Spam Resource Newsletter

DELIVTERMS: Postmaster Site


What is a Postmaster Site? A Postmaster Site (or Page) is a help page or helpful website published by an internet service provider (ISP) or mailbox provider (MBP) that is meant to assist people sending mail to subscribers of that ISP/MBP. If you're sending mail to Yahoo and that mail gets blocked, the bounce message likely contains a link to specific bounce information that is hosted on Yahoo's Postmaster Site (or as they like to call it, the Y! Senders Hub).

These kind of things are/were called Postmaster Pages (or Sites). Why? Because, "in computers and technology, a postmaster is the administrator of a mail server," and thus, in many cases, a person dealing with email deliverability issues (especially before the term deliverability was coined) would often be considered an email postmaster, and thus a Postmaster Site was published to help postmasters. AOL was probably the first big ISP to publish one of these things, if I recall correctly.

So, if you hear me talking about Postmaster Pages, it's both a sign that I'm looking for ISP-published information on how to resolve deliverability issues, and an indicator that I'm old, because it was a term probably more popular a good twenty years ago.

Here's a few of the more well known ISP/MBP Postmaster Pages/Sites:

Want to learn more about deliverability terminology? If so, be sure to visit the DELIVTERMS section here on Spam Resource.

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