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.
Organic rankings are determined by five factors: top services, reviews, portfolio, awards/press, and team expertise. Sponsored listings pay for a placement that appears above organic positions. Sponsorship does not affect star ratings or review content - read more on our methodology page.
Global Support Redefined!
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...
Top Services:
- Call Centers
- Phone Answering Services
- IT Services
- BPO
- Customer Support
- Show more
- Location
- Sugar Land, Texas
- Number of Employees
- 100 - 249
- Average Hourly Rate
- $10/hr
- Minimal Budget
- $1,000 - $10,000
- Portfolios Count
- 2 Projects Listed
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsIdeasUnlimited Services
Data sourced from the agency's DesignRush profileBabeBox PatPat Sapphire Messenio Stevens Realty Justin TV (now known as Twitch TV)
IdeasUnlimited Reviews & Testimonials
BPO Review from Kimberly Weber
We brought on IdeasUnlimited to help with our back office work so our nurses and staff could stay focused on clients. They handle scheduling, reports, emails, and client inquiries, and they picked up new tasks fast with very little training. The time we save is huge, and it makes our daily operations smoother. What I like most is they really try to fit into how we work, so it feels like they are part of our own team. The onboarding took a little time, but once we got set, everything has been running well.

BPO Review from Miriam Woodward
IdeasUnlimited has been a dependable partner for us at De Dios Consulting. They handle our scheduling, emails, research, and reports, which freed up time for us to focus on clients. What I value most is how quickly they adapt and how much they feel like part of our team. The only challenge was getting them up to speed on a few tools, but once they learned, everything has been smooth.

Medical Review from Jeffrey Bill
Working with IdeasUnlimited has been a real help for us at Sunrise Treatment Center. We brought them in to handle our medical billing so our staff could focus more on patients. They learned our system fast and cut down on errors which meant we got paid quicker and had better cash flow. Communication has always been easy and they adjust when we need something changed. What stood out most is how detailed and reliable they are. Nothing is ever perfect but they came pretty close.
Reviews verified by DesignRush and sourced from the agency's profile View All ReviewsDo More Than Business Development and Beyond
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...
Top Services:
- BPO
- Email Marketing
- Call Centers
- Digital Marketing
- Content Marketing
- Show more
- Location
- Ottawa, Canada
- Number of Employees
- 50 - 99
- Average Hourly Rate
- $25/hr
- Minimal Budget
- $1,000 - $10,000
- Portfolios Count
- 14 Projects Listed
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsDMT Business Development Services
Data sourced from the agency's DesignRush profileBiovision Diagnostics Kandji Productive VOLA YouTeam CDS Global Cloud Derm For Primary Care Hubilo Concordia University Yodeck
DMT Business Development Reviews & Testimonials

Lead Generation Review from Yana Okushko
Partnering with DMT Business Development turned out to be a real game-changer for us. Their team didnt just deliver leads they brought in the right conversations that actually converted. Within a short time, they secured 25 qualified meetings that had a direct impact on our pipeline and revenue. What stood out most was their professionalism - clear communication, full ownership of the process, and the feeling that they were part of our internal team rather than an external vendor. Their proactive mindset and attention to detail made every stage of the collaboration smooth and effective.

Email Marketing Review from David Morneau
We've found tremendous success in our projects with DMT Business Development, particularly in the area of Email Marketing. Their team consistently overdelivered not only in the quality of email content but also in driving measurable engagement and conversions through expertly crafted campaigns. What truly sets DMT Business Development apart is their exceptional combination of expert content creation, data driven strategy, and a deep understanding of audience behavior. Their email marketing solutions are strategically designed, results driven, and consistently outperform the competition. The team's expertise and dedication are evident in every campaign. They bring a high level of professionalism, creativity, and responsiveness, ensuring each email resonates with the target audience while meeting our marketing goals. We greatly value our partnership with DMT Business Development and look forward to achieving even greater success together. Highly recommended for businesses seeking impactful and focused email marketing solutions.

