From owner-freebsd-questions Sat Apr 21 6:40: 9 2001 Delivered-To: freebsd-questions@freebsd.org Received: from lists01.iafrica.com (lists01.iafrica.com [196.7.0.141]) by hub.freebsd.org (Postfix) with ESMTP id 8DC3537B422 for ; Sat, 21 Apr 2001 06:40:04 -0700 (PDT) (envelope-from sheldonh@uunet.co.za) Received: from nwl.fw.uunet.co.za ([196.31.2.162]) by lists01.iafrica.com with esmtp (Exim 3.12 #2) id 14qxcI-0002fv-00 for freebsd-questions@freebsd.org; Sat, 21 Apr 2001 15:40:02 +0200 Received: (from nobody@localhost) by nwl.fw.uunet.co.za (8.8.8/8.6.9) id PAA02455 for ; Sat, 21 Apr 2001 15:40:00 +0200 (SAST) Received: by nwl.fw.uunet.co.za via recvmail id 2341; Sat Apr 21 15:39:05 2001 Received: from sheldonh (helo=axl.fw.uunet.co.za) by axl.fw.uunet.co.za with local-esmtp (Exim 3.22 #1) id 14qxbM-000O51-00 for freebsd-questions@FreeBSD.org; Sat, 21 Apr 2001 15:39:04 +0200 To: freebsd-questions@freebsd.org Subject: Detecting mail client capabilities Date: Sat, 21 Apr 2001 15:39:04 +0200 Message-ID: <92566.987860344@axl.fw.uunet.co.za> From: Sheldon Hearn Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG Hi folks, I'm embarrassed to ask this, but the folks I'm doing some work for insist that it's possible, so here goes... Is there teechnology available that allows one to determine what the rendering capabilities of a customers e-mail client are without the customer having explicitly sent one mail from that client? My employer's confirmation process for their opt-in mailing list requires the customer to click on a web URL within their mail message. When they hit that URL, confirmation is registered. So there are many customers from whom we will never actually receive a mail message. Hence the question. Please don't flame me too much. In my mind, this is impossible, but I did undertake to confirm my suspicions. As I said, my employer insists that this is possible, mostly because the company that handled their mass-mailing for them before told them that this was part of the service they were paying for. Thanks, Sheldon. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message