Best Alternatives to Email Verifier

Emailmd

Runtime: npx

Convert markdown to email-safe HTML with linting and live preview via an MCP server or local CLI.

Slack MCP Server

Runtime: Remote (SSE)

MCP server providing Slack workspace data access with message history, threads, DMs, user info, and optional message posting.

Line Bot MCP Server

Runtime: npx

Verified

Connects an AI agent to LINE Messaging API for messaging, user profiles, quotas, followers, and rich-menu management.

Leximo AI Call Assistant MCP Server

Runtime: npx

Schedule AI phone calls, manage Leximo assignments, inspect transcripts, and monitor credits through MCP.

Google Workspace

Runtime: npx

Give AI agents access to Gmail, Calendar, Drive, and more — multi-account, manifest-driven

Email Spam Tester

Runtime: Remote (SSE)

Verified

Email deliverability testing for agents. Four tools: get a disposable test address, wait for the report once the message arrives, read it, and fetch the raw source. The report has 42 checks (SPF, DKIM, DMARC, 21 blocklists, two spam engines, Gmail and Yahoo bulk sender rules), each linked to its RFC, plus a fix plan. Remote endpoint, no API key.

ARBuilder

Runtime: npx

AI-powered MCP server generating Stylus smart contracts, cross-chain SDKs, full-stack dApps, and Orbit chain deployment tools for Arbitrum.

Email MCP

Runtime: npx

Connects AI assistants to IMAP and SMTP accounts for reading, composing, organizing, scheduling, and analyzing email.

MCP Telegram

Runtime: npx

Connects AI clients to a personal Telegram account for chat access, message search, media downloads, contacts, and account actions.

Outlook Assistant

Runtime: npx

MCP server enabling AI assistants to manage Outlook email, calendar, contacts, and mailbox settings via conversation.

Lumail

Runtime: npx

Official Lumail email marketing MCP for campaigns, subscribers, and workflows.

Telnyx

Runtime not confirmed

Official TypeScript library for the Telnyx API