| What it does | Custom chat interface for comparing and using multiple AI models simultaneously with split-screen multitasking
| Agentic AI email assistant with zero data retention for iOS and Thunderbird
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| Stage | Not given
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| Founded | Not given
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| Based in | DE
| CA
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| Pricing model | Paid
| Freemium
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| Pricing | Lifetime License: €99 (reduced from €149), includes 5 device activations, lifetime updates, data persistence, cloud sync, cross-device synchronization, and self-hosting option. Additional device activations available through purchase of additional licenses.
| Free 2-week trial (eligible new accounts). TabMail Zero: brings your own API keys (OpenAI, Anthropic, Google). TabMail Basic: CAD $15.00 per month (includes TabMail Voice for macOS, agentic dictation, unlimited email autocompletion and AI agent requests, limited priority AI agent requests, good for
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| Key features | - Split-screen multitasking for comparing models side-by-side
- Background completions continue responses while you work on other chats
- Queue requests to send messages automatically after current response completes
- Fork conversations to explore different directions simultaneously
- File uploads and parsing including text documents and images
- Custom AI agents with specialized configurations and instructions
- Audio transcription using OpenAI's Whisper model in your browser
- Image analysis for vision-enabled models like GPT-4 and Claude 3
- Mermaid diagram visualization and rendering within chats
- PWA support for offline functionality and mobile app experience
| - Voice dictation with context awareness for composing and editing emails
- Suggested email replies with AI composition
- Email triage and inbox management
- AI-powered inbox assistant for research and answering questions
- Agentic mode with calendar, contacts, files, web search integration
- Support for Gmail, Outlook, iCloud, and IMAP accounts
- Zero data retention for email and calendar content
- On-device personalization data storage on iOS
- Toggleable AI features with privacy controls
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| What makes it different | - One-time lifetime purchase with no recurring monthly or yearly fees
- Full data privacy and control with your own API keys
- Self-hosting option for complete data ownership
- Available in 29 languages without losing advanced features
| - Zero data retention: email and calendar content processed transiently without server storage
- Open source: Thunderbird add-on and iOS app are publicly available on GitHub for transparency and contribution
- Works with existing inboxes: no vendor lock-in, integrates Gmail, Outlook, iCloud, and IMAP
- Agentic dictation understanding technical terms and acronyms through screen context
- Built on trusted open source: Mozilla Thunderbird foundation with modern ML capabilities
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| Free plan | Not given
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| Open source | Not given
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| Platforms | Not given
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| Public API | Not given
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| Community votes | 1 | 0 |
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| DR (Domain Rating by Ahrefs) | 31 ▲ +1 (up) since last check | 3 ● no change since last check |
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| Trust Flow (Majestic) | 17 | 1 |
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| Citation Flow (Majestic) | 38 | 19 |
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| Referring domains (Majestic) | 340 | 42 |
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MultitaskAI
TabMail