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Customer.io

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Customer.io is a behavioral messaging platform for triggering personalized and event-based customer communication.

Email Analytics
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Market Share of Customer.io

Current Customer(s)

2051

Market Share (Est.)

2.18%

Ranking

#3

Top Competitors and Alternatives of Customer.io

The top three of Customer.io’s competitors in the Email Analytics category are Constant Contact with 85.82%, Zoho Campaigns with 6.37%, EveryCloud Email Security with 2.16% market share.

TechnologyDomainsMarket Share (Est.)Versus page
Constant Contact8090485.82%Customer.io vs Constant Contact
Zoho Campaigns60026.37%Customer.io vs Zoho Campaigns
EveryCloud Email Security20382.16%Customer.io vs EveryCloud Email Security
Benchmark12481.32%Customer.io vs Benchmark
EmailAnalytics10251.09%Customer.io vs EmailAnalytics
Pepipost3510.37%Customer.io vs Pepipost
BlueHornet3430.36%Customer.io vs BlueHornet
SparkPost2560.27%Customer.io vs SparkPost
RebelMail140.01%Customer.io vs RebelMail
Dyspatch100.01%Customer.io vs Dyspatch
G-Lock Analytics70.01%Customer.io vs G-Lock Analytics
Metrics Watch50.01%Customer.io vs Metrics Watch
Briefmetrics50.01%Customer.io vs Briefmetrics
Email Aptitude50.01%Customer.io vs Email Aptitude
Ezepo20.00%Customer.io vs Ezepo
MailButler20.00%Customer.io vs MailButler
Bounce Lookup20.00%Customer.io vs Bounce Lookup
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Popular Comparisons

Top Competitors and Alternatives of Customer.io

The top three of Customer.io’s competitors in the Email Analytics category are Constant Contact with 85.82%, Zoho Campaigns with 6.37%, EveryCloud Email Security with 2.16% market share.

Customer.io vs Constant Contact

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Customer.io vs Zoho Campaigns

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Customer.io vs EveryCloud Email Security

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Customer.io vs Benchmark

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Customer.io vs EmailAnalytics

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Customer.io vs Pepipost

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Customer.io vs BlueHornet

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Customer.io vs SparkPost

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Customers of Customer.io

Around the world in 2025, over 2051 companies have started using Customer.io as Email Analytics tool.

CustomersEmployee RangeCityRegionCountrySocial Links
HubSpot10,000+NewtonMassachusettsUnited States
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Staples Canada ULC10,000+Richmond HillOntarioCanada
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Tech For Campaigns10,000+San FranciscoCaliforniaUnited States
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Les Mills International10,000+AucklandAucklandNew Zealand
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Santander10,000+MadridMadridSpain
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Saber Educação10,000+Sao PauloSao PauloBrazil
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Publicis Sapient10,000+BostonMassachusettsUnited States
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Broadcom10,000+Palo AltoCaliforniaUnited States
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Powur10,000+Del MarCaliforniaUnited States
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Shopify10,000+OttawaOntarioCanada
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Customer.io Customers by Products and Services

The top three products and services offering customers that use Customer.io for Email Analytics are Saas (43), Technology (43), Fintech (36).

Customers

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Customer.io Customers by Employee Size

The majority of Customer.io's customers for the email-analytics category fall in the company size of 0 - 9 employees (655 companies), 20 - 49 employees (589 companies), 100 - 249 employees (391 companies).

Employee Size

Customer.io Customers by Geography

The top three geographies of Customer.io for email-analytics are the United States with 1066(61.94%), Brazil with 191(11.10%), United Kingdom with 119(6.91%) customers respectively.

Customers

Employees of Customer.io

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Also see other Products/Services by Customer.io in:

Email Personalization
Email Marketing Automation
Email Analytics

FAQ

Find answers to the most often asked questions by users.

Who are the top Customer.io competitors?

Customer.io’s Top competitors in the email-analytics category are Constant Contact, Zoho Campaigns, EveryCloud Email Security. You can view a full list of Customer.io competitors here. 6sense uses advanced data mining and AI algorithms to track customers and competitors of Customer.io and 40,000 other technologies on the internet. You can also compare Customer.io and its feature with top competitors here : Customer.io vs Constant Contact Customer.io vs Zoho Campaigns Customer.io vs EveryCloud Email Security.

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What is Customer.io customer distribution based on company size?

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What is Customer.io market share in the email-analytics?

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What are the top countries that use Customer.io?

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What are the top industries that use Customer.io?

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