Userfox
The business, the turning points, and the decisions behind them.
Some sections are still being researched2 / 4
Sections to complete：02 · 05
01 / WHAT IT BUILT
What the company did
Userfox was a San Francisco SaaS startup from the Y Combinator Winter 2011 batch, founded by Cesar Alaniz and Peter Clark. It offered 'user retention as a service': a platform that let companies design personalized trigger-based emails — welcome sequences, inactivity nudges and custom drip campaigns — to bring users back and improve retention.
02 / FAILURE REASONS
Material for this section is being gathered and checked. It will appear here once ready.
03 / EVENT HISTORY
Events in the structured record
- Founded
Userfox was founded in San Francisco by Cesar Alaniz and Peter Clark and joined the Y Combinator Winter 2011 batch, building a user-retention-as-a-service email platform.
- Angel round
The company raised a $700,000 angel round from investors including 500 Startups, Y Combinator and Point Nine Capital.
- Acquired by NextRoll
Userfox was acquired by NextRoll (then operating as AdRoll), ending its run as an independent company.
04 / CONTEMPORARY REBUILD ASSESSMENT
Difficulty of rebuilding this project today
Material for this section is being gathered and checked. It will appear here once ready.
Overall assessment: Not completed
05 / CAUSAL CHAIN / AFTERMATH
Material for this section is being gathered and checked. It will appear here once ready.