Social Media Marketing Review from Vaysh Kewada
Thanks to the dedicated efforts of DMT Business Development, our brand has experienced a noticeable increase in online visibility, consistent social media activity, and significantly improved engagement across platforms. Their strategic approach, community building tactics, and thorough performance analysis have all contributed to measurable success. What truly sets DMT apart is their ability to stay ahead of the ever changing landscape of Social Media Marketing. Their team demonstrates a deep understanding of evolving trends, algorithm updates, and best practices ensuring that our online presence remains optimized for both visibility and conversion. Beyond campaign execution, their expertise in keyword research and analysis has also brought substantial improvements to our websites search engine rankings, bridging the gap between social media activity and SEO performance. Equally impressive is DMTs commitment to transparency, proactive communication, and customer service. They consistently deliver outstanding results while remaining highly responsive to our goals and feedback. Their professionalism and alignment with our brand voice and identity are particularly noteworthy. DMT Business Development's passion for achieving remarkable outcomes and their dedication to staying at the forefront of the industry makes them an invaluable partner in Social Media Marketing. We are truly impressed by their impact and look forward to continued collaboration.
Reviews verified by DesignRush and sourced from the agency's profile View All ReviewsAnswering 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...
Top Services:
- Phone Answering Services
- Call Centers
- Customer Support
- BPO
- Show more
- Location
- Margate, Florida
- Number of Employees
- Under 49
- Portfolios Count
- 3 Projects Listed
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsAnswering Service Care, LLC. Services
Data sourced from the agency's DesignRush profileFlowers & Foley UOAA HG Consulting
Answering Service Care, LLC. Reviews & Testimonials

Phone Answering Services Review from Vai Lealiiee
I had an issue with the protocol for our message retrieval. Spoke with Maria, the account manager in Client Relations, and she handled my concerns in a professional manner, extremely courteous, empathetic, and very kind. She fixed our account and I am so happy to be able to work with the Answering Service Care company again! I used to be an agent with them 10 years ago and still use skills taught from this company in my every day life. They are the best answering service company nationwide! I highly recommend to anyone who needs this service for their businesses. You will not be disappointed!

