Changelog

New features and changes, newest first.

October 13, 2026

Setup guides for 24 email providers

Setup guides: the SPF, DKIM and DMARC records for Google Workspace, Microsoft 365, Amazon SES, SendGrid, Mailchimp, Postmark and 18 more, checked against each provider's own documentation, with what aligns for DMARC and the mistakes that cost delivery.
Every free tool now answers the questions people ask about it, from the SPF lookup limit to MTA-STS caching.
The SPF record generator no longer adds an include for services that do not want one at the root (Amazon SES, SendGrid, Postmark, Mailchimp and others); it says where their SPF goes instead.

October 13, 2026

SORBS was shut down by Proofpoint in June 2024 and its domain no longer resolves, so a lookup there can only return nothing, or, should someone register the name again, whatever they choose. The blacklist check and monitoring now query Spamhaus ZEN, SpamCop, Barracuda, PSBL and UCEPROTECT Level 1.

October 10, 2026

The dashboard has a sidebar: monitoring, MCP & API, webhooks, the free tools, docs and settings in one place. Signed in, the free tools and the docs open inside the dashboard.
Get started: a guide that walks a new team from the first domain to alerts, DMARC reports and a connected agent, and ticks steps off as you go.
MCP & API shows this month's calls against your quota and every agent signed in as you, with a Disconnect button.
Profile: change your name, email and password, and switch between your teams.
Docs: getting started and AI agents (MCP), next to the REST API reference.

October 10, 2026

A new design for the site and the dashboard, in light and dark. It follows your system setting; the switch in the header remembers your choice.
The free domain check no longer keeps you waiting on the homepage: it opens the result page at once and fills it in when the check finishes, usually within seconds. Each result has its own address, /check/your-domain.com, kept for ten minutes.

October 10, 2026

MCP server for AI agents: connect Claude, ChatGPT, Cursor or VS Code with one sign-in (OAuth). Ten tools, from DKIM key audits to DMARC enforcement advice. See what agents can do.
Public MCP server with no account: the free DNS checks inside any assistant, rate-limited per IP.
DKIM key management: selector inventory from provider defaults, DMARC reports and your own list; provider-hosted (CNAME) keys; key size, fingerprint and age; rotation history; rotation reminders; per-selector pass rates and unaligned signers.
DKIM signature validator and in-browser DKIM key generator, free and without an account.
More free tools: DMARC report analyzer (one aggregate report, parsed in memory, never stored), email header analyzer (hops, delays, SPF/DKIM/DMARC/ARC results and alignment) and MTA-STS generator (exact records and policy from your live MX hosts).
Signed webhooks (Standard Webhooks) for DKIM key rotations, record changes, blacklist listings, alerts and new DMARC reports, with retries and a delivery log.
API: DKIM lookup, verify and generate endpoints, webhook management, alert resolve, and an interactive OpenAPI 3.1 reference.
Plans: Free covers DNS checks and simple monitoring; Starter $19.99, Pro $49.99, Enterprise $299.99 a month.

September 8, 2026

Posture score from SPF, DKIM, DMARC, MX, MTA-STS, TLS-RPT, BIMI, reverse DNS and six blacklists, with exact fix-it records.
Daily monitoring with record snapshots, change history and drift alerts.
DMARC report analysis with an enforcement advisor; blacklist, expiry and lookalike monitoring; clients, share links and branded reports for MSPs.
Free single-record tools, REST API v1 and the first MCP tools.