vioscale
Comparison

Mozilla Thunderbird 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.

Mozilla Thunderbird full profile →Superhuman full profile →
Machine formatsJSONMarkdownGraphQLor send Accept: application/json
Mozilla Thunderbird60
★Superhuman72
Score
Vioscale score
Mozilla Thunderbird60 / 100low · 27%
Superhuman72 / 100medium · 61%
Pricing
Free tier
Mozilla Thunderbird✓
Superhuman✓
Model
Mozilla Thunderbirdfreemium
Superhumanfreemium
Price level
Mozilla Thunderbirdfree
Superhumanlow
Starting price
Mozilla Thunderbird–
Superhuman£10
Transparent
Mozilla Thunderbird✓
Superhuman✓
Integrations
Count
Mozilla Thunderbird–
Superhuman800
Security
Hipaa
Mozilla Thunderbird–
Superhuman✓
Scorecard
Mozilla Thunderbird7.2
Superhuman–
Soc2
Mozilla Thunderbird–
Superhuman✓
Vulnerabilities
Reliability
Status page
Mozilla Thunderbird–
Superhuman✓
Adoption
Dependent repos
Mozilla Thunderbird0
Superhuman–
Github stars
Mozilla Thunderbird13,921
Superhuman–
Activity
Commits last 30d
Mozilla Thunderbird100
Superhuman–
Release
History
Mozilla Thunderbird20 items
Superhuman–
License
Spdx
Mozilla ThunderbirdApache-2.0
Superhuman–
Language
Primary
Mozilla ThunderbirdKotlin
Superhuman–
Market
Availability
Mozilla Thunderbird–
SuperhumanAvailable worldwide · Popular in GB, US

Capabilities

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

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

What each one is

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

Mozilla Thunderbird

Thunderbird consolidates email, calendars, and contacts from multiple accounts into one interface. It runs on Windows, Mac, and Linux, is funded by user donations, and prioritizes privacy by never collecting personal data or serving advertisements.

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.

Mozilla Thunderbird

FreeFree tier

Free, open-source. Free forever.

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
Mozilla Thunderbird✗
Superhuman✓
iOS
Mozilla Thunderbird✗
Superhuman✓
Android
Mozilla Thunderbird✗
Superhuman✓
macOS
Mozilla Thunderbird✓
Superhuman✓
Windows
Mozilla Thunderbird✓
Superhuman✗
Linux
Mozilla Thunderbird✓
Superhuman✗
Deployment
Cloud / SaaS
Mozilla Thunderbird–
Superhuman✓

Integrations

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

Mozilla Thunderbird

Not documented yet.

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.