Productivity

Xobni

Website

Xobni makes your inbox and address book smarter. Xobni, and its Smartr product suite, discover all the people you've ever emailed, called or SMS'd, and instantly access a full view of each contact, complete with their photo, job title, company details, email history as well as updates from LinkedIn, Facebook, and Twitter. You can download Smartr

Overview

Xobni makes your inbox and address book smarter. Xobni, and its Smartr product suite, discover all the people you've ever emailed, called or SMS'd, and instantly access a full view of each contact, complete with their photo, job title, company details, email history as well as updates from LinkedIn, Facebook, and Twitter. You can download Smartr for Gmail, Android or iPhone; and Xobni for Outlook and BlackBerry - or connect them all with Xobni Pro.

Company description As recorded 2026-11-08
ProductivityCopilot & assistantBusinesses & consumersIndividual professionalsSubscription

Founders & team

Matt Brezina

Founder

Twice-exited founder of Xobni (acq Yahoo) and Sincerely (acq FTD). I've also now invested in over 80 startups including YC successes: Dropbox, Function of Beauty, Snapdocs, Scratchpad, AlphaFlow, Teleport, and more. I've been deeply involved or led 15+ M&A transactions. I've helped many founders sell secondary shares. I'm also deeply passionate about the built human habitat. Specifically the infrastructure to prioritize safe biking & walking over dangerous and polluting automobiles.

LinkedIn
Founder profile As recorded 2026-09-15
11team members reported
Source-reported As recorded 2026-09-15

News & product activity

Sources & observations

Y Combinator

Profile depthverified profile
Website observationwebsite unreachable
Last website check2026-11-11
Location · source statedSan Francisco, CA, USA
Pricing evidenceNo pricing page confirmed
Maturity: Not assessed · 3 of 6 areas documented

Source-based assessment · automated evidence rules

The source reports an inactive or acquired company; current product identity needs review.

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 corroborationdescriptive evidenceclassified market and modelsourced people
startup.observe Directory coverage · Sources & method