"Systems or platforms that support dynamic registration" matching MCP servers:

Enables AI agents to analyze whether they should send an email, evaluating passive aggression and regret probability with a recommendation heavily weighted toward no.

Enables AI-driven customer support ticket processing, including classification, response generation, and automated email sending and Google Sheets logging.

Provides a local MCP server for inspecting offline .eml files without network access, exposing a single tool to generate redacted JSON summaries with nested-message and delivery-status details.

Local-first Microsoft Outlook MCP server: a single Go binary that manages calendar events and mail through the Microsoft Graph API over stdio, with tokens stored in the OS keychain and no Entra ID app registration required. Exposes four aggregate tools (calendar, mail, account, system) dispatched by an operation verb, with multi-account support and read-only and mail-gating modes.

Provides temporary email services for AI agents, enabling closed-loop verification of email-based registration flows with multi-provider support, auto-registration, and verification code extraction.

Controls the Microsoft Outlook desktop app via COM automation, enabling email, calendar, and contact management without needing Graph API or Azure registration.

Lets AI agents send email over SMTP and read, search, and manage email over IMAP or POP3 using app passwords or authorization codes, with attachment handling and support for common providers.

An MCP server for Gmail that allows AI assistants to read, search, compose drafts, send emails, and manage labels with attachment support.

Enables email and domain checks, including SPF lookup limits, DKIM keys, DMARC, DNS records, and registration expiry.

Enables AI agents to securely interact with the classic Outlook desktop client on Windows via COM, covering mail, calendar, contacts, tasks, categories, and rules. It enforces draft-first outbound email, send gating, and recipient domain allowlisting for restricted environments without Graph, OAuth, or Azure app registration.

An MCP server that provides Claude with access to your Gmail, featuring a full OAuth 2.1 authorization server with dynamic client registration and tools to list, read, search, send, reply, draft, archive, trash, manage labels, and download attachments.

MCP server for Microsoft Outlook that enables searching, sending, and managing mail and calendar via the OWA REST API using browser-session authentication, with no Azure AD app registration required.

Enables AI agents to create and use temporary email and SMS inboxes, check messages, and wait for or extract OTPs and verification links during account registration. Combines both channels through a unified OTP tool while redacting sensitive tokens in audit logs.

Enables AI assistants to manage Microsoft Outlook Desktop (Classic) calendar and email through local COM automation, without Microsoft Graph or Entra registration.

Provides email sending and receiving via SMTP/IMAP/POP3, supporting major email providers and dynamic authentication for AI assistant integration.

AI-powered email assistant that enables sending, parsing, and managing emails using natural language. Provides 4 tools (smart_email, parse_email_intent, send_email, email_chat) with SSE/stdio transport support.

Expense management and Gmail receipt capture for AI assistants and automation platforms.

An intelligent email orchestration system that connects local LLMs to an SMTP email sender using the Model Context Protocol, enabling dynamic tool discovery and execution via natural language.

Enables email management for a single mailbox via IMAP and SMTP protocols. Supports reading, searching, and sending emails with threading support through stdio or HTTP transports.

MCP server that enables AI agents to check if email addresses or domains are disposable using the isitdisposable.com API. It provides tools like check_email, check_domain, and check_batch for real-time validation.