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Quoted-Printable emails not rendering correctly

See original GitHub issue

I think this is the same issue as https://github.com/mailslurper/mailslurper/issues/83 but it’s marked closed and I can’t reopen it.

I sent this simple email via Mailslurp:

<!doctype html>
<html>
<head>
	<title></title>
</head>
<body>
This is a test email. <a href="http://example.com">Link</a>

</body>
</html>

Result: mailslurp

Viewing source we see: <a href=3D"http://example.com">

I stuck a socat listener in between the mail client and Mailslurp, the conversation is below. The mail client correctly includes the Content-Transfer-Encoding: quoted-printable header to indicate the content encoding is QP.

➜ socat -v TCP-LISTEN:2501,fork,reuseaddr TCP:localhost:2500
220 Welcome to MailSlurper!\r
EHLO localhost\r
250 Hello. How very nice to meet you!\r
MAIL FROM:<test@test.com>\r
250 Ok\r
RCPT TO:<test@test.com>\r
250 Ok\r
DATA\r
354 End data with <CR><LF>.<CR><LF>\r
Mime-Version: 1.0\r
Date: Fri, 06 Sep 2019 12:47:07 +0100\r
Message-Id: <1567770427392666000.4685.4156668335605406494@localhost>\r
Subject: MLTest01\r
To: "Dummy Derp" <test@test.com>\r
From: test@test.com\r
X-Mailer: gophish\r
Content-Type: text/html; charset=UTF-8\r
Content-Transfer-Encoding: quoted-printable\r
\r
<!doctype html>\r
<html>\r
<head>\r
	<title></title>\r
</head>\r
<body>\r
This is a test email. <a href=3D"http://example.com">Link</a>\r
\r
<img alt=3D'' style=3D'display: none' src=3D'http://localhost/track?rid=3D0=\r
RtyL3a'/></body>\r
</html>\r
.\r
250 Ok\r