Developer tools
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Reading a card:↓ Downloads per weeki★ GitHub starsiThree pillars: reviews · checks · usageiUpdated = latest version published to the registryi
Thunderbird Cli
Give AI agents full read/write email access via Mozilla Thunderbird. Zero credentials.
smbCloud Mail & Auth
Email infrastructure and authentication for developers: domains, inbox routes, auth apps, deploys.
email59
Send transactional email from AI agents: sign up by email code, no domain or DNS setup.
Webhook.site MCP Server
Capture HTTP, email, and DNS callbacks with webhook.site from MCP clients.
Regex/Email/URL Validator
Regex matching, email/URL format validation, and JSON Schema validation.
DMARC Shark — Email DNS Checker
Check a domain's public SPF, DMARC, MX and DKIM DNS records on demand. No account required.
Bulk B2B Email Verifier — DNS MX, Disposable & Catch-All Check
Bulk verify B2B emails via Cloudflare DNS MX, SPF/DMARC, disposable check & 0-99 catch-all score.
DNS Lookup — Bulk SPF, DKIM, DMARC & Mail Policy Findings
Check DNS records and email authentication (SPF, DKIM, DMARC) for domains, as findings by severity
VerifyPulse: email deliverability checks
Daily SPF, DKIM, DMARC and MX monitoring with webhook alerts, plus free sending-domain audits.
Cli
Kanta Verify, Find, and Database: email verification, email finding, and B2B contact search.
webhooks.cc
Capture, inspect, send and assert on webhooks and inbound email from your coding agent.
Domain Trust Check (DNS, Email Auth, TLS, Headers)
Check a domain's DNS, SPF/DMARC and TLS before trusting it. $0.003/call via x402.
Cloudflare MCP Pro
Cloudflare MCP: DNS, Zones, Workers, KV, R2, D1, Pages, WAF, SSL, Email, AI via REST API v4