ARF is a machine-readable MIME format for feedback reports intended to allow easy automated handling of reports by recipients. Word to the Wise provide some resources and software to assist with sending and receiving ARF reports.

Our blog. Daily email-related news, commentary, research and rants.

Our wiki. Some useful information, including lots of data about ISP whitelists, feedback loops, rate limit throttling...

Anything security, authentication or phishing related.

The Labs is where we publish useful tools, scripts or articles we've produced. Mostly things we've developed, or are developing, for our own use that we think others may find useful too.