Mailbox MCP vs Unibase

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

Mailbox MCP compared with Unibase
Detail	Mailbox MCP	Unibase
What it does	Connect Claude, ChatGPT or any AI to your email mailbox	One memory across all your AI
Stage	Established	Not given
Founded	2002	Not given
Based in	GB	Not given
Pricing model	Freemium	Free
Pricing	Free: 5 calls per mailbox per day, no card required. Pro: £34.99 per mailbox per year plus VAT (£2.92 monthly equivalent). Team Access: Team 3 at £119.99 per year plus VAT, Team 5 at £199.99 per year plus VAT, Team 10 at £399.99 per year plus VAT per account.	Not given
Key features	Read email without marking as read Read attachments: PDFs, spreadsheets, photos Reply in thread with proper headers Send as any of your email aliases Email routines on a schedule Permission levels per connection Works with Gmail, Outlook and IMAP	Works with ChatGPT, Claude, Gemini, Grok, Kimi, and DeepSeek Chrome extension for easy integration Private and encrypted Persistent memory layer for AI agents
What makes it different	Leaves mailbox completely untouched—no duplicate sent items, no marked-as-read flags, threading preserved Works with any MCP-compatible AI—not limited to Claude or ChatGPT Attachments never encoded—up to 20 MB, four ways to attach without passing through AI Email routines run automatically on schedule without manual prompts	Single memory across multiple AI systems Selective context sharing to any AI Open agent internet infrastructure
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)	26 +1 (up) since last check	41 −1 (down) since last check
Trust Flow (Majestic)	34	24
Citation Flow (Majestic)	32	37
Referring domains (Majestic)	61	419

4 details filled in for both companies.

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