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Pinnacle

YC S24

San Francisco, US · Founded 2024 · 2 employees · 5 known investors

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Pinnacle provides an API for sending RCS, SMS, MMS, and iMessage messages with features like rich cards, carousels, and quick replies. The platform serves businesses of all sizes that need to send marketing campaigns, transactional alerts, and customer conversations at scale.

Also known as Pinnacle Software Development, Inc. · InsightForge

Developer ToolsE-commerceEnterprise SoftwareMarketing TechSaaSB2BSalesSMSUnited States of AmericaAmerica / Canada

Founders & leadership· Y Combinator alumni (S24)

Pinnacle was founded in 2024 by Sean Roades, Ivan Zhang, and Justin Zheng.

SRSean Roades
Sean RoadesCTOHe holds a degree in computer science and econometrics from Harvard College and previously worked at YouTube developing machine learning models for advertising systems.
IZIvan Zhang
Ivan ZhangFounderIvan Zhang studied Computer Science and Statistics at Harvard College and worked as a software engineer at Amazon building internal tools, followed by a role at General Catalyst's Customer Value Fund where he developed an open-source data library.
JZJustin Zheng
Justin ZhengCo-founder

Investors · 5

Amino CapitalreportedPalo Alto · $100K – $10M

How we know: Y Combinator's founder network · Not right? Tell us

Intuition CapitalreportedNew York

How we know: Y Combinator's founder network · Not right? Tell us

Lynett Capital PartnersreportedJupiter

How we know: Y Combinator's founder network · Not right? Tell us

Phoenix FundreportedNew York

How we know: Y Combinator's founder network · Not right? Tell us

Related companies · 7

Neutral TandemSinch provides cloud communications tools that let businesses connect with their customers across messaging and other channels. It serves companies looking to build customer engagement through communication technology.
AptenApten builds AI agents that automate student enrollment workflows for educational institutions across SMS, phone, email, and web channels. The platform manages student communications throughout their lifecycle—from prospecting to re-engagement—while maintaining conversation context across all touchpoints and integrating with existing CRM and admissions systems.
TwilioTwilio provides a cloud-based communications platform that enables businesses to integrate voice, messaging, and video into applications using APIs. The platform combines communication channels, contextual data, and AI orchestration for enterprises and developers building customer experiences.
TermiiTermii provides infrastructure that uses AI to ensure critical transactions—including authentication, payments, checkouts, and fraud notifications—complete successfully, serving banks, fintech companies, e-commerce platforms, and other digital services globally.
SendoSendo 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.
SmobiSmobi is an AI-powered messaging platform that enables brands to send interactive RCS (Rich Communication Services) and SMS campaigns directly to customers' phones. The platform offers drag-and-drop campaign builders, AI-powered customer service agents, product card carousels, and event booking capabilities, designed for ecommerce, customer engagement, and customer support use cases.
PlivoPlivo provides an enterprise communication platform combining AI agents with APIs for messaging and voice functionality, serving businesses that need to engage customers at scale across 190+ countries globally.

Companies working in the same space as Pinnacle.

Legal entities · 1

corporate structure
Pinnacle Software Development, Inc.

In the news

Pinnacle📱- RCS (Next-Gen SMS) API for developersycombinator.com · Sep 2024

Frequently asked questions

What does Pinnacle do?
Pinnacle provides an API for sending RCS, SMS, MMS, and iMessage messages with features like rich cards, carousels, and quick replies. The platform serves businesses of all sizes that need to send marketing campaigns, transactional alerts, and customer conversations at scale.
Who founded Pinnacle?
Pinnacle was founded by Sean Roades, Ivan Zhang, Justin Zheng in 2024.
Who are Pinnacle's investors?
Pinnacle's investors include Y Combinator, Amino Capital, Intuition Capital, Lynett Capital Partners, Phoenix Fund.
Where is Pinnacle headquartered?
Pinnacle is headquartered in San Francisco, US.