Emma Email vs Upstream
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Emma Email
A minimalist email client focused on speed and simplicity to help users achieve inbox zero. It offers a clean interface and thoughtful defaults to reduce clutter and boost productivity. Currently supports multiple Gmail accounts on iPhone.
- Minimalist design
- Inbox zero focus
- Fast and speed-optimized
- Reduces clutter
- Supports multiple Gmail accounts
- Clean interface
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Emma is a Newton-inspired email client for iPhones. Your inbox has a bottom. Fewer features and less spam get you there. WORKS WITH GMAIL AND OUTLOOK (ICLOUD COMING) As many accounts as you need. ONE-TAP UNSUBSCRIBE Tap once and tomorrow's inbox is lighter. READ RECEIPTS Know when your emails are read. TEXTED 2FA CODES Emailed two-factor codes are sent to you via text message for easy prefill. SET ASIDE Emma has a single non-inbox folder for emails that aren't actionable today. TRUE DARK MODE Dark themed app, dark themed emails. PRIVACY Emma does not persist your emails. Full stop. NOT INCLUDED AI, calendar, chat, snooze, templates. Emma is devoted to the closure found at the bottom of your inbox. She never sends you email. Not even a welcome email.
Upstream
This AI-powered inbox automatically organizes emails, drafts replies in your unique writing style, and sends follow-ups. It learns your workflow to minimize distractions and ensure no important messages are missed.
- AI email triaging
- Personalized draft writing
- Automated follow-ups
- Self-organizing inbox
- Learns user workflow
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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.
Screenshots
Verdict
The clearest difference is rating: Emma Email at 4.6 against Upstream's 3.7. Emma Email also leads on review sentiment (71% vs 50%) and ratings volume (11 vs 3). On price, update cadence, ads and in-app purchases there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Emma Email holds the better App Store score, 4.6 against 3.7. Both are backed by a comparable volume of ratings — 11 and 3 respectively. Written reviews point the same way: 71% of Emma Email's written reviews are positive against 50% of Upstream's.
Emma Email ships an update weekly, Upstream every 2 weeks. The most recent releases landed on October 5, 2026 and October 2, 2026 respectively.
| Parameter | Emma Email | Upstream |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (11 ratings) — better | 3.7 (3 ratings) |
| Positive reviews | 71.4% of reviews — better | 50.0% of reviews |
| Number of ratings | 11 — better | 3 |
| Update frequency | Weekly — better | Every 2 weeks |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone | iPhone, iPod — better |
| Requires iOS | 16.4 | 15.1 — better |
| Further details — not scored | ||
| Size | 56 MB | 87 MB |
| Age rating | 4+ | 4+ |
| Developer | Castle Labs LLC | Upstream Labs |
Customer experience
Emma Email
Upstream
In-app purchases
Emma Email
No in-app purchases
Upstream
No in-app purchases







