Productivity

Mio

Website

Mio powers seamless communication between Slack, Microsoft Teams & Webex Teams. The Austin, Texas-based company was founded by Tom Hadfield and James Cundle in November 2015. M.io has raised $12m from investors including Goldcrest Capital, Eniac Ventures, Two Sigma Ventures, Khosla Ventures, Y Combinator and Capital Factory. Ready to sync your team

Founded 2015Origin source ↗Checked 2026-09-15

Overview

Mio powers seamless communication between Slack, Microsoft Teams & Webex Teams. The Austin, Texas-based company was founded by Tom Hadfield and James Cundle in November 2015. M.io has raised $12m from investors including Goldcrest Capital, Eniac Ventures, Two Sigma Ventures, Khosla Ventures, Y Combinator and Capital Factory. Ready to sync your teams? Learn more and get started at https://m.io/

Company description As recorded 2026-11-08
About
ProductivityInfrastructureBusinessesMid marketSubscription

Founders & team

Previously Prompt, Message.io

Company history As recorded 2026-11-08

Tom Hadfield

Founder/CEO

Tom Hadfield is a British entrepreneur whose first company, Soccernet.com, was sold to ESPN for $40 million when he was 17 years old. Today, Tom is the CEO of Mio, an enterprise messaging startup based in Austin, Texas backed by Y Combinator, Khosla Ventures and Capital Factory. Tom graduated from Harvard University in 2008 and he is a board member at Heifer International, a charity working to end hunger and poverty around the world.

Founder profile As recorded 2026-09-15

James Cundle

Founder/CTO

Repeat technical co-founder, security first engineer with multi-stack and devops experience applied to multiple verticals over the last 20+ years. Excellent track record of delivering projects for creative business thinkers. Big picture awareness, rapid prototype and forward thinker in fast moving, small team environments. Solid experience in delivering compliance and SOC2 in a start up environment.

LinkedIn X
Founder profile As recorded 2026-09-15
12team members reported
Source-reported As recorded 2026-09-15

Founded 2015 · Source

News & product activity

Sources & observations

Y Combinator

Profile depthenriched profile
Website observationwebsite reachable
Last website check2026-11-11
Location · source statedAustin, TX, USA
Pricing evidenceA pricing page was detected
Maturity: Not assessed · 4 of 6 areas documented

Source-based assessment · automated evidence rules

The retained text does not establish product availability or customer use.

Maturity is an evidence-based assessment, not a success rating. It may understate the current stage where evidence is limited. Coverage records documented areas, not a complete or independently audited company history.

Stage definitions
independent websitesource corroborationreachable websitedescriptive evidenceclassified market and modelsourced peoplesourced founding yearpricing page observed
startup.observe Directory coverage · Sources & method