilingual, professional, and driven by performance goals. Our Call Center is second to none complete with a corporate structure and professional work environment...
Our team knows the importance of staying on top of the latest developments and rapid change. Our flair for design and innovation allows us to stay ahead of the game...
International Call Center, IT, Lead Generation, Sales, Claims Entry, Data Processing, Property Preservation Work Order Processing, Order taking / Invoicing, BPO...
Pinpoint Technologies, Inc. is a U.S.-based data & list solutions provider that specializes in supplying highly targeted business contact lists. The company serves clients in industrial, engineering & scientific research sectors, offering services such as email/direct mail/telemarketing lists, list...
Attel is the Contact Center specialized in Comprehensive Customer Management that will help you connect, understand and communicate with each one of them...
We aim to be Asia's largest consumer and business data asset owner and to provide high-impact digital marketing services, serving clients that demand high return-on-investment marketing results.Powered by data, we help businesses implement a successful digital marketing campaign through email marketing, SMS...
Infomedia offers businesses and government agencies with contact center and/or customer relationship management services of the highest caliber. We treat each client's demands as if they were our own, seeking to give genuine value and beyond expectations. We aim for the greatest outcomes by collaborating...
Providing industry-leading call center services for over 33 years.
Providing industry-leading call center services for over 33 years.
CTC TeleServices is a highly experienced staff with cutting-edge technologies. We take a straightforward approach to every customer engagement and deliver industry-leading outcomes! Our clients credit CTC's timeliness, innovation, and strict attention to quality for the success of their initiatives. TC offers...
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...
Titanium Telemarketing takes pride in delivering exceptional and high-level sales skills through various freelancing platforms, ensuring a personalized and authentic approach without the use of robotic staff or insincere scripts. Our commitment is to provide genuine and effective telemarketing services...
Hamedia is comprised of highly trained individuals who are experts in their respective fields. We take great pride in our ability to provide our clients with the best talent available. Whether you need sales professionals, marketing experts, or customer service representatives, we have team members who can...
every call is a connection and every interaction is an opportunity.
every call is a connection and every interaction is an opportunity.
Founded in 2019, our call center has swiftly risen to prominence delivering expectational customer service solutions. Celebrating five years of consistent growth, we've reached the pinnacle of our industry. Join us in our journey to success where we prioritize your CSaT and unprecedent performance...
The Pressplay Group has been working in call centre and fulfilment for over 20 years with a team that combines years of industry experience and expertise, enabling the delivery of a one-stop solution that allows clients to focus on what they do best. From the most basic of briefs, we can make it happen...
Tazriel is a global outsourcing partner providing affordable remote service expertise for Software Development, Microsoft Power Platform automation, Mendix app Builds, Cvent event technology support, IT Administration and AI Training. With 24/7 support and cost savings of upto 70%, we help businesses...
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...
Offering Call Center Services. Celebrating our 25th year, TeleReach Corporate specializes in helping B2B companies dramatically improve the performance of their sales teams by utilizing a combination of productivity based tools and processes, and state-of-the-art technology...
24/7 Live Answering, Virtual Receptionist & Call Center Solutions
24/7 Live Answering, Virtual Receptionist & Call Center Solutions
AnswerFirst helps businesses stay connected with real, helpful people answering every call day or night. No bots. No scripts. Just trained Customer Service Professionals who know how to support your customers when it matters most...
Zaphyre is an Execution Service Partner helping B2B companies scale through content marketing, outbound sales, lead generation, and virtual staffing. We embed execution teams that turn strategy into measurable growth...
We offer cold calling services in industrial markets (preferably Europe).We are professional sales engineers with experience in different tech fields.Our main markets are metal and woodworking, plastic processing, oil and gas, FMCG production, and agro-.You get a simple or promoted database with...
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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