| Core Identity |
| Developer | Readdle Technologies Limited | Microsoft Corporation | Edison Software Inc. | Proton AG | Google | 37Signals LLC | Cartasec Pte. Ltd. | Superhuman Labs | Shortwave Communications, Inc. |
| Category | Productivity | Productivity | Productivity | Productivity | Productivity | Productivity | Productivity | Productivity | Productivity |
| Platform | iOS | Android, iOS | iOS, Android | iOS | iOS, Android | Android, iOS | iOS | iOS, Android | iOS |
| Store Metrics |
| Rating | 4.6 / 5 | 4.8 / 5 | 4.5 / 5 | 4.7 / 5 | 4.7 / 5 | 4.7 / 5 | 4.5 / 5 | 4.6 / 5 | 4.8 / 5 |
| Ratings Count | 81,454 | 8,912,852 | 77,436 | 41,863 | 2,403,903 | 4,323 | 8,621 | 3,379 | 688 |
| Price | Free | Free | Free | Free | Free | Free | Free | Free | Free |
| Release Date | May 29, 2015 | Jan 29, 2015 | Apr 27, 2016 | Mar 17, 2016 | Nov 2, 2011 | Jun 14, 2020 | Jun 20, 2017 | Aug 8, 2019 | Jan 11, 2022 |
| Last Updated | Apr 29, 2026 | May 11, 2026 | Apr 27, 2026 | Apr 16, 2026 | Apr 27, 2026 | Mar 31, 2026 | Apr 14, 2026 | Apr 14, 2026 | Feb 26, 2026 |
| Sentiment & Reviews |
| Sentiment | mixed | mixed | mixed | mixed | negative | - | mixed | mixed | positive |
| Score | 35/100 | 35/100 | 65/100 | 42/100 | 35/100 | - | 45/100 | 48/100 | 68/100 |
| Praises | - Unified inbox organization helps users manage multiple email accounts with improved daily productivity
| - Reliable daily utility for work communication and scheduling across multiple platforms
| - High-speed performance and efficient email management capabilities drive user satisfaction for daily productivity tasks
| | - Centralized email management across multiple accounts provides significant convenience for daily communication workflows
| - | - Multi-account management across platforms provides a clean and efficient workflow for power users
| - Productivity & Time Saving
- Clean & Intuitive Design
| |
| Complaints | - Aggressive paywall implementation for basic features like blocking senders frustrates long-term loyal users
| - Frequent application crashes and sync failures following the latest update
| - Persistent authentication failures and forced re-login loops disrupt access to Microsoft and Outlook accounts
| - Syncing and Performance Issues
| - Post-update stability regressions cause frequent application crashes and blank screens during standard email navigation
- Aggressive monetization and AI integration clutter the interface and degrade the core email experience
| - | - Unreliable email synchronization causes missed notifications and delayed delivery of critical messages
| - High Cost & Subscription Model
- Login & Onboarding Failures
- Feature Parity (Android vs iOS)
| |
| Requests | - One-click unsubscribe button for newsletters to improve inbox management efficiency for all users
| - Option to revert to classic interface without AI-driven navigation changes
| - Improved dark mode visual contrast to ensure inbox readability and easier navigation for users
| - | - Granular notification controls for specific in-class activities to reduce unnecessary mobile interruptions
| - | - Granular notification controls allow users to filter alerts by specific senders or categories
| - | - |
| Strategic Intel |
| Strengths | - Unified inbox architecture increases switching costs
- AI-powered triage reduces cognitive load for power users
- Cross-platform consistency supports professional workflows
| - Deep Microsoft 365 ecosystem integration [Platform]
- Unified calendar-email workflow [Feature]
| - Automated commercial email parsing creates high-utility daily notification loops
- Privacy-first architecture with native spy-pixel blocking increases user switching costs
- Unified inbox design centralizes multi-account workflows
| - Strong brand equity built on trust and Swiss privacy laws.
- Robust, integrated ecosystem (VPN, Drive, Calendar, etc.).
- Open-source transparency builds credibility.
| - Workspace integration creates high switching costs for enterprise users
- 99.9% spam-blocking efficacy sustains enterprise-grade security authority
| - | - PGP encryption provides a distinct security moat
- Unified inbox reduces switching costs for multi-account users
| - Best-in-class keyboard-centric UI/UX
- Advanced AI workflow integration
- Unique team collaboration features (shared views/comments)
| - Strong AI integration
- Innovative 'Bundles' UI
- High user satisfaction with core AI
|
| Weaknesses | - Aggressive paywalling of spam blocking drives churn
- Notification and sync stability regressions
- Lack of conversation-view customization
| - Frequent post-update sync failures [Metric]
- Search functionality failing to index recent content [Metric]
| - Persistent authentication loops for Microsoft accounts drive negative sentiment
- Search functionality regressions prevent access to historical data
- High premium subscription price point relative to category utility
| - Persistent mobile sync and performance bugs.
- Inaccessible customer support for paid users.
- UI/UX inconsistencies on mobile platforms.
| - Stability regressions in the latest build cause frequent crashes
- Aggressive sponsored content insertion degrades core user experience
| - | - Unreliable sync causes missed notifications
- Subscription pricing discrepancies create user distrust
- AI tab is perceived as clutter
| - Significant feature gaps on Android (AI/Calendar)
- High subscription cost
- Technical friction in onboarding and login
| - Missing basic formatting
- 90-day history limit
- Poor tablet optimization
|
| Pricing | freemium | freemium | freemium | freemium | freemium | subscription | freemium | subscription | freemium |
| Momentum | Steady | Active | Active | - | Intense | Intense | Intense | - | - |
| Update Cadence | 3 versions, ~15d avg | 5 versions, 3 majors/6mo, ~9d avg | 5 versions, ~7d avg | - | 5 versions, 1 majors/6mo, ~7d avg | 5 versions | 5 versions | - | - |
