"Firebase: Google's Backend-as-a-Service Platform" matching MCP servers:

MCP server that exposes an email verification tool, returning verdicts of valid, invalid, or risky with reasons.

A production-grade backend that lets LLMs safely operate Gmail, Google Drive, and Calendar through the Model Context Protocol.

Enables AI assistants to interact with Fastmail services, providing tools for comprehensive email management, contact searching, and calendar event coordination via the JMAP API. It supports advanced features like threaded conversations, attachment handling, and bulk mailbox operations through natural language.

Enables a conversational AI voice agent to handle airline customer-service tasks such as authenticating callers, retrieving booking details, listing alternative flights, rebooking, and sending confirmation emails.

Enables sending emails (including mass emailing), querying, updating, and canceling delayed emails via the Resend API.

Enables AI assistants to interact with Microsoft 365 and Office services through the Microsoft Graph API, providing tools for email, calendar, files, Teams, SharePoint, and more with configurable permissions and output formats.

Enables AI agents to send emails, create drafts in Gmail, and append content to Google Docs via standardized MCP tools.

MCP server for building safe AI agent email marketing workflows with Mailrith.

Enables Claude and other MCP clients to search, read, write and organise mail on Stalwart servers over JMAP — including folders, Sieve filters, out-of-office replies and one-click unsubscribe — with draft-first and confirmation safeguards against prompt injection. A separate admin endpoint additionally exposes account, domain, mailing-list, queue, IP, log and task management through Stalwart's JMAP management API.

A brain for your mail: MailFathom turns IMAP mailboxes into a self-hosted, AI-native service.

A Gmail MCP server that enables Claude to send, search, and read emails using either Gmail API or SMTP/IMAP backend.

Enables querying and retrieving email messages from an IMAP mailbox via MCP tools, with an indexed storage backend on Cloudflare.

Open-source, self-hosted Inbox-as-a-Service API for AI agents. It enables agents to manage email inboxes, send/receive emails, search messages, and wait for replies via REST or MCP.

Authenticated email service MCP for AI agents.

Enables Claude to read, search, send, label, and trash emails in any Gmail account via Google's Gmail API, using OAuth2 authentication with automatic token refresh.

Enables querying a structured CV and sending test emails via Ethereal through a backend API.

Enables MCP clients such as Claude to connect as a custom connector and read mail and calendar data from the doemefu homelab over a remote Streamable HTTP endpoint, authorized by OAuth tokens validated offline against the auth-service JWKS. Exposes read-only tools like list_accounts, with IMAP and CalDAV adapters planned.

Local MCP server providing Gmail tools (search, read, draft, send, trash) via Google's official API, integrated with GitHub Copilot CLI.

A mail service that connects private domain email to MCP clients, enabling sending (with auto signature), receiving, and reading emails through natural language via stdio or SSE transport.

A cross-platform MCP server that provides Claude with email access via IMAP, supporting multiple email providers and account management.