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Testing HTML email rendering [closed]

Are there any good tools to easily test how HTML email will look across different email clients? I prefer something with instant feed back rather than a submit and wait service like http://litmusapp.com Or at the very least a way to test the Outlook 2007/MS Word rendering? ...
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Which is better: … or …

... Do you need a type attribute at all? If you're using HTML5, no. Otherwise, yes. HTML 4.01 and XHTML 1.0 specifies the type attribute as required while HTML5 has it as optional, defaulting to text/javascript. HTML5 is now widely implemented, so if you use the HTML5 doctype, <...
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How do you post to an iframe?

... Depends what you mean by "post data". You can use the HTML target="" attribute on a <form /> tag, so it could be as simple as: <form action="do_stuff.aspx" method="post" target="my_iframe"> <input type="submit" value="Do Stuff!"> </form> <!-- when ...
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App Inventor Web浏览器嵌入HTML/JavaScript的路径问题 - App Inventor 2 ...

...权限收紧,试过了好几种路径都不能正常加载 assets 中的 html文件。Google到直接使用这个地址就可以了,完美!http://localhost/<NAME OF YOUR ASSETS HTML FILE>.html 测试aia见附件,可以正常加载assets中的html文件。经测试,AI伴侣及apk...
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HTML5 doctype putting IE9 into quirks mode?

... @Abhishek: meta elements need not be explicitly closed in HTML5 (and historically against older HTML specs closing it would in fact be invalid). – reisio May 23 '12 at 19:19 ...
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Prevent HTML5 video from being downloaded (right-click saved)?

... Thanks. I Just read craftymind.com/factory/html5video/CanvasVideo.html. The idea is almost same as your answer. – Trung Jun 19 '13 at 4:26 1 ...
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Can multiple different HTML elements have the same ID if they're different elements?

Can multiple HTML elements have the same ID if they're of different element types? Is a scenario like this valid? Eg: 16 An...
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Do I encode ampersands in ?

I'm writing code that automatically generates HTML, and I want it to encode things properly. 4 Answers ...
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Using link_to with embedded HTML

I'm using Twitter's Bootstrap stuff and I have the following HTML: 12 Answers 12 ...
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Infinity symbol with HTML

How can I display an infinity symbol (like the one in the picture) using HTML? 9 Answers ...