| # | Entity | Score |
|---|---|---|
| 1 | Superhuman | 67.7 |
| 2 | Outlook | 42.6 |
| 3 | Spark | 38.1 |
| 4 | Gmail | 23.2 |
| 5 | ProtonMail | 22.9 |
| 6 | Thunderbird | 18.2 |
| 7 | Shortwave | 16.7 |
| 8 | Apple Mail | 14.6 |
| 9 | Mailbird | 12.0 |
| 10 | flat-front chino shorts | 12.0 |
#1Microsoft Outlook (New Outlook + classic Outlook)#2Gmail (web) + Google Workspace add-ons#3Superhuman (Gmail/Google Workspace + Microsoft 365)#4Spark (Readdle)#5Thunderbird (modern Thunderbird builds)
#1Superhuman#2Microsoft Outlook (w/ Copilot Pro)#3Gmail (Google Workspace w/ Gemini Advanced)#4Spark#5Shortwave (Google-backed)#6Apple Mail (w/ Apple Intelligence)#7Thunderbird (Mozilla)
#1Microsoft Outlook#2Spark#3Superhuman#4Newton Mail#5Gmail (with Add-ons)#6Postbox#7eM Client#8Zoho Mail#9Mailbird#10Fastmail
#1Microsoft Outlook#2Gmail#3Superhuman#4Thunderbird#5Apple Mail + Continuity#6Spark (Readdle)#7Proton Mail + Bridge#8Tutanota#9Spike#10Front#11eM Client#12Mailspring#13Hey#14Mailbird
#1Supermail AI#2Spark (2026 update)#3Outlook 365 – “Focused Productivity” edition#4Hey (Superhuman-style)#5Mailspring Pro (new 2026 release)#6Proton Mail – “Productivity Suite”#7EvoMail#8Thunderbird + “Productivity Plus” Add-on#9Zoho Mail – “Zen Mode”#10Apple Mail (iOS 18/macOS 14) – “Intelligent Inbox”