Is it possible to add an HTML link in the body of a MAILTO link [duplicate]

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忘了有多久

2020-11-22 15:45

Section 2 of RFC 2368 says that the body field is supposed to be in text/plain format, so you can't do HTML.

However even if you use plain text it's possible that some modern mail clients would render a URL as a clickable link anyway, though.

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野性不改

2020-11-22 15:47

I have implement following it working for iOS devices but failed on android devices

<a  href="mailto:?subject=Your mate might be interested...&body=<div style='padding: 0;'><div style='padding: 0;'><p>I found this on the site I think you might find it interesting.  <a href='@(Request.Url.ToString())' >Click here </a></p></div></div>">Share This</a>

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醉梦人生

2020-11-22 15:52

It isn't possible as far as I can tell, since a link needs HTML, and mailto links don't create an HTML email.

This is probably for security as you could add javascript or iframes to this link and the email client might open up the end user for vulnerabilities.

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走了就别回头了

2020-11-22 15:52

Please check below javascript in IE. Don't know if other modern browser will work or not.

<html>
    <head>
        <script type="text/javascript">
            function OpenOutlookDoc(){
                try {

                    var outlookApp = new ActiveXObject("Outlook.Application");
                    var nameSpace = outlookApp.getNameSpace("MAPI");
                    mailFolder = nameSpace.getDefaultFolder(6);
                    mailItem = mailFolder.Items.add('IPM.Note.FormA');
                    mailItem.Subject="a subject test";
                    mailItem.To = "an@email.here";
                    mailItem.HTMLBody = "<b>bold</b>";
                    mailItem.display (0); 
                }
                catch(e){
                    alert(e);
                    // act on any error that you get
                }
            }
        </script>
    </head>
    <body>
        <a href="javascript:OpenOutlookDoc()">Click</a>
    </body>
</html>

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攒了一身酷

2020-11-22 16:03
Add the full link, with:
```
 "http://"
```
to the beginning of a line, and most decent email clients will auto-link it either before sending, or at the other end when receiving.

For really long urls that will likely wrap due to all the parameters, wrap the link in a less than/greater than symbol. This tells the email client not to wrap the url.

e.g.
```
  <http://www.example.com/foo.php?this=a&really=long&url=with&lots=and&lots=and&lots=of&prameters=on_it>
```
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时光说笑

2020-11-22 16:03
The specification for 'mailto' body says:
The body of a message is simply lines of US-ASCII characters. The only two limitations on the body are as follows:
- CR and LF MUST only occur together as CRLF; they MUST NOT appear independently in the body.
- Lines of characters in the body MUST be limited to 998 characters, and SHOULD be limited to 78 characters, excluding the CRLF.
https://tools.ietf.org/html/rfc5322#section-2.3

Generally nowadays most email clients are good at autolinking, but not all do, due to security concerns. You can likely find some work-arounds, but it won't necessarily work universally.
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