"A server for testing APIs" matching MCP servers:

Enables AI assistants to manage multiple Outlook/Microsoft 365 mailboxes simultaneously through MCP tools, with local OAuth token storage.

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

Enables managing multiple Gmail accounts under one OAuth client, with per-account access levels, cross-account search, and read/write operations via stdio or Streamable HTTP.

A read-only MCP server that lets Claude Desktop interact with Apple Mail on macOS via AppleScript. It enables listing mailboxes, searching emails, and reading email content without making network calls.

Enables Gmail label management with tools to list, create, delete labels, and modify labels on messages and threads, handling OAuth2 authentication automatically.

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.

Giggal.ai is an email verification tool that runs a deep mailbox existence check on every address and verifies catch-all/accept-all and even SEG protected emails. Your bounce rate stays under 5%, and the 30% of every B2B list that other tools flag as "Risky" becomes deliverable again.

Enables sending and receiving email over generic IMAP and SMTP, with tools for searching, reading, drafting, attaching files, managing folders, and waiting for new messages.

A local MCP server that gives Claude read/write access to a personal Hotmail/Outlook.com mailbox via the Microsoft Graph API, exposing tools for listing, searching, sending, and drafting emails.

Enables AI agents to manage email mailboxes, send and receive emails, and handle webhooks via qmailing.

A read-only MCP server that connects to Proton Mail via Proton Bridge, enabling AI assistants to search, list, and read emails securely without leaving your machine.

MCP server for ThaiBulkSMS and ThaiBulkMail APIs, enabling SMS, email, credit check, and OTP operations through natural language.

Enables AI agents to verify email addresses, clean lists, run bulk verification jobs, and manage a Verifly account through natural language, without writing HTTP calls.

MCP server that gives an AI agent a throwaway test identity — a real disposable email address and a real UK phone number — so it can sign up for something it's testing and read back the verification email/SMS itself, without a human in the loop.

MCP server for Google APIs — Gmail and Calendar tools for LLM agents.

Enables MCP-compatible AI agents to create Gmail drafts, send Gmail email, and append text to Google Docs while keeping OAuth tokens inside the server.

Enables AI assistants to generate temporary email addresses, check inboxes, and read messages using the 1TempMail API.

MCP server for Xserver hosting that provides tools to manage mail accounts, DNS records, server information, and domain verification through natural language.

An MCP server for the PostStack email API that enables AI assistants to send transactional emails, manage contacts, handle inbound email threads, and perform deliverability checks through 84 curated tools.

Enables email address verification through a single MCP tool, returning whether an address is valid, invalid, or risky.