Ecosystem directory

Organizations, events and solutions of the email ecosystem. Every entry is verified and dated.

Operator tools

Tools that mailbox providers and filters make available to senders: reputation, per-IP data, feedback loops.

Abusix Intel

🇩🇪 Germany · verified on 13/10/2026

Abusix lookup tool: for an IP address or a domain, it shows whether it is listed in Abusix Mail Intelligence, the reason for the listing and how to be delisted. Used by senders to check and resolve a block.

Google Postmaster Tools

🇺🇸 United States · verified on 01/10/2026

Free dashboard provided by Google to senders who have verified their domain. For traffic to Gmail it shows the user-reported spam rate, domain and IP reputation, SPF, DKIM and DMARC authentication rates, encryption and delivery errors. A version 2 shows compliance with the sender requirements.

Microsoft SNDS

🇺🇸 United States · verified on 01/10/2026

Smart Network Data Services, a free Microsoft service giving owners of IP address ranges data about traffic sent to Outlook.com: volume, complaint rate, spam trap hits and a per-IP reputation colour. Complemented by the Junk Email Reporting Program (JMRP), Microsoft's feedback loop.

Vade SenderTool

🇫🇷 France · verified on 13/10/2026

Sender portal of Vade (anti-spam filter used by several operators and mailbox providers, notably in France): check the reputation of an IP or domain in its filters and request a review of a block.

Validity Universal Feedback Loop

🇺🇸 United States · verified on 13/10/2026

Universal feedback loop operated by Validity on behalf of several mailbox providers: a sender registers its IPs and receives recipient complaints in ARF format, in order to remove the addresses concerned from its lists.

Yahoo Sender Hub

🇺🇸 United States · verified on 01/10/2026

Yahoo's portal for senders, gathering sending requirements, sign-up for the DKIM-based Complaint Feedback Loop and deliverability best practices for Yahoo and AOL domains. Entry point for sender support requests.

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