Top 100 Third Party Verification Companies

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Top 100 Third Party Verification Companies

July 2022

Looking for a top third party verification service?

This guide contains companies from all over the globe that excel in third-party verification. Their services vary from non-voice BPO/back-office services to voice services to transcription and they provide a multitude of other services your company may need. 

Jump to Most Reviewed Companies

List of the Best Third Party Verification Agencies

  • 1
    • $1,000+
    • 250 - 999 employees
    • Kyiv, Ukraine

    SupportYourApp is a customer support outsourcing company based in Kiev, Ukraine. Founded in 2010, SupportYourApp's team of more than 400 employees provides non-voice BPO/back office services and voice services. 

    Clients

    • Mastercard
    • Amazon
    • HERE Technologies
    • MacPaw

    Industries

    Notable Project

    A health monitoring platform was looking for a vendor that could deal with technical issues that were reported by their users. They chose to partner with SupportYourApp because of their experience.

    "We were very impressed with everything."

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  • 2
    • Scheduling

      4.6
    • Quality

      4.5
    • Cost

      4.3
    • NPS

      4.6
    Read Full Reviews on Clutch Visit Site
    • Undisclosed
    • 250 - 999 employees
    • Encino, CA

    Callbox is a business process outsourcing company based in Encino, Calif., with offices in Singapore, Ultimo, Australia, and the Philippines. Founded in 2004, Callbox's team of 174 provides voice services and non-voice BPO/back office services.

    Clients

    • Alima Technologies
    • Intrepid Advisors
    • LexisNexis
    • LiQWID

    Industries

    Notable Project

    Callbox was a B2B services company’s appointment setter. Their team conducted cold calls to small- and medium-sized businesses and used HubSpot to log information. 

    "They were wonderful to work with, and we communicated regularly."

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  • 3
    • Scheduling

      5.0
    • Quality

      5.0
    • Cost

      5.0
    • NPS

      5.0
    Read Full Reviews on Clutch Visit Site
    • $1,000+
    • 250 - 999 employees
    • Noida, India

    Go4Customer is a contact center outsourcing company that is based in Noida, India with other centers in Jaipur, Mumbai, Bengaluru, Chennai, Ahmedabad, and Bhopal, India, South Tiverton, UK, and Houston. Since 2004, their team of over 200 experts have been providing voice/call center services and BPO/back office services. Go4Customer works with different industries including information technology, financial services, and consumer products.

    Clients

    • MSME
    • BSNL
    • TIMEX
    • HudCo

    Industries

    Notable Project

    Go4Customer provides call center services.

    "The workflow was perfect."

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  • 4
    • $1,000+
    • 50 - 249 employees
    • Stafford, TX

    Unee Solutions is a business process outsourcing firm based in Stafford, Texas with additional assets in India and Israel. They were founded in 2007 and currently have a staff of 125 employees. Unee Solutions' solutions focus on lead generation and include both voice outsourcing and non-voice back office services.

    Clients

    • Kern
    • Krohne
    • Cimatron Group
    • Jurat

    Industries

    Notable Project

    Unee Solutions provides voice lead generation for a luxury bed and breakfast in Colorado. The client wanted to stand out from crowded search results that prioritize large brands and partnered with Unee for a more distinct lead generation strategy. Unee's voice support agents provide outbound calls and booking over the phone. The team has considerably outperformed the client's original in-house efforts.

    "I was paying a couple of people roughly $1,500 per month to do it previously and they were only spending maybe 10 hours in total a week to produce 2 to 4 leads. Now I pay roughly $2,000 for unknown hours with 15 to 20 leads. Invaluable!" — Owner, Colorado Bed and Breakfast

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  • 5
    • Undisclosed
    • 10 - 49 employees
    • Spokane, WA

    Sound Telecom is an answering services provider based in Spokane, Wash., with a team of 25. Founded in 1986, the team provides voice and transcription services for clients in a variety of industry.

