# Mozilla Thunderbird vs Superhuman

**Leader by Vioscale score:** Superhuman

| Attribute | Mozilla Thunderbird | Superhuman |
|---|---|---|
| **Vioscale score** | 60.1 (27% (low)) | 72.1 (61% (medium)) |
| activity.commits_last_30d | 100 | - |
| adoption.dependent_repos | 0 | - |
| adoption.github_stars | 13,921 | - |
| deployment.options | - | `{"cloud":true}` |
| description.long | 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. | 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. |
| features.capabilities | `{"pricing_model":"free_open_source","deployment_model":"local_direct_imap_client","generative_ai_llm_email_drafting":false,"unified_multi_account_inbox_view":true,"universal_imap_smtp_exchange_support":true}` | - |
| integrations.count | - | 800 |
| integrations.list | - | `[{"name":"Asana"},{"name":"Ashby"},{"name":"ClickUp"},{"name":"Commerce Layer"},{"name":"DeepL"},{"name":"Demio"},{"name":"Figma"},{"name":"GitHub"},{"name":"Gong"},{"name":"Google Analytics"},{"name":"Google Calendar"},{"name":"Google Meet"},{"name":"Google Translate"},{"name":"Google Workspace Directory"},{"name":"HeyGen"},{"name":"HubSpot"},{"name":"Jira"},{"name":"Mermaid"},{"name":"Miro"},{"name":"Microsoft Outlook"},{"name":"Microsoft Teams"},{"name":"Outreach"},{"name":"Pipedrive"},{"name":"Salesforce"},{"name":"Slack"},{"name":"Typeform"},{"name":"Unsplash"},{"name":"UPS"},{"name":"Zapier"},{"name":"Zoom"}]` |
| language.primary | Kotlin | - |
| license.spdx | Apache-2.0 | - |
| market.availability | - | `{"primaryMarkets":["GB","US"],"availabilityScope":"global","availableCountries":[],"notAvailableCountries":[]}` |
| platform.support | `{"mac":true,"linux":true,"windows":true}` | `{"ios":true,"mac":true,"web":true,"android":true}` |
| pricing | `{"type":"free","summary":"Free, open-source. Free forever.","freeTier":true,"sourceUrl":"https://www.thunderbird.net","retrievedAt":"2026-08-21T12:42:28.376Z"}` | `{"type":"subscription","plans":[{"free":true,"name":"Free","summary":"Free","features":["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"],"components":[{"kind":"fixed","amount":0,"period":"month","currency":"GBP"}],"contactSales":false},{"free":false,"name":"Pro","summary":"£10/member/month (annual) or £12/member/month (monthly)","features":["Unlimited paragraph rewrites and translations (15+ languages)","AI-generated text detection and plagiarism checking","Brand voice consistency enforcement"],"components":[{"kind":"per_unit","unit":"member","amount":10,"period":"month","currency":"GBP"}],"contactSales":false},{"free":false,"name":"Business","summary":"£28–£33/member/month (exact amount depends on billing frequency)","features":["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"],"contactSales":false},{"free":false,"name":"Enterprise","summary":"Custom pricing. Contact sales for details.","features":["Team analytics and reporting","Advanced security and admin controls","SAML single sign-on","Custom roles and permissions","Data loss prevention","Bring-your-own-key encryption","Dedicated support team"],"contactSales":true}],"summary":"From £10/member/month. Free tier available.","currency":"GBP","freeTier":true,"sourceUrl":"https://superhuman.com/plans","retrievedAt":"2026-08-19T09:03:52.135Z","startingPrice":{"unit":"member","amount":10,"period":"month","currency":"GBP"},"billingPeriods":["month","year"]}` |
| pricing.free_tier | yes | yes |
| pricing.model | freemium | freemium |
| pricing.price_level | free | low |
| pricing.starting_price | - | `{"amount":10,"currency":"GBP"}` |
| pricing.transparent | yes | yes |
