CAT
/MCP
SkillsMCPMarketplacesDigestToolsAdvertise

This week in Claude

Every Monday: Claude Code, Agent SDK, MCP, and the Anthropic platform moves worth your time.

Skills by Category
Frontend DevelopmentBackend & APIsTesting & QASecurityDevOps & CI/CDGit & Pull RequestsDocumentationCode Review & QualityAI & Agent BuildingSkill Development
MCP Servers by Category
Sales & MarketingWeb & Browser AutomationDatabasesAI & LLM ToolsCloud & InfrastructureCommunication & MessagingDeveloper ToolsDesign & CreativeDocuments & KnowledgeSearch & Web Crawling
Marketplaces by Category
AI Agents & OrchestrationLLM IntegrationDevelopment ToolsFrontend & UIBackend & APIsDatabasesTesting & Code QualityDevOps & CloudSecurity & ComplianceGit & Version Control

Cross AI Tools

Discover Claude Code plugins, extensions, and tools. Automatically updated directory of Anthropic Claude AI marketplaces with development tools, productivity plugins, and integrations.

Resources

  • Browse Skills
  • Browse MCP Servers
  • Browse Marketplaces
  • Plugins Reference

Community

  • About
  • Tools
  • Feedback
  • Privacy Policy
  • Advertise

Built for the Claude Code community with Claude Code by @mertduzgun

Independent project, not affiliated with Anthropic

MailX Email Deliverability

com.themailx/email-deliverability
1 toolsHTTPregistry active
Summary

Connects Claude to mailX's email deliverability and DNS infrastructure APIs. Exposes operations to check SPF, DKIM, DMARC, and BIMI records, run blacklist lookups, test SMTP and IMAP connections, and perform DNS queries (A, MX, TXT, CNAME, PTR records). Also generates email authentication records like SPF and DMARC policies. Useful when debugging why emails land in spam, auditing domain configurations across multiple clients, or troubleshooting mail server connectivity. All checks run against live DNS in real time. The underlying service is free with no signup required, making it straightforward for agents to diagnose deliverability issues on the fly without credential management.

CodeRabbit
CodeRabbit
AI writes the code. CodeRabbit catches the slop.
Try For Free →
Keep your Mac awake
Keep your Mac awake
Keep your Mac awake while Claude Code and 40+ AI agents run. Sleeps when they're idle.
One time payment $9 →
Context.devContext.dev
Context.dev
Integrate web data into your AI product. One API to scrape website & brand data.
Get API Key Now →
Make your agent a DeFi expert
Make your agent a DeFi expert
Agent, run crypto. Access onchain data & trade routes via 1inch.
Install now →
Make money from your Skills
Make money from your Skills
On Capafy, your Skill runs online 24/7 as an agent product, and you get paid every time someone uses it.
Start earning →
AppSignal
AppSignal
Monitor with ease. Code with confidence.
Start Free Trial →
CodeRabbit
CodeRabbit
AI writes the code. CodeRabbit catches the slop.
Try For Free →
Keep your Mac awake
Keep your Mac awake
Keep your Mac awake while Claude Code and 40+ AI agents run. Sleeps when they're idle.
One time payment $9 →
Context.devContext.dev
Context.dev
Integrate web data into your AI product. One API to scrape website & brand data.
Get API Key Now →
Make your agent a DeFi expert
Make your agent a DeFi expert
Agent, run crypto. Access onchain data & trade routes via 1inch.
Install now →
Make money from your Skills
Make money from your Skills
On Capafy, your Skill runs online 24/7 as an agent product, and you get paid every time someone uses it.
Start earning →
AppSignal
AppSignal
Monitor with ease. Code with confidence.
Start Free Trial →

Tools

Public tool metadata for what this MCP can expose to an agent.

1 tools
email_audit_deliverabilityUse this when you need to audit email deliverability for a domain. Checks SPF record validity, DKIM selectors (google, default, selector1), DMARC policy, and MX records. Returns a deliverability score1 params

Use this when you need to audit email deliverability for a domain. Checks SPF record validity, DKIM selectors (google, default, selector1), DMARC policy, and MX records. Returns a deliverability score

Parameters* required
domainstring
Domain to audit (e.g. example.com, gmail.com)
Featured
CodeRabbit
CodeRabbit
AI writes the code. CodeRabbit catches the slop.
Try For Free →
Keep your Mac awake
Keep your Mac awake
Keep your Mac awake while Claude Code and 40+ AI agents run. Sleeps when they're idle.
One time payment $9 →
Context.devContext.dev
Context.dev
Integrate web data into your AI product. One API to scrape website & brand data.
Get API Key Now →
Make your agent a DeFi expert
Make your agent a DeFi expert
Agent, run crypto. Access onchain data & trade routes via 1inch.
Install now →
Make money from your Skills
Make money from your Skills
On Capafy, your Skill runs online 24/7 as an agent product, and you get paid every time someone uses it.
Start earning →
AppSignal
AppSignal
Monitor with ease. Code with confidence.
Start Free Trial →
Categories
Communication & Messaging
Registryactive
TransportHTTP
UpdatedApr 17, 2026
Open website

Related Communication & Messaging MCP Servers

View all →
Microsoft 365 Teams

io.github.mindstone/mcp-server-microsoft-teams

Microsoft 365 Teams via Graph: list chats, read/send messages, list teams/channels, presence.
8
Outlook Email

com.mintmcp/outlook-email

A MCP server for Outlook email that lets you search, read, and draft emails and replies.
8
Resend Email MCP

helbertparanhos/resend-email-mcp

Complete Resend email MCP: full API coverage + debug layer (deliverability, DNS, bounces).
Email Mcp

marlinjai/email-mcp

Unified email MCP server for Gmail, Outlook, iCloud, and IMAP with batch operations
13
Email (IMAP/SMTP)

io.github.mindstone/mcp-server-email-imap

Email IMAP/SMTP MCP server: iCloud, Gmail, Yahoo, Outlook, and custom IMAP providers
8
HTML Email Playbook

io.github.osamahassouna/email-playbook-mcp

Teaches AI to write HTML email that renders in Outlook, Gmail, and Apple Mail. 19 rules, 6 comps.