Sendo
DefunctYC W22New York City, US · Founded 2022 · 1 employees · 1 known investors
Sendo provides an SMS and RCS API for startups, offering lower pricing than competitors and faster deployment for text messaging features. The platform includes developer documentation, monitoring tools, and simplified 10DLC regulatory compliance.
Also known as Winno
Developer ToolsEnterprise SoftwareMessagingAPISMSUnited States of AmericaAmerica / CanadaFully Remote
Founders & leadership· Y Combinator alumni (W22)
Sendo was founded in 2022 by Nick Rubin and Daniel Lewis.
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Nick Rubinin𝕏FounderNick Rubin studied at Stanford (class of 2021) and has developed software projects ranging from browser extensions to cryptocurrency applications and retail automation tools.
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Daniel Lewisin𝕏FounderDaniel Lewis graduated from Tufts University in 2020 and is building tools for creators to monetize their expertise and insights.
Investors · 1
Competitors · 1
by search overlap
Companies competing with Sendo for the same Google search keywords, organic and paid, via search-intersection analysis.
In the news
Sendo Shuts Down Online Grocery Platform; Exits E-Commerce - Fintech Singaporefintechnews.sg · Jul 2026Frequently asked questions
- What does Sendo do?
- Sendo provides an SMS and RCS API for startups, offering lower pricing than competitors and faster deployment for text messaging features. The platform includes developer documentation, monitoring tools, and simplified 10DLC regulatory compliance.
- Who founded Sendo?
- Sendo was founded by Nick Rubin, Daniel Lewis in 2022.
- Who are Sendo's investors?
- Sendo's investors include Y Combinator.
- Where is Sendo headquartered?
- Sendo is headquartered in New York City, US.