Customer.io vs Smartek21: Revenue, Funding & Team Size Compared
Customer.io generates $100M in revenue; Smartek21 generates $75.7M. Customer.io is 1.3× bigger than Smartek21 by revenue. The table below compares Customer.io and Smartek21 on funding, valuation, customers, team size and headquarters — every figure GetLatka has verified for each company.
| Company |  Customer.ioThis company |  Smartek21 |
|---|---|---|
| Revenue | $100M | $75.7M |
| Valuation | $690M | Not disclosed |
| Funding raised | $40.3M | Not disclosed |
| Customers | 2.9K | Not disclosed |
| Team size | 250 | 340 |
| Founded | 2012 | 2006 |
| HQ | Portland, United States | Kirkland, United States |
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Customer.io at a glance
Customer.io generates $100M in revenue with 250 employees, headquartered in Portland, United States.
- Revenue
- $100M
- Valuation
- $690M
- Funding
- $40.3M
- Customers
- 2.9K
- Team size
- 250
- Founded
- 2012
Customer.io is a SaaS messaging and marketing automation platform founded in April 2012 by Colin Nederkoorn and a co-founder he met while working in New York. The company enables businesses to send targeted emails and other messages based…
Smartek21 at a glance
Smartek21 generates $75.7M in revenue with 340 employees, headquartered in Kirkland, United States.
- Revenue
- $75.7M
- Team size
- 340
- Founded
- 2006
SmarTek21 stands at the forefront of innovation, leveraging Generative AI to power advanced data ecosystems and industry-leading conversational interfaces that transform customer interactions. Established in 2006, we seamlessly blend human…
Other Customer.io alternatives
Customer.io competes with more than the companies on this page. Browse the full alternative lists to compare revenue, funding and team size across the category.
Customer.io vs Smartek21: frequently asked questions
Is Customer.io or Smartek21 bigger?
Customer.io is the bigger company by revenue, at $100M against $75.7M for Smartek21.
How much revenue does Customer.io make?
Customer.io generates $100M in annual revenue with a team of 250.
How much revenue does Smartek21 make?
Smartek21 generates $75.7M in annual revenue with a team of 340.
How much funding has Customer.io raised?
Customer.io has raised $40.3M in total funding since it was founded in 2012.