# Edison Mail vs Mozilla Thunderbird

| Attribute | Edison Mail | Mozilla Thunderbird |
|---|---|---|
| **Vioscale score** | 42.3 (26% (low)) | 60.1 (27% (low)) |
| activity.commits_last_30d | - | 100 |
| adoption.dependent_repos | - | 0 |
| adoption.github_stars | - | 13,921 |
| deployment.options | `{"cloud":true}` | - |
| description.long | Edison Mail is a mobile and desktop email client that combines multiple email accounts from different providers into a single unified inbox, offering features like spam filtering, read-receipt blocking, AI-powered email categorization, and privacy-focused encryption. The free tier includes core functionality, while Edison Mail+ adds advanced anti-phishing protection and other security features. | 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. |
| 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 | 10 | - |
| integrations.list | `[{"name":"Gmail"},{"name":"Outlook"},{"name":"Yahoo"},{"name":"iCloud"},{"name":"Exchange"},{"name":"AOL"},{"name":"Hotmail"},{"name":"FastMail"},{"name":"OnMail"},{"name":"IMAP"}]` | - |
| language.primary | - | Kotlin |
| license.spdx | - | Apache-2.0 |
| market.availability | `{"primaryMarkets":[],"availabilityScope":"global","availableCountries":[],"notAvailableCountries":[]}` | - |
| platform.support | `{"ios":true,"mac":true,"android":true,"windows":true}` | `{"mac":true,"linux":true,"windows":true}` |
| pricing | `{"type":"hybrid","plans":[{"free":true,"name":"Edison Mail (Free)","summary":"Free","features":["Unified inbox for multiple email accounts","AI-based smart assistant for subscriptions, trips, packages, bills, entertainment","Spam filtering and one-tap unsubscribe","Read receipt blocker","Spy pixel blocking","Support for Gmail, Outlook, Yahoo, iCloud, Exchange, AOL, Hotmail, FastMail, IMAP, OnMail"],"components":[{"kind":"fixed","amount":0,"period":"month","currency":"USD"}],"description":"Multi-account unified inbox with AI assistant, spam blocking, and privacy features","contactSales":false},{"free":false,"name":"Edison Mail+","summary":"Premium subscription (pricing not specified)","features":["All free features","Anti-phishing protection","Priority support","Family & Friends plan (share with up to 5 others)"],"description":"Premium subscription with anti-phishing protection and priority support","contactSales":false}],"summary":"Free tier available; Edison Mail+ premium subscription (pricing details not disclosed)","currency":"USD","freeTier":true,"sourceUrl":"https://mail.edison.tech","retrievedAt":"2026-08-19T23:33:46.056Z"}` | `{"type":"free","summary":"Free, open-source. Free forever.","freeTier":true,"sourceUrl":"https://www.thunderbird.net","retrievedAt":"2026-08-21T12:42:28.376Z"}` |
| pricing.free_tier | yes | yes |
| pricing.model | freemium | freemium |
| pricing.price_level | low | free |
| pricing.transparent | no | 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"}]` |
| security.scorecard | - | 7.2 |
| 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 | Edison Mail | Mozilla Thunderbird |
|---|:--:|:--:|
| **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 2026-09-01T17:15:53.616Z. "-" = undocumented, not absent.*