Company lists · Data refreshed October 2026

Top 25 Customer service inbound & outbound voice, chat & e-mail suppliers based in India

RevenueBase identified 932 company matches for customer service inbound & outbound voice, chat & e-mail suppliers associated with India as of October 2026 and tracks 76,649 professional contacts across them, including 2,944 with verified work emails. Bangalore is the largest hub.

This list covers company matches for customer service inbound & outbound voice, chat & e-mail suppliers associated with India, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed October 19, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list RevenueBase SmartSearch · Exact Recorded Oct 19, 2026 How this list was built
932Companies
76,649Contacts tracked
2,944Verified emails
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The 25 largest customer service inbound & outbound voice, chat & e-mail suppliers based in India

Ranked by team size
Top 25 of 932 company matches for customer service inbound & outbound voice, chat & e-mail suppliers based in India, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 19, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchNoida, IndiaHQ recorded Oct 19, 202610001+15,164 contacts →

Exact match

“iEnergizer is a leading Business Process Outsourcing provider (“BPO”) of customer management solutions dedicated to delivering performance while actively supporting and advocating…”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
2Exact matchNoida, IndiaHQ recorded Oct 19, 202610001+7,304 contacts →

Exact match

“We are an end-to-end Customer Experience (CX) solutions provider offering omni-channel solutions along various customer interaction touch-points from customer sales and support…”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
3Exact matchMumbai, IndiaHQ recorded Oct 19, 202610001+4,585 contacts →

Exact match

“Startek is a leading global provider of technology-enabled business process outsourcing solutions.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
4Exact matchKolkata, IndiaHQ recorded Oct 19, 20261,001-5,0003,828 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
5Exact matchGurgaon, IndiaHQ recorded Oct 19, 20261,001-5,0002,760 contacts →

Exact match

“Globiva is India’s most promising & fastest growing Business Process Management (BPM) company.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
6Exact matchNoida, IndiaHQ recorded Oct 19, 20261,001-5,0001,915 contacts →

Exact match

“NSBBPO is a leading Business Process Outsourcing (BPO/BPM) services organization specializing in the area of CX & business support solutions.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
7Exact matchBhopal, IndiaHQ recorded Oct 19, 20261,001-5,0001,813 contacts →

Exact match

“Transforming Customer Experiences Worldwide** At Technotask, we've embarked on a journey of exponential growth and innovation since our inception in March 2020.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
8Exact matchMumbai, IndiaHQ recorded Oct 19, 20265,001-10,0001,562 contacts →

Exact match

“Established in 2004, Capita India is part of Capita plc, the UK's No.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
9Exact matchNew Delhi, IndiaHQ recorded Oct 19, 20261,001-5,0001,156 contacts →

Exact match

“JindalX, part of OP Jindal Group, is a global service company creating success stories for over 20 years.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
10Exact matchHyderabad, IndiaHQ recorded Oct 19, 20261,001-5,0001,095 contacts →

Exact match

“Even the markets know that we’re the good call’!”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
11Exact matchChennai, IndiaHQ recorded Oct 19, 20261,001-5,000904 contacts →

Exact match

“Started operation on 2004 with 25 employees, Currently iMarque has grown into a powerhouse of over professionals today, consistently achieving an impressive 40% average annual…”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
12Exact matchNoida, IndiaHQ recorded Oct 19, 20261,001-5,000878 contacts →

Exact match

“inTarvo stands for our core ideology of Delivering Value (inT+arvo=Integration + Value).”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
13Exact matchDehra Dun, IndiaHQ recorded Oct 19, 20261,001-5,000780 contacts →

Exact match

“ILeads is one of the fastest growing and leading BPO/KPO/ITES industry based companies in the Dehradun region.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
14Exact matchJaipur, IndiaHQ recorded Oct 19, 2026501-1,000640 contacts →

Exact match

“We at Girnar Care work towards customer satisfaction and it is also a center of customer excellence.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
15Exact matchGurgaon, IndiaHQ recorded Oct 19, 20261,001-5,000606 contacts →

