Founder of a listed tool
Rob Haber
Co-founder, Round One, Inc., named behind the Sendblue listing on Anchor Terminal.
What Rob builds
Sendblue is a hosted API from Round One, Inc. for sending and receiving iMessage, RCS, SMS and MMS from dedicated or shared phone numbers. Agents use a REST API, TypeScript and Python SDKs, a CLI and an MCP server.
Co-founder, Round One, Inc., researched 26 October 2026 · the people behind it
Works with
- Alex Luis Co-founder, Round One, Inc.
Questions
Who is Rob Haber?
Rob Haber is co-founder and CEO of Sendblue, an iMessage platform for sales teams from Y Combinator's Summer 2023 batch. He was previously a machine learning engineer at Scale AI, and before that worked at Amazon and Regeneron.
What does Round One, Inc. make?
Anchor Terminal lists Sendblue from Round One, Inc.. Sendblue is a hosted API from Round One, Inc. for sending and receiving iMessage, RCS, SMS and MMS from dedicated or shared phone numbers. Agents use a REST API, TypeScript and Python SDKs, a CLI and an MCP server.
How are Rob's tools graded?
Sendblue is graded C, 61.7 out of 100, on Anchor Terminal's benchmark, which scores every listing against the same checklist.
These are the people building the tools we list, named for their public role in the company or project behind a listing, from public pages, with the date it was researched. They don't work for Anchor Terminal (our own team is on the about page). We show public roles, public profiles and what the listing pages show, nothing private. To correct something, send an about or a photo, or have a page removed, write to privacy@anchorterminal.com.