    Clients

    • Boeing
    • Microsoft
    • Starbucks

    Industries

    Notable Project

    Sound Telecom provided answering services with voicemail and call forwarding features for a healthcare company. The team recorded names and numbers to ease their return call process. All of these services were delivered on time.

    “They are prompt and answer in a personal and professional manner. They offer many benefits with their service. They are affordable and trustworthy.” — Manager, Healthcare Company

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  • 6
    • $1,000+
    • 50 - 249 employees
    • Durrës, Albania

    Dalerio Consulting is a consultancy founded in 2017 in Durres, Albania with no more than 10 experts. They specialize in social media marketing, email marketing, and SEO solutions for small and mid-market agencies in the industries of advertising and business services.

    Clients

    • KlimaTek
    • Korrieri

    Industries

    Notable Project

    Dalerio Consulting provides ongoing web design and digital marketing services. They built the website in WordPress and are currently promoting it on social media.

    "Everything I have asked for so far in terms of design they’ve delivered." 

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  • 7
    • Scheduling

      4.8
    • Quality

      4.9
    • Cost

      4.6
    • NPS

      5.0
    Read Full Reviews on Clutch Visit Site
    • $50,000+
    • 250 - 999 employees
    • Salisbury, NC

    GCS Agents is a contact center firm in Salisbury, N.C., founded in 2001. The team of 300 specializes in voice services, consulting, and BPO services for its majority midmarket clients across multiple industries. 

    Industries

    Notable Project

    GCS Agents provided security consulting and analytics for an energy company's database servers. As a result, the client's security services and communication vastly improved, reducing its hours and money spent on the task.  

    "The data security and communications outside of my internal database was and is very excellent. I would love to give their name but I don't do that for security reasons." – IT Executive, Energy Company

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  • 8
    • Undisclosed
    • 10 - 49 employees
    • King of Prussia, PA

    Specialty Answering Service is a call center outsourcing firm based in King of Prussia, Penn. Founded in 1985, they have about 30 employees and work with a national network of freelance customer support specialists. Their services consist of voice customer support and non-voice business process outsourcing.

    Clients

    • Bausch+Lomb
    • Fujitec
    • Colwell Banker

    Industries

    Notable Project

    Specialty Answering Service serves as a dispatch and management center for a produce distributor. The client has an extensive range of end-clients and delivery providers that requires considerable monitoring and attention to detail. By migrating their dispatch to Specialty Answering Service, the client saved about 520 labor hours per month with comparable outcomes.

    "Their strength is professional handling of calls and increased knowledge of our business, customer service is easy to work with and courteous. Things have run smoothly so far." — Manager, Food Producer

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  • 9
    • $1,000+
    • 250 - 999 employees
    • Los Angeles, CA

    Outsource and Save, a call center company, was launched in 2019. Based in Los Angeles, California, their midsize team offers call center services, back office outsourcing, customer service outsourcing, sales outsourcing, and more.

    Industries

    Notable Project

    Outsource and Save provided recruiting and sales services for a staffing and recruiting company. They presented a service agreement that outlined logistics and assisted the client's in reopening the business.

    "I appreciated how thorough the intake call was."

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  • 10
    • Scheduling

      5.0
    • Quality

      5.0
    • Cost

      4.5
    • NPS

      5.0
    Read Full Reviews on Clutch Visit Site
    • $1,000+
    • 250 - 999 employees
    • South Jordan, UT

    AdvancedMD is a business process outsourcing firm for the healthcare industry. Based in South Jordan, Utah, they have  a branch office in Springfield, Mass. The team was founded in 1999 and includes 590 employees. AdvancedMD offers a wide variety of solutions for independent practices. Their services include non-voice BPO, voice call outsourcing, and integration of medical and enterprise software.

