vioscale
Comparison

Mailspring vs Superhuman

On the evidence we track, Superhuman leads this comparison with a composite score of 72/100. Scores are only directly comparable because these tools share a category; the full breakdown and every source is below.

Mailspring full profile →Superhuman full profile →
Machine formatsJSONMarkdownGraphQLor send Accept: application/json
Mailspring66
★Superhuman72
Score
Vioscale score
Mailspring66 / 100low · 29%
Superhuman72 / 100medium · 61%
Pricing
Free tier
Mailspring✓
Superhuman✓
Model
Mailspringcommercial
Superhumanfreemium
Price level
Mailspringlow
Superhumanlow
Starting price
Mailspring$8
Superhuman£10
Transparent
Mailspring✓
Superhuman✓
Integrations
Count
Mailspring7
Superhuman800
Security
Hipaa
Mailspring–
Superhuman✓
Soc2
Mailspring–
Superhuman✓
Reliability
Status page
Mailspring–
Superhuman✓
Adoption
Github stars
Mailspring17,762
Superhuman–
Activity
Commits last 30d
Mailspring38
Superhuman–
Release
Cadence days
Mailspring15
Superhuman–
History
Mailspring20 items
Superhuman–
License
Spdx
MailspringGPL-3.0
Superhuman–
Language
Primary
MailspringJavaScript
Superhuman–
Market
Availability

Capabilities

Feature-by-feature on the axes that matter for email clients. “-” means undocumented, not absent.

Capabilities
Deployment model
MailspringLocal direct imap client
Superhuman-
Universal imap smtp exchange support
Mailspring✓
Superhuman-
Keyboard shortcut only navigation speed
Mailspring-
Superhuman-
Split inbox AI auto categorization
Mailspring-
Superhuman-
Read receipts and open tracking
Mailspring✓
Superhuman-
Snooze and scheduled send later
Mailspring✓
Superhuman-
Generative AI LLM email drafting
Mailspring-
Superhuman-
Conversational chat layout view
Mailspring-
Superhuman-
Unified multi account inbox view
Mailspring✓
Superhuman-
Pgp end to end encryption support
Mailspring-
Superhuman-
SOC2 type ii
Mailspring-
Superhuman-
ISO 27001
Mailspring-
Superhuman-
Pricing model
MailspringFreemium
Superhuman-

What each one is

The product in its own terms, so the numbers below have context.

Mailspring

A lightweight desktop application for Mac, Windows, and Linux that brings together multiple email accounts from different providers into one unified inbox. Core features run locally on your computer, with optional paid features for message tracking, scheduling, and productivity analytics.

Independently observed

Superhuman

Leader

Superhuman combines email management, collaborative documentation, and AI-powered contextual assistance into a unified platform. It helps teams and individuals handle communications, planning, and document workflows more efficiently by bringing AI capabilities directly into the apps they already use.

Independently observed

Pricing

List pricing as published by each vendor, with the date we read it. Always verify at the source before you buy.

Mailspring

from $8/mofreemiumFree tier

Free tier available; Pro at $8/month

  • FreeFree
    • Multi-account support
    • Unified inbox
    • Snooze
    • Send later
    • Mail rules
    • +4 more
  • Pro$8/month
    • Read receipts
    • Link tracking
    • Unlimited snooze and send later
    • Mailbox analytics
    • Contact and company profiles
as of verify ↗

Superhuman

Leader
from £10/member/moSubscriptionFree tier

From £10/member/month. Free tier available.

  • FreeFree
    • Chat with AI in all applications and tabs
    • Writing assistance in 20+ languages
    • Tone and voice adaptation
    • Collaborative docs with tables, charts, Kanban boards, forms
    • Doc automation with formulas
  • Pro£10/member/month (annual) or £12/member/month (monthly)
    • Unlimited paragraph rewrites and translations (15+ languages)
    • AI-generated text detection and plagiarism checking
    • Brand voice consistency enforcement
  • Business£28–£33/member/month (exact amount depends on billing frequency)
    • AI-powered inbox organization and smart replies
    • Personalized email drafts
    • CRM integrations (HubSpot, Salesforce, Pipedrive read-only)
    • Unlimited doc automations and version history
    • Data sync from Jira, GitHub, Figma into docs
  • EnterpriseContact sales
    • Team analytics and reporting
    • Advanced security and admin controls
    • SAML single sign-on
    • Custom roles and permissions
    • Data loss prevention
    • +2 more
as of verify ↗

Platform & deployment

Where each product runs and how it can be hosted. A dash means undocumented, not unsupported.

Platforms
Web
Mailspring✗
Superhuman✓
iOS
Mailspring✗
Superhuman✓
Android
Mailspring✗
Superhuman✓
macOS
Mailspring✓
Superhuman✓
Windows
Mailspring✓
Superhuman✗
Linux
Mailspring✓
Superhuman✗
Deployment
Cloud / SaaS
Mailspring–
Superhuman✓

Integrations

What each product connects to. Counts come from the vendor's own integration directory where one exists.

Mailspring

8 total
  • Gmail
  • iCloud
  • Office 365
  • FastMail
  • Outlook.com
  • Yahoo!
  • IMAP
  • SMTP
Independently observed

Superhuman

Leader
30 total
  • Asana
  • Ashby
  • ClickUp
  • Commerce Layer
  • DeepL
  • Demio
  • Figma
  • GitHub
  • Gong
  • Google Analytics
  • Google Calendar
  • Google Meet
  • Google Translate
  • Google Workspace Directory
  • HeyGen
  • HubSpot
  • Jira
  • Mermaid
  • Miro
  • Microsoft Outlook
  • Microsoft Teams
  • Outreach
  • Pipedrive
  • Salesforce
  • +6 more
Independently observed

Comparison generated from independently-sourced facts. Every value links to its source and retrieval date. See the method.