Upstream vs Epistles Mail

An AI inbox that triages itself, drafts in your voice, and follows up so you don’t have to remember to. ORGANIZE EMAILS YOUR WAY Upstream sorts, flags, and surfaces what needs your attention today. Noise gets filed away. No rules to set up or folders to maintain. It learns how you work and gets out of your way. DRAFTS IN YOUR VOICE. NOT A VOICE. Upstream writes like you. Not like AI pretending to be you. It studies how you write, how you talk to this specific person, and what the thread already sounds like, then drafts from there. The reply is waiting before you've finished reading the email. THE FOLLOW-UP WRITES ITSELF Upstream watches the threads going quiet, writes the nudge, and adds it to your inbox to send. The open loops close themselves. The ball never gets dropped.

Epistles is a fast, powerful email app for people who use more than one provider. Bring Fastmail, Gmail, Microsoft 365 / Outlook, ProtonMail, and generic IMAP accounts into one unified inbox, with the polish of a premium client and architecture built for real-world email. MULTIPLE ACCOUNTS, ONE EXPERIENCE See everything in one timeline or drill into a single account when you need focus. Switch providers without switching apps. NATIVE WHERE IT MATTERS Built as a real native mobile experience. Responsive gestures, solid offline behavior, and attention to the small details that make daily email less painful. PRIVACY-FIRST DESIGN Epistles is not an “AI that reads your threads” product. Your mail stays oriented around you and your providers, not server-side content mining for ads or training. ZERO-KNOWLEDGE CLOUD VAULT Cross-device setup backs up connection metadata with encryption designed so the relay can’t unwrap your secrets. LOCAL-FIRST SYNC Keep working when connectivity is spotty; sync when you’re back online. WHO IT’S FOR • Multi-account professionals juggling work and personal mail • Power users coming from Fastmail, Gmail, Outlook, or Proton who want one inbox • Anyone who wants a universal client without giving up control Epistles is independently developed with a simple goal: make excellent email software that respects how people actually use email today. Terms of Use: https://epistles.net/terms/