    Clients

    • Lineagen
    • Center for Balanced Health
    • Greenhill Family Clinic

    Industries

    Notable Project

    AdvancedMD provides full-service back office support for a medical clinic in Florida. The services rendered include management of patient records, billing customer support, and business analytics. The client has noted a marked improvement in their practice's efficiency. Advanced MD's contribution is saving hundreds of dollars a month on customer support with strong results.

    "[AdvancedMD] Organizes your life in a simpler way, creating a more comforting work atmosphere, and the best results in less time." — Customer Service Manager, Healthcare Hospitality Clinic

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  • 11
    • Undisclosed
    • 10 - 49 employees
    • Fredericksburg, VA

    Conversational is a voice services company founded in 2003. Located in Fredericksburg, Virginia, the mid-sized team of experienced professional receptionists provides the best possible support for clients in the legal and medical industries, among others.

    Industries

    Notable Project

    Conversational provides call center services for a nonprofit organization. They take messages and forward them to the client's email. The goal is to respond to all inquiries and get accurate information.

    "Their most impressive part is the reliability and promptness of services provided consistently."

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  • 12
    • Scheduling

      5.0
    • Quality

      5.0
    • Cost

      5.0
    • NPS

      5.0
    Read Full Reviews on Clutch Visit Site
    • $1,000+
    • 2 - 9 employees
    • New York, NY

    Leadroot is a New York-based lead generation company. Founded in 2017 with an additional office in the Philippines, the small team of less than 10 provides BPO services, voice services, email marketing, direct marketing, and marketing strategy for its small business and midmarket clients. 

    Clients

    • Woodpecker
    • FatCat

    Industries

    Notable Project

    A legal document automation platform hired Leadroot to refine its marketing strategy and identify its target customers for outreach efforts. They researched and identified target customers, which has resulted in high engagement and conversion rates. 

    "Thanks to Leadroot, and the super targeted leads we’ve been getting, we’re getting 50-60% email open rates and even 10% conversion rates from initial cold-outreach email or call to qualified opportunity. " – Manager, Legal Document Automation Platform

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  • 13
    • Scheduling

      4.8
    • Quality

      5.0
    • Cost

      4.5
    • NPS

      5.0
    Read Full Reviews on Clutch Visit Site
    • $1,000+
    • 1,000 - 9,999 employees
    • Long Beach, CA

    Located in Washington, District of Columbia and Pasig, Philippines, Boldr is a call center. Launched in 2016, the small team focuses on voice services and non-voice bpo/back office services.

    Notable Project

    Boldr processes new venues for an online event venue marketplace, screening submitted venues and activating them once they meet requirements. They also help the client's outbound team and execute internal jobs.

    "I really appreciate that Boldr has been able to understand our business."

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  • 14
    • Scheduling

      5.0
    • Quality

      5.0
    • Cost

      5.0
    • NPS

      5.0
    Read Full Reviews on Clutch Visit Site
    • $5,000+
    • 1,000 - 9,999 employees
    • Canton, OH

    Ameridial is a call center agency. They are headquartered in North Canton, Ohio, and have additional offices in Greenville, S.C. and Bangor, Maine. Founded in 1987, Ameridial has about 193 employees that provide non-voice BPO and back office services.  Clients are in the healthcare, nonprofit, and consumer products and services sectors. 

    Clients

    • Flexigroup
    • Monat
    • Samsung
    • KFC

    Industries

    Notable Project

    Ameridial provides call center services and outreach for a data modeling company. The team performs inbound and outbound calls, web service and IVR in this 10-year ongoing partnership.

    "They truly want the program to be successful."

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  • 15
    • Scheduling

      5.0
    • Quality

      4.9
    • Cost

      5.0
    • NPS

      5.0
    Read Full Reviews on Clutch Visit Site
    • Undisclosed
    • 50 - 249 employees
    • Toronto, Canada

    24H Virtual is a voice and customer service agency based in Toronto with over 10 employees. They specialize in voice services for small and mid-market companies in the fields of transportation, education, and financial services.

