bimi

A better whois and domain intelligence toolkit

Command line utility and a Node.js library for email authentication

DMARC & SMTP-TLS Reports processor and visualizer and BIMI file hoster

A PowerShell module to test and explain all facets of a domain's email records.

DNS and email security audit: DMARC (RFC 9989), SPF, DKIM, MX, MTA-STS, TLS-RPT, BIMI, DNSSEC, DANE and the DMARC DNS tree walk.

CLI tool for SVG Tiny P/S (Portable and Secure) conversion

A .NET library providing utilities for mail such as DKIM, SPF,MX and DMARC.

Resolve BIMI DNS TXT records and fetch the brand logo URL for an email domain.

SVG (Portable and Secure) converter for BIMI compliance.

Explore BIMI logos from around the internet

Thunderbird add-on that shows a picture for every sender: configurable picture sources, privacy controls on online lookups, per-sender rules. A performance-focused fork of Auto Profile Picture by Noam SCHMITT (MPL-2.0).

Email Deliverability and DNS Records Checker

DNS email security analyzer — DMARC, SPF, DKIM, BIMI & MTA-STS. Cloudflare Worker with JSON API and interactive HTML report.

MCP server for domain and email security audits — SPF, DKIM, DMARC, MTA-STS, BIMI, DNSSEC, DNS, TLS/SSL and WHOIS. No API keys required.

MCP server for IntoDNS.ai — free DNS, DMARC, SPF, DKIM, BIMI, MTA-STS, DNSSEC & email security checks for Claude, Cursor, ChatGPT and other AI agents. No API key required.

A daily record of how the internet's email security actually changes. Tracks SPF, DMARC, DKIM, MTA-STS, BIMI and TLS-RPT across the top 100,000 domains and publishes every change it observes.

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. JSON output + Claude Code skill.

Free, open-source tools to set up, validate, and understand BIMI.

bimi-svg-worker

Sender icons for Thunderbird's message list: contact photos, BIMI logos, avatars and site icons