Customer.io
Customer.io is a behavioral messaging platform for triggering personalized and event-based customer communication.
Market Share of Customer.io
Current Customer(s)
2036
Market Share (Est.)
0.23%
Ranking
#8
Top Competitors and Alternatives of Customer.io
The top three of Customer.io’s competitors in the Email Marketing Automation category are MailChimp Marketing with 72.29%, Mailjet with 13.57%, SendinBlue with 9.97% market share.
| Technology | Domains | Market Share (Est.) | Versus page |
|---|---|---|---|
| MailChimp Marketing | 645182 | 72.29% | Customer.io vs MailChimp Marketing |
| Mailjet | 121149 | 13.57% | Customer.io vs Mailjet |
| SendinBlue | 88969 | 9.97% | Customer.io vs SendinBlue |
| Zoho Campaigns | 6544 | 0.73% | Customer.io vs Zoho Campaigns |
| ClickDimensions | 5388 | 0.60% | Customer.io vs ClickDimensions |
| iContact | 4750 | 0.53% | Customer.io vs iContact |
| ONTRAPORT | 2736 | 0.31% | Customer.io vs ONTRAPORT |
| Robly | 1642 | 0.18% | Customer.io vs Robly |
| Vbout | 1337 | 0.15% | Customer.io vs Vbout |
| Benchmark | 1291 | 0.14% | Customer.io vs Benchmark |
| Systeme | 1231 | 0.14% | Customer.io vs Systeme |
| HelpCrunch | 1138 | 0.13% | Customer.io vs HelpCrunch |
| Scribe | 984 | 0.11% | Customer.io vs Scribe |
| Salesforce Email Studio | 968 | 0.11% | Customer.io vs Salesforce Email Studio |
| Bizzy | 669 | 0.07% | Customer.io vs Bizzy |
| Movable Ink | 618 | 0.07% | Customer.io vs Movable Ink |
| Everlytic | 601 | 0.07% | Customer.io vs Everlytic |
| Emma | 504 | 0.06% | Customer.io vs Emma |
| Blueshift | 445 | 0.05% | Customer.io vs Blueshift |
| Ometria | 432 | 0.05% | Customer.io vs Ometria |
Popular Comparisons
Top Competitors and Alternatives of Customer.io
The top three of Customer.io’s competitors in the Email Marketing Automation category are MailChimp Marketing with 72.29%, Mailjet with 13.57%, SendinBlue with 9.97% market share.
Customer.io vs MailChimp Marketing
Customer.io vs Mailjet
Customer.io vs SendinBlue
Customer.io vs Zoho Campaigns
Customer.io vs ClickDimensions
Customer.io vs iContact
Customer.io vs ONTRAPORT
Customer.io vs Robly
Customers of Customer.io
Around the world in 2025, over 2029 companies have started using Customer.io as Email Marketing Automation tool.
| Customers | Employee Range | City | Region | Country | Social Links |
|---|---|---|---|---|---|
| Publicis Sapient | 10,000+ | Boston | Massachusetts | United States |     |
| Endava | 10,000+ | London | England | United Kingdom | |
| Broadcom | 10,000+ | Palo Alto | California | United States | |
| REMAX | 10,000+ | Denver | Colorado | United States | |
| The Global Leaders | 10,000+ | Greenwich | Connecticut | United States | |
| HubSpot | 10,000+ | Newton | Massachusetts | United States | |
| NB Inc | 10,000+ | Richmond Hill | Ontario | Canada | |
| Santander | 10,000+ | Boadilla del Monte | Madrid | Spain | |
| Saber | 10,000+ | Sao Paulo | Sao Paulo | Brazil | |
| John Cradden | 10,000+ | Dublin | Leinster | Ireland | |
Uncover hidden demand and identify accounts ready to buy with 6sense Intent Data.
Customer.io Customers by Products and Services
The top three products and services offering customers that use Customer.io for Email Marketing Automation are Saas (49), Technology (42), Marketing (38).
Customers
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Customer.io Customers by Employee Size
The majority of Customer.io's customers for the email-marketing-automation category fall in the company size of 0 - 9 employees (607 companies), 20 - 49 employees (600 companies), 100 - 249 employees (406 companies).
Employee Size
Customer.io Customers by Geography
The top three geographies of Customer.io for email-marketing-automation are the United States with 919(55.60%), Brazil with 214(12.95%), United Kingdom with 148(8.95%) customers respectively.
Customers
Employees of Customer.io
Also see other Products/Services by Customer.io in:
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-marketing-automation category are MailChimp Marketing, Mailjet, SendinBlue. 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 MailChimp Marketing Customer.io vs Mailjet Customer.io vs SendinBlue.
What is Customer.io customer distribution based on company size?
What is Customer.io market share in the email-marketing-automation?
What are the top countries that use Customer.io?
What are the top industries that use Customer.io?
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