    Industries

    Notable Project

    A law firm backend service hired 24H Virtual to provide call answering services. They trained a team of receptionists to answer calls from the client's customers and its management and technical aspects.

    "I can’t ask for more — they do what they say they’ll do."

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  • 16
    • Scheduling

      4.5
    • Quality

      5.0
    • Cost

      5.0
    • NPS

      4.5
    Read Full Reviews on Clutch Visit Site
    • $1,000+
    • 50 - 249 employees
    • Tempe, AZ

    Calibrus is a customer management contact center headquartered in Tempe, Ariz. Founded in 2013, they have about 40 employees that have clients in the business services, consumers products, financial service, healthcare, and retail industries. Their solutions include third-party verification, outbound lead generation, and hosted call recording.

    Industries

    Notable Project

    Calibrus provides customer verification services for a mid-market business in Florida to increase their contact with their customers. Their' level of service impressed the client and saves their business around $2,000 monthly on labor and administrative costs.

    "I think their service is of good quality. The calls are well received and there are no complications." — Customer Service, Mid-size Firm

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  • 17
    • Scheduling

      4.7
    • Quality

      4.0
    • Cost

      4.3
    • NPS

      4.2
    Read Full Reviews on Clutch Visit Site
    • $1,000+
    • 250 - 999 employees
    • Chennai, India

    4D Global is a medical billing company based in Chennai, India, with an office in Scottsdale, Ariz. Founded in 2015, the agency employs a team of over 50 to provide non-voice BPO/back office services and call center services to clients in the healthcare and medical industries.

    Industries

    Notable Project

    4D Global worked with an IT company to assist in a variety of different projects, from staff augmentation and billing to retirement and health insurance management. With their keen business understanding, they delivered a tailored experience, saving the client about $100,000 per month.

    "Their quality of service is excellent." - IT Director, IT Company

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  • 18
    • Scheduling

      5.0
    • Quality

      5.0
    • Cost

      4.2
    • NPS

      4.4
    Read Full Reviews on Clutch Visit Site
    • Undisclosed
    • 50 - 249 employees
    • Charleston, SC

    Call Experts is a contact center outsourcing firm headquartered in Charleston, South Carolina. Founded in 1982, they now have over 200 employees distributed between three call centers on the US east coast. Call Experts provides expert services for voice support, including virtual receptionist services, inbound appointments, and customer support.

    Clients

    • Charleston Water System
    • College of Charleston
    • CharlestonGI

    Industries

    Notable Project

    Call Experts provides voice customer support for a mid-size US IT firm. The client was receiving more calls than they could adequately service, and wanted to free up resources to focus on growth. By partnering with Call Experts, they saved hundreds of customer service working hours. As a result, the client has markedly improved the efficiency of their operations.

    "I like the ease of use and reliability of the services. It allows me to communicate with customers in a remarkably more efficient and time saving manner." — Manager, IT Firm

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  • 19
    • $1,000+
    • 50 - 249 employees
    • Omaha, NE

    Complete Call Solutions is a voice services outsourcing firm in Omaha, Nebraska. Founded in 2008, they have about 74 employees that serve clients in the retail, hospitality, and financial services sectors. 

    Industries

    Notable Project

    Complete Call Solutions provided Tier I phone support. The team had to answer questions, fix reports, and escalate issues as needed.

    "Despite initial challenges, the team did a fantastic job."

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  • 20
    • Scheduling

      4.9
    • Quality

      4.9
    • Cost

      4.8
    • NPS

      4.9
    Read Full Reviews on Clutch Visit Site
    • $1,000+
    • 10 - 49 employees
    • Toronto, Canada

    Veta Virtual Receptionist is a phone answering service. They are headquartered in Toronto, Canada and have a small team that provides voice services. The company was founded in 2020.

    Industries

    Notable Project

    Veta Virtual is providing virtual receptionist services for a law firm. They're tasked with answering all inbound calls and providing customer support services.

