Build Forever launches Extra, an AI-powered personal email app that reimagines the inbox as a 'for you' feed

Naveen Gavini, former CPO of Pinterest and co-founder of Build Forever, launched Extra on the App Store yesterday — an AI-powered personal email app designed around information consumption rather than communication.

The core argument is that twenty years of email innovation has optimized for sending faster, not for managing what you receive. On the personal side, most people receive far more email than they send, which makes the standard inbox model — sorted by recency — the wrong interface entirely. Extra reframes personal email as a "for you" feed, surfacing what matters and suppressing the rest, rather than presenting an undifferentiated chronological pile.

“With Extra, it keeps track of what's important for you, so you never have to miss something. It helps you clean up your email, organize it around your life, and it does things proactively for you in the background. This endless to-do list feels not so overwhelming.”

What it does

• Surfaces important emails based on personal context, so users don't miss things that matter
• Organizes the inbox around a user's life rather than around sender and timestamp
• Handles cleanup and unsubscribes proactively in the background
• Acts as a distribution layer for agentic actions — the idea being that email already holds the personal data needed to trigger downstream tasks without requiring users to set up integrations manually

Gavini says some beta users came in just to clean up their inbox and left feeling "lighter" — the onboarding flow restructures the inbox around the user's life in roughly five minutes.

The business model

Gavini draws directly on his Pinterest background. The long-term monetization plan centers on advertising, with a premium ad-free tier as an alternative. The pitch to marketers is that promotional emails from brands users already buy from are currently buried in promotions tabs, where click-through rates are low. Extra would surface those emails natively, in a context where the user has opted in and is already engaged. Gavini says CMOs shown the product responded positively. A subscription tier for users who don't want ads is also in the mix, though no pricing has been announced.

The competitive question

Google is aware AI can be powerful in email and is building features, but Gavini's bet is that rapid iteration is what this problem requires — and that a focused consumer product company can move faster than a platform protecting a legacy interface. Whether that window stays open is the real uncertainty; Gmail's scale and data advantage is the obvious ceiling on how far a standalone app can grow.

Build Forever is available now on the App Store.