我正在测试Gmail的物流邮件标记功能，但似乎无法正确使用。这是我发送给自己的电子邮件后的邮件内容：
Return-Path: <test.email@gmail.com>
Received: from my-pc.local ([my.ip.add.ress])
by mx.google.com with ESMTPSA id 68sm3737559qgz.8.2015.01.29.06.06.37
for <test.email@gmail.com>
(version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128);
Thu, 29 Jan 2015 06:06:38 -0800 (PST)
Date: Thu, 29 Jan 2015 11:06:33 -0300
From: "Test Name" <test.email@gmail.com>
To: test.email@gmail.com
Subject: Your package is on its way
Message-ID: <20150129140633.GA18059@my-pc.local>
MIME-Version: 1.0
Content-Type: text/html; charset=us-ascii
Content-Disposition: inline
User-Agent: Mutt/1.5.23 (2014-03-12)
<html>
<body>
<script type="application/ld+json">
{
"@context": "http://schema.org",
"@type": "ParcelDelivery",
"deliveryAddress": {
"@type": "PostalAddress",
"streetAddress": "Test Address",
"addressLocality": "Test locality",
"addressRegion": "Test Region",
"addressCountry": "CL",
"postalCode": "7551234"
},
"expectedArrivalUntil": "2015-02-12T12:00:00-04:00",
"carrier": {
"@type": "Organization",
"name": "Test org"
},
"itemShipped": {
"@type": "Product",
"name": "iPod Mini"
},
"partOfOrder": {
"@type": "Order",
"orderNumber": "176057",
"merchant": {
"@type": "Organization",
"name": "Test Org 2"
},
"orderStatus": "OrderInTransit"
},
"trackingUrl": "http://track.com/track/1234567890",
"trackingNumber": "1234567890"
}
</script>
<p>Test paragraph</p>
</body>
</html>
这段文字是关于编程的内容，描述了根据标记验证器，标记是有效的。虽然有一些推荐但不是必需的字段我没有添加，但添加它们也没有帮助。
我还尝试过使用微数据格式，但迄今为止没有成功：
<html>
<body>
<div itemscope itemtype="http://schema.org/ParcelDelivery">
<div itemprop="deliveryAddress" itemscope itemtype="http://schema.org/PostalAddress">
<meta itemprop="streetAddress" content="Test Address"/>
<meta itemprop="addressLocality" content="San Francisco"/>
<meta itemprop="addressRegion" content="CA"/>
<meta itemprop="addressCountry" content="US"/>
<meta itemprop="postalCode" content="94107"/>
</div>
<meta itemprop="expectedArrivalUntil" content="2015-01-12T12:00:00-08:00"/>
<div itemprop="carrier" itemscope itemtype="http://schema.org/Organization">
<meta itemprop="name" content="Test Carrier"/>
</div>
<div itemprop="itemShipped" itemscope itemtype="http://schema.org/Product">
<meta itemprop="name" content="iPod Mini"/>
</div>
<div itemprop="partOfOrder" itemscope itemtype="http://schema.org/Order">
<meta itemprop="orderNumber" content="176057"/>
<div itemprop="merchant" itemscope itemtype="http://schema.org/Organization">
<meta itemprop="name" content="Bob Dole"/>
</div>
<meta itemprop="orderStatus" content="OrderInTransit"/>
</div>
<meta itemprop="trackingUrl" content="http://track.com/track/1234567890"/>
<meta itemprop="trackingNumber" content="1234567890"/>
</div>
<p>Test paragraph</p>
</body>
</html>
我该注意什么？
我正在使用mutt发送电子邮件：
mutt -e "set content_type=text/html" test.email@gmail.com -s "Your package is on its way" < test.html
或者不带内容类型：
mutt test.email@gmail.com -s "Your package is on its way" < test.html
600 IN TXT“v = spf1 a include：_spf.google.com〜all”。 - Antoine Pinsard