"Techniques for Multi-Model Integration" matching MCP servers:

Enables Claude to read, search, send, draft, and organize email across multiple independently authenticated Gmail accounts through one local MCP connection. It supports account aliases, per-account default From addresses, dry-run sends, and draft-only replies for safer multi-account email management.

Enables AI assistants to manage multiple Gmail accounts in a single process through the Model Context Protocol, including cross-account search, reading threads, drafts, sending, labels, and attachments with per-account permission tiers.

Enables an AI client to search Gmail, Outlook, Hotmail, iCloud and Fastmail mailboxes at once and read, draft, send and organise mail in each. It also supports attachments, labels, filters, signatures and vacation responders, with per-mailbox permissions controlling what may be sent.

Unifies CRM and productivity tool APIs behind a single interface, letting AI agents and developers create, update, delete, and list records across Zoho, HubSpot, Odoo, Google Sheets, Gmail, and Google Calendar without handling platform-specific schemas.

Gives MCP clients access to Google Workspace (Gmail, Drive, Calendar, Sheets, Docs, etc.) across multiple Google accounts simultaneously.

Connects any number of Gmail accounts to Claude or another MCP client, enabling search, reading, sending, drafting, labeling, and trashing mail across one account or all of them at once. Runs entirely locally, so OAuth tokens never leave the user's machine.

A self-hosted MCP server that gives an AI client read, search, triage, drafting, attachment/export and label-management access to several Gmail or Google Workspace accounts at once, with each call naming an explicit account. Sending is disabled unless armed twice, mail deletion is impossible, and tokens, exports and audit data stay local.

Enables creating editable MathType 7 equations in Microsoft Word and PowerPoint with native numbering and cross-references.

Enables an MCP client to read, draft, organize, send, and delete email across multiple Gmail and Exchange Online/Outlook.com accounts, with per-account capability policies, recipient allowlists, confirmations, minimum OAuth scopes, and local audit logging.

A native Nextcloud app that exposes the instance as an MCP server so Claude and other MCP clients can read, search, and (with admin-granted permissions) edit files, notes, calendars, Deck cards, and Talk conversations. It runs inside Nextcloud with OAuth or app-password sign-in, applying each user's own Nextcloud permissions and admin-controlled per-operation grants.

Enables Claude to search, download, upload, trash, rename, move, and share Google Drive files across multiple independently authenticated Google accounts through one local stdio connection, with scoped access and confirmation safeguards.

Enables AI agents to interact with tasks, spaces, lists, and folders across multiple ClickUp workspaces via the Model Context Protocol.

Enables Claude Desktop to interact with multiple Gmail accounts via MCP, providing tools for sending, searching, reading, labeling, filtering, thread management, drafts, and attachments. It also ensures correct thread replies and recoverable deletes.

Enables Claude to access and manage multiple Google accounts at once across Gmail, Calendar, Drive, Contacts, and Tasks, with unified search and document text extraction.

Enables Claude to read and manage Google Calendar across several independently authenticated Google accounts through one local connection, with dry-run previews for all writes.

A single MCP server that lets users interact with multiple Jira Cloud sites at once, routing requests by issue-key prefix and supporting attachment download/upload to disk.

Connects any number of Notion workspaces through a single MCP server, exposing four tools for connecting, listing, searching, and fetching Notion content. Ensures constant tool surface regardless of workspace count, with OAuth-based security.

Enables an assistant to search and read mail across multiple Gmail accounts, create drafts in the correct account and thread, apply labels, archive or mark read reversibly, and view events from every calendar in read-only mode. Sending and deleting are deliberately not exposed, so all outgoing mail is reviewed and sent by the user.

Enables AI-powered project management by connecting Claude to Planka kanban boards via 75+ MCP tools for creating, updating, and managing projects, boards, lists, and cards.

Enables AI agents to manage citations in Microsoft Word via EndNote, including DOI-verified paper search, RIS import/export, and genuine CWYW IEEE citations.