| release.history | `[{"url":"https://github.com/thunderbird/thunderbird-android/releases/tag/THUNDERBIRD_22_0","date":"2026-08-11T03:59:18Z","type":"stable","version":"THUNDERBIRD_22_0"},{"url":"https://github.com/thunderbird/thunderbird-android/releases/tag/K9MAIL_22_0","date":"2026-08-11T03:59:18Z","type":"stable","version":"K9MAIL_22_0"},{"url":"https://github.com/thunderbird/thunderbird-android/releases/tag/THUNDERBIRD_23_0b1","date":"2026-08-10T22:13:14Z","type":"prerelease","version":"THUNDERBIRD_23_0b1"},{"url":"https://github.com/thunderbird/thunderbird-android/releases/tag/THUNDERBIRD_21_1","date":"2026-08-03T19:14:04Z","type":"stable","version":"THUNDERBIRD_21_1"},{"url":"https://github.com/thunderbird/thunderbird-android/releases/tag/K9MAIL_21_1","date":"2026-08-03T19:14:10Z","type":"stable","version":"K9MAIL_21_1"},{"url":"https://github.com/thunderbird/thunderbird-android/releases/tag/THUNDERBIRD_22_0b2","date":"2026-07-27T20:45:48Z","type":"prerelease","version":"THUNDERBIRD_22_0b2"},{"url":"https://github.com/thunderbird/thunderbird-android/releases/tag/THUNDERBIRD_21_0","date":"2026-07-20T21:30:00Z","type":"stable","version":"THUNDERBIRD_21_0"},{"url":"https://github.com/thunderbird/thunderbird-android/releases/tag/K9MAIL_21_0","date":"2026-07-20T21:29:55Z","type":"stable","version":"K9MAIL_21_0"},{"url":"https://github.com/thunderbird/thunderbird-android/releases/tag/THUNDERBIRD_22_0b1","date":"2026-07-20T23:20:30Z","type":"prerelease","version":"THUNDERBIRD_22_0b1"},{"url":"https://github.com/thunderbird/thunderbird-android/releases/tag/THUNDERBIRD_20_1","date":"2026-07-06T22:30:54Z","type":"stable","version":"THUNDERBIRD_20_1"},{"url":"https://github.com/thunderbird/thunderbird-android/releases/tag/K9MAIL_20_1","date":"2026-07-06T22:30:53Z","type":"stable","version":"K9MAIL_20_1"},{"url":"https://github.com/thunderbird/thunderbird-android/releases/tag/THUNDERBIRD_21_0b2","date":"2026-06-29T21:12:45Z","type":"prerelease","version":"THUNDERBIRD_21_0b2"},{"url":"https://github.com/thunderbird/thunderbird-android/releases/tag/K9MAIL_20_0","date":"2026-06-23T01:45:10Z","type":"stable","version":"K9MAIL_20_0"},{"url":"https://github.com/thunderbird/thunderbird-android/releases/tag/THUNDERBIRD_20_0","date":"2026-06-23T01:45:03Z","type":"stable","version":"THUNDERBIRD_20_0"},{"url":"https://github.com/thunderbird/thunderbird-android/releases/tag/THUNDERBIRD_21_0b1","date":"2026-06-22T17:24:23Z","type":"prerelease","version":"THUNDERBIRD_21_0b1"},{"url":"https://github.com/thunderbird/thunderbird-android/releases/tag/THUNDERBIRD_19_2","date":"2026-06-04T19:32:37Z","type":"stable","version":"THUNDERBIRD_19_2"},{"url":"https://github.com/thunderbird/thunderbird-android/releases/tag/K9MAIL_19_2","date":"2026-06-04T19:32:32Z","type":"stable","version":"K9MAIL_19_2"},{"url":"https://github.com/thunderbird/thunderbird-android/releases/tag/THUNDERBIRD_20_0b2","date":"2026-06-04T18:27:10Z","type":"prerelease","version":"THUNDERBIRD_20_0b2"},{"url":"https://github.com/thunderbird/thunderbird-android/releases/tag/THUNDERBIRD_19_1","date":"2026-06-03T22:11:56Z","type":"stable","version":"THUNDERBIRD_19_1"},{"url":"https://github.com/thunderbird/thunderbird-android/releases/tag/K9MAIL_19_1","date":"2026-06-03T22:11:55Z","type":"stable","version":"K9MAIL_19_1"}]` | - |
| reliability.status_page | - | yes |
| security.hipaa | - | yes |
| security.scorecard | 7.2 | - |
| security.soc2 | - | yes |
| security.vulnerabilities | `{"count":0,"source":"https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=fdroid&package_name=com.fsck.k9&per_page=100","last_12m":0,"max_severity":null}` | - |

## Capabilities (Email Clients)

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

*Source: Vioscale. Generated 2026-09-01T17:12:53.146Z. "-" = undocumented, not absent.*