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.
Connecting Brands
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...
Top Services:
- SEO
- Digital Marketing
- WordPress Website Design
- Digital Services
- Social Media Marketing
- Show more
- Location
- Pune, India
- Number of Employees
- Under 49
- Average Hourly Rate
- $15/hr
- Minimal Budget
- Under $1,000
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsEspial Solutions Services
Data sourced from the agency's DesignRush profileTelerainMD Boomerang Transportation Bow and Baan Technology Services Pvt. Ltd.
Espial Solutions Reviews & Testimonials

PPC Review from Ahmed Iqbal Khan
Espial worked for us to deliver quality leads through PPC campaigns. Our challenge was that we hardly had 1% conversion from all the clicks that we were getting through Google Adwords. Within a month our lead to conversion increased from 1% to 5%, that was a remarkable achievement. They know which design and content works best. The level of communication and responsiveness that we receive from them makes them incredibly easy to work with.

SEO Review from Saurabh Agarwal
We are very satisfied with the services received so far in these 7 months. Because of Espial Solution's efforts, the site's traffic boosted and most keywords used got high-rankings on Google search. As a result, the client receives more organic conversions and customer satisfaction. The team is very professional and punctual.

Digital Marketing Review from Rajeev Mehta
Working with them is quite fluid, they are available 24 hours of the day. Thanks to the work of Espial Solutions, website traffic increased and sales grew by almost 50%. The workflow is fluid, as the team is available all day. The client is impressed with the analytical way that Espial Solutions did their work, studying the business model first before starting.
Reviews verified by DesignRush and sourced from the agency's profile View All ReviewsYour Story. Our Publishing Expertise.
House of Publisher provides expert article writing services with original, SEO-friendly, and well-researched content for every industry...
Top Services:
- Digital Services
- Branding
- Graphic Design
- Audio Production
- SEO
- Show more
- Location
- Hoboken, New Jersey
- Number of Employees
- 250 - 499
- Average Hourly Rate
- $100/hr
- Minimal Budget
- $50,000 & Up
- Portfolios Count
- 1 Project Listed
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsHouse Of Publisher Services
Data sourced from the agency's DesignRush profileRaelonda Brian Timothy
House Of Publisher Reviews & Testimonials
perry doc's Review Sourced from Google
THe worst publishing place in the world. took my money and fled they are theives. Do not give them money
Rebecca Jenkins's Review Sourced from Google
I availed ghostwriting services from House of Publisher, and they also provided me with a complimentary book cover. This really built my trust in them. They handled my project with completed all the work within the given timeframe. Everything delivered perfectly on time. I highly appreciate House of Publisher for their excellent work.
Mike Hedson's Review Sourced from Google
House of Publisher did everything for my book they handled the writing, editing, proofreading, formatting and even publishing it on all platforms, including Amazon. When they first told me they would take care of everything I honestly could not believe it. But now I truly do because they worked with such dedication and honestly. I'm so happy that my first book is finally complete and published. That's why I want to say a few words of appreciation for them.
Reviews verified by DesignRush and sourced from the agency's profile View All ReviewsStreamline Your Human Resources Services Today
Ouvriex LLC was established in 2021 as part of the FORM Production Group, which originated in 2005. The company operates as a comprehensive business solutions provider, offering services that include human resources solutions, legal consultations, taxation advisory, facility management, and workspace rentals...
Top Services:
- HR Outsourcing
- Customer Support
- Business Consulting
- Staff Augmentation
- DevOps Consulting
- Show more
- Location
- Cairo, Egypt
- Number of Employees
- Under 49
- Average Hourly Rate
- $70/hr
- Minimal Budget
- Under $1,000
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsOuvriex Services
Data sourced from the agency's DesignRush profileExpertise France AFD Deloitte Ital CONNECT Professional Services DoPay Hassan Allam
The BPO With A Heart
Founded in 2002, Antasis is a trusted Singapore-based provider of outsourced business solutions. We deliver world-class customer service, IT support, and back-office operations through a flexible, innovative workforce. Certified in ISO 27001, ISO 9001, Bizsafe Level 3, COPC, and Six Sigma, we ensure quality...
Top Services:
- BPO
- Call Centers
- Location
- Singapore, Singapore
- Number of Employees
- 250 - 499
- Average Hourly Rate
- $15/hr
- Minimal Budget
- $1,000 - $10,000
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsAntasis Pte Ltd Services
Data sourced from the agency's DesignRush profileGetgo Canadian Pizza Healthy School Supply
Antasis Pte Ltd Reviews & Testimonials
nontombi mooi's Review Sourced from Google
wanted to confirm I received and email and i went through the interview process with someone who claims to be working and recruiting for your company. I want to confirm if it is legit they are recruiting from South Africa to work and be based in Cambodia.
Daryl Deanna's Review Sourced from Google
Receive a text from someone claiming from this company other branch, in Bukit Indah, JB. Can you guys clarified this?
Andrew Chng's Review Sourced from Google
I just wanted to let you know that it's been great working with Antasis. Thank you so much for meeting our needs and a partner that is easy to work with.
Reviews verified by DesignRush and sourced from the agency's profile View All ReviewsConversation Intelligence for Modern Enterprises
Make every call a useful conversation with Oli AI, an enterprise AI voice agent for inbound and outbound calls. From welcoming callers and booking appointments to qualifying leads and managing customer follow-ups, Oli AI adapts to your workflows across 22+ global languages. It connects with your business...
Top Services:
- Call Centers
- BPO
- Phone Answering Services
- Customer Support
- Show more
- Location
- Chennai, India
- Number of Employees
- Under 49
- Average Hourly Rate
- $1/hr
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsOli AI Services
Data sourced from the agency's DesignRush profileBeesBuzz Media G Square Orange Finance
Top Digital Marketing & Web development Agency
Madalytech: Empowering Businesses through Strategic Innovation...
Top Services:
- Digital Marketing
- Graphic Design
- Digital Strategy
- Web Development
- Social Media Marketing
- Show more
- Location
- Karachi, Pakistan
- Number of Employees
- Under 49
- Average Hourly Rate
- $200/hr
- Minimal Budget
- $1,000 - $10,000
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsMadalytech Services
Data sourced from the agency's DesignRush profileAGP Pharma Amarant Pharma ACM Gold Pakistan Solar Alam Builders Iqra University Bar B Que Tonight Subway Hardees Mozzart
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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.