    "They are able to fix things quickly, and they always find new ways to improve their service."

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  • 21
    • Scheduling

      5.0
    • Quality

      4.8
    • Cost

      4.2
    • NPS

      4.5
    Read Full Reviews on Clutch Visit Site
    • $1,000+
    • 10 - 49 employees
    • Palo Alto, CA

    ProComm is a teleservice company based in Palo Alto, Calif. Founded in 1991, they have about 50 employees and have clients in the healthcare industry. They specialize in voice and BPO services.

    Industries

    Notable Project

    ProComm provided answering services and scheduling to a telecommunications firm to increase their customer service, which helped improve the company's efficiency. 

    "They meet our expectations and have even gone above them." — Customer Service Manager, Telecommunications Firm

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  • 22
    • $1,000+
    • 1,000 - 9,999 employees
    • Woodburn, OR

    MattsenKumar is a back office services provider based in Woodburn, Ore., with an office in Gurgaon, India. Founded in 2010, MattsenKumar's team of 364 employees offers voice/call center services and non-voice BPO/back office services.

    Industries

    Notable Project

    MattsenKumar was hired to take over the responsibility of answering this products firm's phone calls. Making up 25% of the client's employees' work, MattsenKumar has been able to fulfill its role by respecting deadlines and being able to solve customers' problems 90% of the time, with efficiency increasing with every month the company stays on.

    "Work these past months has been flawless. They are getting better with their dealings with customers and have been able to generate a strategy to solve the problems in the calls to be more efficient and effective each time." - Director, Products Firm

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  • 23
    • $1,000+
    • 250 - 999 employees
    • Noida, India

    A1 Call Center is a CISCO-based outsourcing call center in Noida, India. Founded in 2009, the company has a team of 6 that specialize in back office and call center services. They primarily work with clients in the consumer products, media, and education industries. 

    Clients

    • BetterU
    • BIBA
    • Network 18
    • MMI Online

    Industries

    Notable Project

    A1 Call Center provided customer verification services for a telecommunications company. They conducted outbound calls to collect customer feedback. The former client used the collected data to update their policies and improve their services.

    "It has been a very happy, very enjoyable experience." – Administration Associate, Telecommunications Company 

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  • 24
    • Scheduling

      5.0
    • Quality

      5.0
    • Cost

      5.0
    • NPS

      5.0
    Read Full Reviews on Clutch Visit Site
    • $1,000+
    • 250 - 999 employees
    • Honolulu, HI

    Connext Global Solutions is a non-voice bpo/back office services company. The midsize Honolulu, Hawaii-based agency was launched in 2014. Their team focuses on non-voice bpo/back office services, finance & accounting outsourcing (FAO), voice services, and business consulting.

    Industries

    Notable Project

    A construction accounting management firm hired Connext Global Solutions to augment their staff for their internal processes. The vendor now makes up for nearly two-thirds of their workforce. 

    "We have enjoyed working with Connext and have developed a deep relationship with the company."

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  • 25
    • Scheduling

      5.0
    • Quality

      5.0
    • Cost

      4.5
    • NPS

      4.5
    Read Full Reviews on Clutch Visit Site
    • $1,000+
    • 10 - 49 employees
    • Richardson, TX

    VoiceStamps is a professional IVR hosting and design service provider based in Richardson, Texas. Founded in 1999, their now 2 person team specializes in voice services and transcription. VoiceStamps works with a variety of industries including business & financial services and healthcare.

    Industries

    Notable Project

    An IT company hired VoiceStamps for their outbound dialing services. Their goal was to save money, considering they handle about 70% of calls a day. The client thinks VoiceStamps provides them with great work and information.

    "Their quality is their best strength."– Owner, IT Company

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  • 26
    • $1,000+
    • 250 - 999 employees
    • New Delhi, India

    Founded in 2011, Call2Customers is an outsourced call center in New Delhi, India with roughly 250 employees who provide voice and BPO services. They focus on B2B lead generation and B2C telemarketing for clients.

