An AI inbox that sorts email, drafts replies in your voice, and follows up.
What is Upstream
Upstream is an AI email inbox that organizes itself. It sorts, flags, and surfaces messages that need attention, drafts replies that match the user's writing, and writes follow-ups for quiet threads.
- 01Automatic sorting and flagging of email
- 02surfacing messages that need attention today
- 03drafts written in your own voice for a specific recipient and thread
- 04follow-up nudges added to the inbox for quiet threads
- 05no rules or folders to maintain
Free to download from the App Store.
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+ CompareData month: — · Downloads and in-app purchase revenue are third-party estimates (trailing 30-day window), aggregated monthly. Revenue covers App Store and Google Play in-app purchases (including subscriptions) only — excluding Android app stores in mainland China and other payment channels such as web subscriptions. See methodology.