TabMail vs DessaVoice

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

TabMail compared with DessaVoice
Detail	TabMail	DessaVoice
What it does	Agentic AI email assistant with zero data retention for iOS and Thunderbird	Independent hub for Block's Dessa voice AI with official recordings, hardware checks and live voice playground
Stage	Not given	Not given
Founded	Not given	Not given
Based in	CA	HK
Pricing model	Freemium	Freemium
Pricing	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	Free: official Dessa recordings breakdown, Mac M4 Max checker, and BYOK mode. Instant Voice Pass: $4.90 one-time for 150 credits (15 minutes). Pro Studio: $12.90/month for 1,200 credits (120 minutes).
Key features	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	Official Dessa audio recordings with two-track synchronized playback Mac M4 Max hardware readiness checker for local deployment Bring-your-own-key mode with OpenAI API integration Session audio and transcript download Real-time voice AI with 6-second credit metering Model comparison table for Dessa vs Sesame vs GPT-Live-1 vs Moshi Microphone preview mode for testing audio input Multiple conversation scenarios for voice practice
What makes it different	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	Independent platform with no affiliation to Block, Inc., providing free access to official Dessa recordings Only source showcasing Block's full-duplex Dessa model with official two-track demonstrations Free M4 Max hardware checker to estimate Dessa's local deployment compatibility Zero-text speech-to-speech architecture with no text intermediary
Free plan	Not given	Not given
Open source	Not given	Not given
Platforms	Not given	Not given
Public API	Not given	Not given
Community votes	0	0
DR (Domain Rating by Ahrefs)	3 no change since last check	2 +2 (up) since last check
Trust Flow (Majestic)	1	0
Citation Flow (Majestic)	19	0
Referring domains (Majestic)	42	0

6 details filled in for both companies.

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