    Clients

    • BETA IT
    • TalkWire
    • Wealth Partner Australia
    • Verified Learning

    Industries

    Notable Project

    Call2Customers provides B2B telemarketing services and serve as an outsourced call center for a freight forwarding company. They do all staffing and handle various tasks.

    “Call2Customers handles a lot of work, and they are very cooperative.”

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  • 27
    • Scheduling

      4.2
    • Quality

      4.5
    • Cost

      3.7
    • NPS

      4.5
    Read Full Reviews on Clutch Visit Site
    • $1,000+
    • 250 - 999 employees
    • Redwood City, CA

    Salesify is an information technology firm that has offices in the United States, the Philippines, and India. Founded in 2005, Salesify's team of over 1,500 employees have over a decade of experience specializing in call center services. The firm also offers big data and back-office services to its clients. 

    Clients

    • Microsoft
    • IBM
    • Oracle
    • Cisco

    Industries

    Notable Project

    Salesify provided a technology firm with customer support and call center services. The client wanted to improve customer service and collect feedback from consumer interactions. The team at Salesify performed voice call services for the client. The firm collected and organized the data collected from the calls for the client. Salesify's efficiency particularly impressed the client. 

    "They can handle lots of traffic from consumers without failure." – VP of IT, Technology Firm 

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  • 28
    • $1,000+
    • 250 - 999 employees
    • Kyiv, Ukraine

    Answering service Global Bilgi was established in 2008. Their midsize team is in Kyiv, Ukraine and Dnipro, Ukraine. Their services include voice services, non-voice bpo/back office services, CRM consulting and SI, HR services, and more.

    Notable Project

    Global Bilgi provides BPO services for a telecommunications company. The team conducts telesales and customer service, handling incoming calls and creating new business processes from scratch.

    "They are a company that rapidly adopts innovations, which is important for the booming market in Ukraine."

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  • 29
    • Scheduling

      4.9
    • Quality

      4.9
    • Cost

      5.0
    • NPS

      4.9
    Read Full Reviews on Clutch Visit Site
    • Undisclosed
    • 10,000+ employees
    • Wei Fang Shi, China

    Welsend Telecom Co., Ltd. Is a CRM consulting and SI company. Their large team is in Weifang, China; Chengdu, China; Mianyang, China and Rizhao, China. Their services include CRM consulting and SI, voice services, and non-voice bpo/back office services. The firm was founded in 1999.

    Industries

    Notable Project

    Welsend had sent 300 staff members to provide call center services for an airline. These included project managers, operation managers, floor supervisors, team managers and more. 

    "We really appreciate the accountability of Welsend team from their ops to top management."

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  • 30
    • Scheduling

      4.4
    • Quality

      4.6
    • Cost

      4.4
    • NPS

      4.5
    Read Full Reviews on Clutch Visit Site
    • $5,000+
    • 1,000 - 9,999 employees
    • Mahwah, NJ

    DialAmerica is a business process outsourcing firm headquartered in Mahwah, N.J. with offices in New York City, Athens, Ga., Charleston, and Cleveland. Founded in 1957, they have over 5000 employees. Their services include voice call process outsourcing, but they offer non-voice services as well. 

    Clients

    • TIME Magazine
    • GE Capital Bank
    • Special Olympics

    Industries

    Notable Project

    DialAmerica provides customer support outsourcing for a large Pittsburgh-based retailer. The client receives over 1500 calls daily and needed robust support to handle that level of volume. DialAmerica saved the client time and resources on inbound calls, and consistently achieves a high level of service.

    "Whenever we have questions they answer the questions very promptly... they seem perfect." – Sales Manager, Retail Firm

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Based on your budget, timeline, and specifications we can help you build a shortlist of companies that perfectly matches your project needs. Schedule a free consultation with a Manifest Analyst.

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