aenetmail

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I noticed that all underscore characters are getting replaced by a space. We have a workflow where we are reading URL from the email body, but all URLs with underscore are broken after reading via the our app. e.g Actual URL in email:

http://en.m.wikipedia.org/wiki/Google_Web_Server

URL read by the app:

http://en.m.wikipedia.org/wiki/Google Web Server\r\n

The 'Q' encoding used in rfc2047 headers uses underscores to encode spaces for easier legibility. The Content-Transfer-Encoding: quoted-printable encoding does not do this and has other differences as well.

Currently the code uses Utilities.DecodeQuotedPrintable() for both cases and here's where underscores are converted to spaces:

https://github.com/andyedinborough/aenetmail/blob/master/Utilities.cs#L241

As a quick and dirty hack, you could probably modify DecodeQuotedPrintable to take a boolean arg to specify if it should decode underscores and then modify the code that uses it to pass the correct true/false value.

I was aware of this function, but wasn't sure how it works. Will do a quick hack myself now.