The Fastest Growing Call Center Company in the USA

## MCI (Mass Markets): U.S.-Based BPO and Call Center Outsourcing

MCI, operating under the Mass Markets brand at massmarkets.com, is an U.S.-based Business Process Outsourcing and Customer Experience company headquartered in North America. The company describes itself as one of the fastest-growing privately held outsourcing providers on the continent, citing 18 appearances on Inc. Magazine's list of fastest-growing private companies in the last 20 years. That is a verifiable claim worth checking, and it does set MCI apart from most mid-market BPO providers who rarely maintain that kind of growth consistency over two decades.

MCI's core positioning is broad: it blends call center operations, back-office administration, AI-driven CX technology, and revenue cycle management under one roof. The practical implication for buyers is that you can engage MCI for a traditional inbound or outbound call center program and layer in automation or analytics from the same vendor, rather than managing separate contracts. Whether that integration is genuinely mature or largely a bundling pitch is the first thing I would probe in a sales call.

### Service Lines: What MCI Actually Does

On the inbound side, MCI handles customer service, live chat, email support, appointment setting, inbound sales, fundraising, tech support, and emergency call center services. These are standard call center service lines, but the inclusion of emergency call center services and fundraising suggests some experience with high-stakes, time-sensitive call flows, which matters for buyers in healthcare, utilities, or non-profit sectors.

Outbound services include B2B and B2C sales, debt collection, lead generation, telemarketing, and outbound sales more broadly. Debt collection in particular carries regulatory weight under FDCPA rules, so buyers in financial services or healthcare accounts receivable should specifically ask about compliance training, call monitoring protocols, and state-level licensing coverage before engaging.

The back-office and administration portfolio covers omnichannel engagement, customer retention programs, call monitoring services, dialer and ACD administration, and content moderation. Content moderation at scale requires a different staffing and QA model than voice support, so if that is your core need, confirm whether MCI runs dedicated moderation teams or folds it into general agent pools.

MCI's AiCX suite is its technology overlay: AI IVR and IVA solutions, contact center automation, CRM and telephony integration, natural language processing, cloud call center software, and AI-driven data and analytics. The framing is compelling but fairly common in 2024 BPO marketing. What I would ask: which of these are proprietary versus third-party platforms resold under a MCI label, what does implementation actually look like, and do they have reference clients who have deployed AI IVR and then scaled it?

Revenue Cycle Management and Accounts Receivable Management (ARM/RCM) round out the portfolio. These are specialized processes with direct revenue impact and significant compliance exposure, particularly under HIPAA. Buyers in healthcare or insurance considering MCI for RCM work should treat this as a separate evaluation from their call center assessment.

### Industries Served

MCI explicitly lists automotive, energy and utilities, financial services, government and municipal, healthcare, insurance, property and real estate, retail and ecommerce, small business, technology, telecommunications, and transportation and travel. That is a wide vertical footprint. Width does not always equal depth, so the buyer's job is to ask specifically how many active programs MCI runs in your vertical today and to request a reference from a program of similar size and complexity.

Healthcare and insurance stand out as verticals where MCI's RCM capability adds a specific differentiator beyond generic call center work.

### Delivery Locations and Coverage

MCI operates delivery locations across the United States, Canada, Central America, Europe, the Philippines, and South Africa. This is a genuinely global footprint, which means MCI can structure nearshore, offshore, or onshore delivery depending on your cost and timezone requirements. For U.S. Buyers who need bilingual Spanish support with timezone alignment, Central America is the obvious conversation. For cost-driven back-office or data work, Philippines and South Africa are the offshore options in play.

A realistic pricing expectation: U.S. Onshore agent hours run roughly $22 to $45 per hour for standard call center work; nearshore Central America would be in the $12 to $20 range; Philippines and South Africa offshore would fall closer to $8 to $16 per agent hour. MCI has not published specific rates, so treat these as editorial market benchmarks to anchor your negotiation, not MCI-specific quotes.

### Compliance and Security Posture

MCI's site references healthcare, insurance, financial services, and government work, all of which imply exposure to HIPAA, PCI DSS, and potentially GLBA requirements. No specific certifications are explicitly confirmed in the available research, so buyers in regulated industries should request current compliance documentation directly. Do not assume certification based on vertical experience alone.

### Editor's Take

MCI's scale and longevity are genuine differentiators. Eighteen appearances on the Inc. Fastest-growing list over 20 years is not something a vendor invents. The portfolio breadth, multi-geography delivery, and AI technology layer make MCI a credible shortlist candidate for mid-market to enterprise buyers who want a single vendor across voice, digital, and back-office work.

The tradeoffs to examine honestly: broad portfolios can mean uneven depth. The AI and technology claims are worth pressure-testing specifically. And the combination of call center, RCM, and content moderation under one roof is only an advantage if MCI has genuinely separate practice leads for each, not a generalist agent pool handling all three.

Before signing, I would verify: who manages your specific program day-to-day (not the sales team), what QA coverage looks like as a percentage of calls reviewed, how reporting is structured (does it explain variance or just report green metrics), and whether the delivery location proposed for your work has relevant industry experience. MCI appears to have the operational depth to support complex, multi-channel programs, but confirm the specific team, not just the brand.