MCP servers and skills: search, filter by where they run, and compare.
Tested Python CLI for email deliverability: grade SPF/DKIM/DMARC/BIMI/MTA-STS, score spam risk, gate sends with a pre-send QA check, diagnose headers, classify bounces, check blocklists, plan warmup.
SkillMIT★ 1Few starsNo key
MCP server for the Inxmail Commerce transactional API — events, sendings, bounces, blocklist, blacklist, reactions, and delivery tracking from Claude.
Node.jsMIT★ 4Few starsNo key
MCP server that checks email deliverability: SPF, DKIM, DMARC, blocklists and Gmail/Yahoo sender requirements.
Hosted by authorMITFew starsNo key
Check domains for email blacklists (Spamhaus, URIBL, SURBL, ZEN, SpamCop, Barracuda) + missing SPF/DKIM/DMARC. Pure DNS, zero deps, no API keys. Ships as a Claude Code skill + standalone CLI.
SkillMIT★ 8No key
Claude Code skill: diagnose why your email fails (SPF, DKIM, DMARC, MX, Spamhaus) and unify sending across Brevo, Resend and SMTP.
SkillMIT★ 1Few starsNo key
MCP server for SpamTitan email security — manage quarantine, allowlists, blocklists, and view email stats
DockerApache-2.0Few starsNeeds a key
Detect disposable and throwaway email addresses — 57,402+ domains tracked daily via the EmailKind API
SkillMIT★ 1Few starsNo key
MCP server for managing your addy.io email aliases from Claude and other MCP clients
PythonMITFew starsNeeds a key
Email Verifier MCP — verify email addresses at zero per-lookup cost: RFC 5321 syntax, MX records, a 182,000-domain disposable blacklist and role-account detection, all from free DNS. SMTP handshake is
Hosted by authorMITFew starsNo key
Free, read-only email and DNS checks: SPF, DKIM, DMARC, MX, DNS records, blocklists, domain health.
Hosted by authorNo licenseFew starsNo key
Verify emails (syntax, MX, SMTP mailbox, catch-all), test email DNS and check Spamhaus blocklists.
Hosted by authorNo licenseFew starsNo key
MCP server for Sonarr: full TV series management - add, edit, delete, calendar, queue, quality profiles, and episode tracking
SkillMITFew starsNo key
Why isn't Postfix delivering? Queue, qshape, mail log and SPF/DKIM/DMARC/PTR diagnosis as a CLI and read-only MCP server.
GoMITFew starsNo key
Scan and fix a domain's email deliverability (SPF, DKIM, DMARC, MTA-STS, BIMI, DNS blocklists).
Hosted by authorNo licenseFew starsNo key
Governed email for AI agents over MCP — sandbox inboxes, server-side policy gate, tamper-evident audit. Registry: com.mailbuttons/mcp-server
Node.jsMIT★ 1Few starsNeeds a key
Automated daily job search pipeline — aggregates company tracking, sends styled HTML email digests, tailors resumes with Gemini AI, drafts LinkedIn outreach messages, and scans remote job APIs for giv
SkillMIT★ 10No key
Open-source skill.md files that give AI agents deep email expertise like deliverability, authentication, bounce handling, sending best practices, compliance, and more.
SkillMIT★ 7No key
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