Comparison

Mailbox Email Client for Gmail vs Emma Email

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Mailbox Email Client for Gmail

This app streamlines Gmail management with AI-powered summaries, multi-account support, and smart scheduling. Its intuitive design and fast swipe actions help users focus on important messages and boost productivity.

Highlights
  • AI email summarization
  • Multi-account management
  • Smart email scheduling
  • Lightning-fast swipe actions
  • Threaded conversations
  • Modern, clean interface
Features
Read full description

Mailbox for Gmail - Smart Email Client Experience Gmail like never before with AI-powered simplification and beautiful design. Mailbox for Gmail transforms your email experience with intelligent features that help you focus on what matters. Manage multiple Gmail accounts, simplify complex emails with AI, and stay organized with powerful productivity tools. KEY FEATURES AI Email Simplification • Get instant summaries of long emails • Extract key points automatically • Powered by OpenAI for accurate understanding • Save time reading newsletters and reports Multi-Account Management • Seamlessly switch between multiple Gmail accounts • Each account keeps separate preferences • Instant switching - no re-authentication needed • Secure OAuth2 authentication with Google Smart Email Scheduling • Snooze emails to reappear at the perfect time • Schedule messages for later review • Keep your inbox focused on what's urgent Productivity Features • Lightning-fast swipe actions • Star important messages • Archive, delete, or snooze with a swipe • Thread conversations for context Beautiful Design • Modern, clean interface built with SwiftUI • Smooth animations and intuitive navigation • Customizable text sizes for comfortable reading • Dark mode support (coming soon) Privacy & Security • Secure OAuth2 authentication • Your credentials never stored on servers • Data encrypted with iOS Keychain • No email content shared with third parties Built for iOS • Native iOS 15+ performance • Optimized for all iPhone sizes • Offline access to cached emails • Fast sync with Gmail servers PERFECT FOR • Professionals managing multiple email accounts • Anyone overwhelmed by long email threads • Users who want AI-powered productivity • People seeking a modern Gmail experience TRY DEMO MODE Not ready to connect your account? Try our built-in demo mode with realistic fake emails to explore all features risk-free! REQUIREMENTS • iOS 15.0 or later • Gmail account(s) • OpenAI API key (for AI features - optional) GET STARTED IN SECONDS 1. Sign in with your Gmail account 2. Customize your preferences 3. Start managing emails smarter Download Mailbox for Gmail today and experience email productivity reimagined! .

About

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.

Highlights
  • Minimalist design
  • Inbox zero focus
  • Fast and speed-optimized
  • Reduces clutter
  • Supports multiple Gmail accounts
  • Clean interface
Features
Read full description

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.

Screenshots

Mailbox Email Client for Gmail3 screens
Emma Email4 screens

Verdict

The call

The clearest difference is update cadence: Emma Email at weekly against Mailbox Email Client for Gmail's every 5 weeks. On price, rating, ratings volume and ads 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.6 for Mailbox Email Client for Gmail against 4.6 for Emma Email. Both are backed by a comparable volume of ratings — 14 and 11 respectively.

UpkeepUpdate frequency

Mailbox Email Client for Gmail ships an update every 5 weeks, Emma Email weekly. Both last shipped on October 5, 2026.

Scorecard1 real difference · 9 level
Mailbox Email Client for Gmail versus Emma Email: the parameters behind the verdict, then further details
ParameterMailbox Email Client for GmailEmma Email
PriceFreeFree
Rating4.6 (14 ratings)4.6 (11 ratings)
Positive reviews—71.4% of reviews
Number of ratings14 — better11
Update frequencyEvery 5 weeksWeekly — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhoneiPhone
Requires iOS17.616.4 — better
Further details — not scored
Size9 MB56 MB
Age rating4+4+
DeveloperIndigogoCastle Labs LLC

Customer experience

Mailbox Email Client for Gmail

All ratings14 ratings
Positive92.9%
Neutral0.0%
Negative7.1%

Emma Email

All ratings11 ratings
Positive90.9%
Neutral0.0%
Negative9.1%
Written reviews7 reviews
Positive71.4%
Neutral0.0%
Negative28.6%

In-app purchases

None

Mailbox Email Client for Gmail

No in-app purchases

None

Emma Email

No in-app purchases

Questions

Is Mailbox Email Client for Gmail free?
Mailbox Email Client for Gmail is free to download, with no in-app purchases.
Is Emma Email free?
Emma Email is free to download, with no in-app purchases.
Which has better reviews, Mailbox Email Client for Gmail or Emma Email?
Mailbox Email Client for Gmail and Emma Email are both rated 4.6 out of 5 on the App Store, from 14 and 11 ratings respectively.
Do Mailbox Email Client for Gmail or Emma Email have ads?
Neither Mailbox Email Client for Gmail nor Emma Email shows ads.
Which is updated more often, Mailbox Email Client for Gmail or Emma Email?
Mailbox Email Client for Gmail ships an update every 5 weeks, and Emma Email weekly. Most recently, Mailbox Email Client for Gmail was updated on October 5, 2026 and Emma Email on October 5, 2026.

Other comparisons