SocketLabs Email Delivery Node.js client library

Gmail Postmaster Tools (v2 API) as an MCP server — domains, traffic metrics & sender compliance in Claude, Cursor, and any MCP client. Bring your own Google OAuth. Zero dependencies.

Outlook.com SNDS (Smart Network Data Services) as an MCP server — OAuth sign-in, IP Data & IP Status reports in Claude, Cursor, and any MCP client. Zero dependencies.

A simple dkim dns validator for nodejs

Optimize your email deliverability with comprehensive Time to Inbox (TTI) metrics. Monitor delivery speed, track inbox placement, and improve email performance.

turboSMTP official API

Standalone Node.js CLI tool that validates email addresses across all major email providers using SMTP verification. Checks whether mailboxes actually exist before you send — no API keys, no dependencies to install, just Node.js. Built for campaign lead verification to eliminate email bounces before sending.

Audit a domain's email deliverability: MX, SPF (recursive lookup count), DKIM, DMARC, MTA-STS, BIMI. Scored, with fixes. Zero deps, zero AI.

One HTTP API over mailward + dnsward: a domain's email auth + DNS health with an overall grade. Cache, rate limit, Docker. Zero third-party deps, zero AI.

A standalone Node.js CLI tool that validates Gmail addresses to determine if they are real and deliverable. Built for campaign lead verification to eliminate email bounces before sending.

Official MCP server for MailX email deliverability tools — SPF, DKIM, DMARC, BIMI, blacklists, SMTP/IMAP, DNS.

Validate email addresses, check deliverability, and verify email authentication records

MCP server for email deliverability testing across 9 providers. Test inbox placement (Inbox vs Spam vs Promotions) with SPF/DKIM/DMARC verification. Works with Claude Desktop, Cursor, Windsurf.