php - Indepth Analysis: Prevent mail from being flagged as spam

I want to start an indepth discussion on all ways of
avoiding mail being flagged as spam. I have done most of what i knew to prevent mail
from being listed as spam. i have tried the
following

1) using phpmailer to setup
appropriate headers
2) used SPF correctly
3) implemented DKIM
correctly
4) my sender score is 93 href="https://www.senderscore.org/lookup.php?lookup=50.57.111.177&ipLookup.x=55&ipLookup.y=9"
rel="nofollow
noreferrer">https://www.senderscore.org/lookup.php?lookup=50.57.111.177&ipLookup.x=55&ipLookup.y=9

I
have even gone as far as asking hotmail etc to add me to a permited sender
policy.

all these have been all in vain. below
is a header i get from my gmail account. and the mail is still flagged as spam.

Delivered-To:
            jorfergie03@gmail.com

Received: by 10.220.15.207 with SMTP id
            l15cs5000vca;
 Wed, 26 Oct 2011 05:33:28 -0700 (PDT)
Received: by
            10.42.135.66 with SMTP id o2mr18662906ict.0.1319632407924;
 Wed, 26 Oct 2011
            05:33:27 -0700 (PDT)
Return-Path:
            
Received: from veepiz.com (veepiz.com.
            [50.57.111.177])
 by mx.google.com with ESMTP id
            x1si830537icv.118.2011.10.26.05.33.27;
 Wed, 26 Oct 2011 05:33:27 -0700
            (PDT)
Received-SPF: pass (google.com: domain of apache@veepiz.com designates
            50.57.111.177 as permitted sender)
            client-ip=50.57.111.177;
Authentication-Results: mx.google.com; spf=pass
            (google.com: domain of apache@veepiz.com designates 50.57.111.177 as permitted sender)
            smtp.mail=apache@veepiz.com; dkim=pass
            header.i=@veepiz.com

Received: from veepiz.com (localhost
            [127.0.0.1])
 by veepiz.com (Postfix) with ESMTP id 90FC6164356
 for
            ; Wed, 26 Oct 2011 12:33:27 +0000 (UTC)
X-DKIM:
            OpenDKIM Filter v2.4.1 veepiz.com 90FC6164356
DKIM-Signature: v=1;
            a=rsa-sha256; c=relaxed/relaxed; d=veepiz.com;
 s=default;
            t=1319632407;
 bh=Yx04NJ7TwKKjTvy0uhLTyTJZD9zjcioUaHvOP32UGOw=;

            h=To:Subject:Date:From:Reply-to:Message-ID:MIME-Version:

            Content-Type;

            b=dqOcgQInMj5B5JZv6sFIEVcrscrj+ayYAMf4OnOVQokEmcluMkUpRnEfyEo7NkL3t


            T84oTZIroG3yjdU9oqfUCNg9s/14zmbPbqE7j9cPLAsBOrfdMVfnl8b2YLBGS9nuh2

            0if4pjJBtFOjdduCp29DiWj9qg8BTZEiqFSOckoc=
Received: (from
            apache@localhost)
 by veepiz.com (8.13.8/8.13.8/Submit) id
            p9QCXRHt031452;
 Wed, 26 Oct 2011 12:33:27 GMT
To: Hassan Hussein
            
Subject: Hassan Hussein?, You've got unseen
            alerts pending
Date: Wed, 26 Oct 2011 12:33:27 +0000
From: Veepiz
            Alert 
Reply-to: Veepiz Alert
            

Message-ID:
            <1b841dbd639524b970b9adcf77a08704@localhost.localdomain>
X-Priority:
            3
X-Mailer: PHPMailer 5.1 (phpmailer.sourceforge.net)
MIME-Version:
            1.0
Content-Type: multipart/alternative;

            boundary="b1_1b841dbd639524b970b9adcf77a08704"


--b1_1b841dbd639524b970b9adcf77a08704
Content-Type:
            text/plain; charset = "iso-8859-1"

Content-Transfer-Encoding:
            8bit

Dear Hassan Hussein,
 You have a total of 6 alert(s)
            at veepiz.com.
These are listed below;

- 6 Unread
            Message(s).

Please visit http://www.veepiz.com and view
            these
unseen notifications.


Remember, to view
            your notifications, hover over
the yellow notifications icon on the
            menubar.

Thanks
            Management


--b1_1b841dbd639524b970b9adcf77a08704
Content-Type:
            text/html; charset = "iso-8859-1"
Content-Transfer-Encoding:
            8bit


Dear Hassan Hussein,
 You have a total of
            6 alert(s) at veepiz.com. These are
            listed below;

- 6 Unread Message(s).

Please
            visit http://www.veepiz.com and view
            these unseen notifications.

Remember, to view your notifications,
            hover over the yellow notifications icon on the
            menubar.


Thanks
            Management

Forgotten your password? go to             href='http://www.veepiz.com/forgot.php'>http://www.veepiz.com/forgot.php



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