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SquareOne

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SquareOne works with the biggest and most established personalities and content creators in gaming

San Francisco, United StatesFounded 2005Consumer Services
Valuation <$5M Last recorded · 2013
Headcount <100 Current team size
Total funding $10–50M Disclosed equity funding
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About SquareOne

SquareOne Mail Inc. emerged in 2014 as an email management solution targeting busy individuals overwhelmed by cluttered inboxes. The company was founded by a team with pertinent industry experience: CEO Branko Cerny, who holds a degree in Psychology and previously worked in marketing at Google; Weidong Shao, who spent five years on the Gmail team; and Arthur Conner, an experienced iOS engineer. Cerny's background in psychology informed the app's core mission: to create a less overwhelming email experience rather than just a more powerful client.

The business operates in the competitive market of email productivity applications, aiming its services at individuals, specifically Gmail users, who struggle with high volumes of commercial and social emails. SquareOne Mail's core product is an iPhone application that rethinks the traditional inbox. Instead of a single, long list of messages, the app automatically sorts commercial and social emails and allows users to group remaining messages into user-created categories called 'Zones'. This approach provides a high-level 'Dashboard' view of all new messages, giving the user control over which zones trigger notifications. A key feature is the ability to silence notifications from specific zones with a simple swipe, allowing users to prioritize their information stream and focus on what is momentarily important. When launched, the app was exclusively for iPhone and supported only Gmail, with plans to add universal IMAP support and an Android version.

Source: Dealroom company data

At a glance

Founded
2005
Headquarters
San Francisco, United States
Sector
Consumer Services

Investors

4 investors on the cap table

From Dealroom's funding and investor records, grouped by the round each investor first entered.

Seed2 investors entered at this stage

Series A1 investor entered at this stage

  • Incept

Series B and later1 investor entered at this stage

  • Three Arch Partners
Team profiled 3 named & role-tagged
Founders Hidden — book a demo/100 quality score
Key operators Hidden — book a demo quality score
Potential founders Hidden — book a demo likely future founders
Startup mafia Hidden — book a demo alumni-founded startups
Talent movements Hidden — book a demo in · Hidden — book a demo out past 12 months

Source: Dealroom Talent Intelligence.

Global footprint

Workforce and web traffic by country
Workforce by country
🇺🇸 United States · San Francisco HQ
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Market sentiment

Posts on X, past 7 days

An AI-synthesised read of the highest-engagement posts about SquareOne on X, ranked by likes and reposts, corporate channels excluded.

Reading the room on X — pulling top posts and synthesizing themes…

Source: X recent search ranked by engagement (likes + retweets) · Synthesis by Claude · Cached for 1 hour

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