Overview

The MailAgent Gmail Addon brings AI-powered email assistance directly into your Gmail inbox as a sidebar. No context switching, no copy-pasting — just open an email and let the AI help.

What It Does

When installed, the addon adds a sidebar panel to Gmail with the following capabilities:

• AI Agent — Toggle an autonomous AI that monitors your inbox and responds to emails automatically.

• Draft Mode — Choose whether the AI sends emails directly or creates drafts for your review.

• Custom Prompt — Define the AI's personality, tone, and behavior with a system prompt.

• Email Labels — Automatically classify and label processed emails.

• Email Signature — Append a custom footer to all AI-generated emails.

• Integrations — Connect MCP servers and GitBook knowledge bases for context-aware responses.

• Process Email — Manually trigger the AI to respond to the currently open email.

• Quick Replies — Get AI-suggested reply options when viewing an email.

• Reports — View email processing statistics.

• User ID — Your unique identifier, displayed at the bottom of the settings panel. You'll need this to integrate the widget.

How It Works

┌─────────────────────────────────────────────┐
│  Gmail Inbox                                │
│  ┌────────────────────┐  ┌────────────────┐ │
│  │                    │  │  MailAgent      │ │
│  │   Email Thread     │  │  Sidebar       │ │
│  │                    │  │                │ │
│  │                    │  │  [AI Agent: ON] │ │
│  │                    │  │  Draft Mode     │ │
│  │                    │  │  Integrations   │ │
│  │                    │  │  Prompt         │ │
│  │                    │  │  Labels         │ │
│  │                    │  │  Signature      │ │
│  │                    │  │                │ │
│  └────────────────────┘  └────────────────┘ │
└─────────────────────────────────────────────┘

1. Automatic Mode — When the AI Agent is enabled, MailAgent watches for new unread emails via Gmail push notifications. For each new email, it reads the thread, generates a response using your configured prompt and integrations, and either sends the reply or creates a draft.

2. Manual Mode — When the AI Agent is disabled, you can still open any email and click "Process Email" to generate a response on demand. The addon will show the email's intent, quick reply suggestions, and a custom prompt field for generating replies.

Subscription Plans

Plan	Daily Email Limit	Features
Starter	10 emails/day	All core features
Standard	50 emails/day	All core features
Pro	Unlimited	All core features

Your daily usage counter resets automatically every 24 hours.