Phone Answering Services Review from Lee Ann Morris
It is nice to be able to leave the office everyday at 5pm and not have to worry about your customer's being taken care of. The Answering Service staff are professional and they truly are the best ones we have ever had!
James Sims's Review Sourced from Google
I have had the worst experience with Answering Service Care. They had problems signing me up with google voice never completing the onboarding but still charging monthly. I called several times to resolve issue and they keep sending bills. I do not like to leave negative reviews but need to warn others about this business. They are not professional. Go anywhere else.
Reviews verified by DesignRush and sourced from the agency's profile View All ReviewsYour business now has global specialists!
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...
Top Services:
- Digital Services
- Web Design
- Web Development
- Social Media Marketing
- Event Marketing
- Show more
- Location
- Springfield, Illinois
- Number of Employees
- 50 - 99
- Average Hourly Rate
- $29/hr
- Minimal Budget
- $1,000 - $10,000
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsTazriel Services
Data sourced from the agency's DesignRush profileSelam & GO AddisSky Selam & Orbit
Human-Focused.
Offering Contact & Call Center Services. Experience is everything. At NexRep, we know that creating exceptional experiences for our Marketplace Contractors inspires them to create exceptional customer experiences...
Top Services:
- Call Centers
- Phone Answering Services
- BPO
- Location
- Portland, Maine
- Number of Employees
- 250 - 499
- Minimal Budget
- Under $1,000
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsNexRep Services
Data sourced from the agency's DesignRush profileSprint Marmot Glossier.
Smarter Tech Real People Better Outcomes
ATM Group is a customer operations and revenue outsourcing company. We deliver contact centre outsourcing, revenue generation programmes, multilingual support and AI-enabled optimisation in the UK, Europe and South Africa...
Top Services:
- BPO
- Call Centers
- Phone Answering Services
- HR Outsourcing
- Customer Support
- Show more
- Location
- Leicester, United Kingdom
- Number of Employees
- 1000 & Up
- Average Hourly Rate
- $20/hr
- Minimal Budget
- $10,000 - $25,000
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsATM Group Services
Data sourced from the agency's DesignRush profileBoots Opticians Vodafone Ziggo Old Mutual
ATM Group Reviews & Testimonials
Lale K's Review Sourced from Google
I worked here for 3 months and my experience was (contrary to the reviews below) very nice, easy going. The management accommodated my personal circumstances and provided ease into adapting to the role, support was always available as well as humour and banter from colleagues. Perfect transition job from hospitality to office roles. Bonus points for progressing employees internally to higher roles accordingly.
An Ash's Review Sourced from Google
How did managers help with a transfer of service for a customer who left review.Because at managements rule is to never disclose that they are calling from at management,they are only to represent and use their clients name. What’s even funnier is this customer was considered special from the rest. They were not only informed it was at management dealing with their service but they even knew the real names of the managers.Another common practice is staff and managers mostly use a dummy name not their real. But in this case even that info was provided to the customer. Must be a special customer that the normal practices were broken for them and they from millions of customers even took the time to write a review lol . Everyone laugh with me.
Tim Lee's Review Sourced from Google
Both Adnan & Connor at AT Management were superb in their dealings with me over the transfer of a service when I was moving house. Nothing was too much trouble & their knowledge was very good. I’d have no hesitation in recommending these two individuals or AT Management
Reviews verified by DesignRush and sourced from the agency's profile View All ReviewsYes We Care
NEWTEL is a premier BPO provider delivering exceptional omnichannel call center, live chat, and social media support. We combine elite customer service with advanced content moderation to secure and scale your digital brand 24/7...
Top Services:
- BPO
- Call Centers
- Software Testing
- Customer Support
- HR Outsourcing
- Show more
- Location
- Amman, Jordan
- Number of Employees
- 500 - 999
- Average Hourly Rate
- $20/hr
- Minimal Budget
- $50,000 & Up
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsNEWTELCMC Services
Data sourced from the agency's DesignRush profileEjarjar ICON7 IBN SINA HIMMA & QAMIA VUEDALE SRAYA AQBA WATER PARK
Leading Virtual Assistant Services Provider
Express Virtual Assistant (EVA) is a globally managed virtual workforce solutions provider that helps businesses streamline operations through structured, performance-driven support systems. Founded in 2004 as a subsidiary of Flatworld Solutions, EVA goes beyond traditional outsourcing by offering a...
Top Services:
- BPO
- Location
- Princeton, New Jersey
- Number of Employees
- 1000 & Up
- Average Hourly Rate
- $8/hr
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsExpress Virtual Assistant Services
Data sourced from the agency's DesignRush profileeCommerce Industry Real Estate Industry Software & IT Services Industry
Your Partner in Operational Excellence
CogentHub is a leading BPO firm dedicated to helping businesses overcome challenges through exceptional management consulting services. The firm leverages advanced technology and well-planned operations to enhance customer experiences and drive growth. With a passionate team of professionals, CogentHub...
Top Services:
- BPO
- Call Centers
- Phone Answering Services
- Customer Support
- HR Outsourcing
- Show more
- Location
- Kolkata, India
- Number of Employees
- 500 - 999
- Average Hourly Rate
- $10/hr
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsCogentHub Services
Data sourced from the agency's DesignRush profileRetail Industry Travel Industry Ecommerce Industry
CogentHub Reviews & Testimonials
Ankita Banerjee's Review Sourced from Google
I have worked in the company for four months. The environment was always positive. Salary credited on time. Trainer (Sushant Singh) ,Tls (Rudra Sen, Rana Chakraborty), Quality( Somendra Nath Ash ), even the manager, everybody were helpful all the time. Only glitch I felt,the processes they work with changes so frequently that at times, I found it challenging to stay engaged passionately with the work flow.
Nazre Alam's Review Sourced from Google
I worked in this company about a month. The trainer (Sushaant Bhai), the team leaders (Rudra Da and Rana Da), the quality analyst (Sam Da), the manager (Joseph sir) , and the HR teams were all very supportive, and the salary process was smooth.The only issue was that the job role was not explained clearly — I was told it was a chat process, but it turned out to be a soundbox process, which I didn’t enjoy and I left the company after a month.Overall, a positive work culture with a helpful team.I believe that cIear communication about roles would make it even better.
Supriyo Mukherjee's Review Sourced from Google
Last 1 1/2 year never received salary on 2nd, it was every day on 1 st, regarding management and managers they are ausome and they really teaches you the job.
Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
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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.