Exact match

“Welcome to the India page of Transcom!”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
16Exact matchPune, IndiaHQ recorded Oct 19, 20261,001-5,000587 contacts →

Exact match

“Our services are credible and scalable Our Key Services Include-Customer service management -Data & business analytics -Sales & marketing -Supply chain services -Accounts payable…”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
17Exact matchMumbai, IndiaHQ recorded Oct 19, 202651-200571 contacts →

Exact match

“At Futwork, we specialize in omnichannel communication solutions that integrate seamlessly with your business.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
18Exact matchBangalore, IndiaHQ recorded Oct 19, 20261,001-5,000436 contacts →

Exact match

“ExpertCallers, a Flatworld Solutions company, is a well-established and reputed modern day call center outsourcing company.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
19Exact matchKolkata, IndiaHQ recorded Oct 19, 20261,001-5,000403 contacts →

Exact match

“As a company with the potential to establish a strong foothold within the BPO domain Mervice promises to go beyond ensuring quality inbound and outbound services.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
20Exact matchBangalore, IndiaHQ recorded Oct 19, 20261,001-5,000344 contacts →

Exact match

“We specialize in end-to-end outsourcing across all industries and functions, including: Customer Support & Call Center Inbound/outbound call handling, technical support, live…”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
21Exact matchAhmedabad, IndiaHQ recorded Oct 19, 2026201-500313 contacts →

Exact match

“The Home for Your Dream Job”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
22Exact matchNew Delhi, IndiaHQ recorded Oct 19, 2026201-500293 contacts →

Exact match

“Navigant Technologies is an ISO 9001-2008 certified international call center headquartered in Delhi, India.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
23Exact matchJaipur, IndiaHQ recorded Oct 19, 2026501-1,000246 contacts →

Exact match

“VKALP is young and transparent BPO, operating out of Jaipur, India.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
24Exact matchNoida, IndiaHQ recorded Oct 19, 20261,001-5,000245 contacts →

Exact match

“At reboot XP, we are not just another customer experience company; we are pioneers in the digital business service landscape, poised to revolutionize how businesses engage with…”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
25Exact matchMumbai, IndiaHQ recorded Oct 19, 202610001+203 contacts →

Exact match

“Altruist BPO is a leading global integrated solutions provider in Business Process Outsourcing, Customer Experience Management and IT Services with presence across India, Africa…”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase

Showing 25 of 932 customer service inbound & outbound voice, chat & e-mail suppliers based in India

See the full list, filter by size, metro and specialty, and access 2,944 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Customer service inbound & outbound voice, chat & e-mail suppliers based in India at a glance

As of Oct 19, 2026
3.8%Verified-email coverage
82.2Average contacts per company
11-50Median size (employees)
8.5%Largest-city concentration · Bangalore
Oct 19, 2026Page data refreshed

Companies by employee count

1-10
163
11-50
351
51-200
233
201-500
83
501-1,000
42
1,001-5,000
42
5,001-10,000
6
10001+
10

Email recency for this list is measured worldwide rather than for India, so it is reported there. Company counts and contact totals on this page are exact for India, over 932 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies
Company records associated with India whose business descriptions match “customer service inbound & outbound voice, chat & e-mail suppliers” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
Ranking
Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification
Every displayed company carries at least one verified work email. RevenueBase tracks 2,944 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh
This page's figures were pulled from the company graph on October 19, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “customer service inbound & outbound voice, chat & e-mail suppliers”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many customer service inbound & outbound voice, chat & e-mail suppliers are there based in India?

RevenueBase identified 932 company matches for customer service inbound & outbound voice, chat & e-mail suppliers associated with India as of October 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Ienergizer tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most customer service inbound & outbound voice, chat & e-mail suppliers?

Bangalore leads with 79 company records, followed by Noida (70) and Kolkata (55).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 2,944 professional contacts with verified work emails tracked across these 932 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on October 19, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.