Best Alternatives to Pingvalid MCP

Byteplant MCP

Runtime: uvx

An MCP server that provides Email, Phone and Address Validation Services from Byteplant

Slack MCP Server

Runtime: Remote (SSE)

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

Lumail

Runtime: npx

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

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.

Emailmd

Runtime: npx

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

Google Workspace

Runtime: npx

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

Telnyx

Runtime not confirmed

Official TypeScript library for the Telnyx API

Atomic Mail

Runtime: npx

Programmable email inbox for AI agents — JMAP, PoW auth, stdio MCP server.

Signaliz

Runtime: npx

B2B email verification, company signal enrichment, and governed GTM data pipelines.

Validate UK addresses, postcodes, emails and phone numbers — Royal Mail PAF, live SMTP and HLR.

Domani

Runtime: npx

Domains + send/receive email + inbound webhooks + DNS for AI agents. One API, MCP, CLI.

Engagelab Email

Runtime: npx

Send, receive, monitor and reply to email from AI agents with threaded inbox context.