Customer.io vs Subject Line Generator: Revenue, Funding & Team Size Compared
Customer.io generates $100M in revenue; Subject Line Generator has not disclosed its revenue. The table below compares Customer.io and Subject Line Generator on funding, valuation, customers, team size and headquarters — every figure GetLatka has verified for each company.
| Company |  Customer.ioThis company |  Subject Line Generator |
|---|---|---|
| Revenue | $100M | Not disclosed |
| Valuation | $690M | Not disclosed |
| Funding raised | $40.3M | Not disclosed |
| Customers | 2.9K | Not disclosed |
| Team size | 250 | Not disclosed |
| Founded | 2012 | Not disclosed |
| HQ | Portland, United States | United States |
Want the full dataset? GetLatka tracks revenue, funding and team history for thousands of SaaS companies, with charts, growth rates and founder interviews.
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…
Subject Line Generator at a glance
Generate an email subject line in seconds. Increase open rates and reduce headaches. For free.
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 Subject Line Generator: frequently asked questions
How much revenue does Customer.io make?
Customer.io generates $100M in annual revenue with a team of 250.
How much funding has Customer.io raised?
Customer.io has raised $40.3M in total funding since it was founded in 2012.