Mailbox MCP vs Rubii

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 Rubii
Detail	Mailbox MCP	Rubii
What it does	Connect Claude, ChatGPT or any AI to your email mailbox	Free AI character chat, roleplay and interactive stories
Stage	Established	Not given
Founded	2002	Not given
Based in	GB	Not given
Pricing model	Freemium	Freemium
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.	Free plan available. Plus: $7.99/month (800 Rubies, about 1,600 messages and 400 images). Pro: $14.99/month (3,000 Rubies, about 6,000 messages and 1,500 images). Premium: $29.99/month (6,600 Rubies, about 13,000 messages and 3,300 images).
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	Long character memory that persists across conversations Character creation with detailed settings Browse community-created characters Cross-platform access on web and mobile Memory editing and boost features with Rubii+
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	Long-form story-driven chat built for novel-length conversations, not one-line replies Persistent character memory that recalls details across weeks of chats Complete creator toolkit combining character design, image generation and video in one workflow Multiple AI model options for different writing styles Active community where creators can share and earn
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	39 +1 (up) since last check
Trust Flow (Majestic)	34	27
Citation Flow (Majestic)	32	32
Referring domains (Majestic)	61	293

5 details filled in for both companies.

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