Knowbo vs TabMail

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

Knowbo compared with TabMail
Detail	Knowbo	TabMail
What it does	Create a custom chatbot from your website in 2 minutes	Agentic AI email assistant with zero data retention for iOS and Thunderbird
Stage	Not given	Not given
Founded	Not given	Not given
Based in	Not given	CA
Pricing model	Freemium	Freemium
Pricing	Starter: $19/month (1 Chatbot, 100 Customer Messages/Day, 50 Source URLs). Expert: $39/month (5 Chatbots, Unlimited Messages, 500 Source URLs). Ultimate: $79/month (10 Chatbots, Unlimited Messages, 2000 Source URLs).	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
Key features	Automatic knowledge base updates from website changes No additional training required Chat history tracking Easy one-click deployment Full brand customization Multi-language support Multiple website platform compatibility Selective URL training Custom instructions Auto URL discovery and updates	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
What makes it different	Learn from your website in 2 minutes with no coding required Automatically stays up-to-date as your website changes Works on all website platforms without developer skills 7-day free trial on all plans with no payment required Handles complex questions using your company-specific terminology	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
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)	4 +1 (up) since last check	3 no change since last check
Trust Flow (Majestic)	5	1
Citation Flow (Majestic)	18	19
Referring domains (Majestic)	204	42

5 details filled in for both companies.

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