Some messages appear as pure text, there must be some formatting problem

Seems like I failed some parts. As an example, the following message

From: <TheDreadShips <thedreadships@www.twitter.com>>
To: <Nicolas Delsaux <nicolas.delsaux@gmx.fr>>
Subject: [TheDreadShips] Every time I post a picture of a ship in dazzle camouflage,
     somebody says they can't see it.

This is why I add alt text. https://t.co/pfYKdXXMOk
Date: Sun, 18 Jun 2023 12:53:29 +0000
Message-ID: <1769c5b1edf1ed3a.eba82ccddb70abf9.6c893376aa98d54c@raspberrypi>
Content-Type: text/html; charset="utf-8"
Content-Transfer-Encoding: quoted-printable

        <html>
        <head>
            <meta http-equiv=3D"Content-Type" content=3D"text/html">
            <style>
                img {
    max-width: 100% !important;
    height: auto;
}

body,
#body {
    font-size: 12pt;
    word-wrap: break-word;
    -webkit-nbsp-mode: space;
    -webkit-line-break: after-white-space;
    font-family: Georgia, Times New Roman, Times, serif;
}

a:link {
    color: #0000cc
}

h1.header a {
    font-weight: normal;
    text-decoration: none;
    color: black;
}

.summary {
    font-size: 80%;
    font-style: italic;
}

            </style>
        </head>
   =20
        <body>
            <div id=3D"entry">
                <h1 class=3D"header"><a href=3D"https://twitter.com/TheDread=
Ships/statuses/1670414429060562944">[TheDreadShips] Every time I post a pict=
ure of a ship in dazzle camouflage, somebody says they can't see it.

This is why I add alt text. https://t.co/pfYKdXXMOk</a></h1>
                <div id=3D"body"><div style=3D'float:left;margin: 0 6px 6px =
0;'>
    <a href=3D'https://twitter.com/TheDreadShips/statuses/1670414429060562944' =
border=3D0 target=3D'blank'>
        <img src=3D"" border=3D=
0 />
    </a>
</div>
<strong>Dreadnought Holiday</strong> <a href=3D'https://twitter.com/TheDread=
Ships' target=3D'blank'>@TheDreadShips</a><br />
Every time I post a picture of a ship in dazzle camouflage, somebody says th=
ey can't see it.

This is why I add alt text. <a href=3D"https://t.co/pfYKdXXMOk" target=3D"bl=
ank">pic.twitter.com/pfYKdXXMOk</a><img src=3D"" border=3D0 />

</div>
                <p class=3D"footer">URL: <a href=3D"https://twitter.com/TheD=
readShips/statuses/1670414429060562944">https://twitter.com/TheDreadShips/st=
atuses/1670414429060562944</a></p>
            </div>
        </body>
    </html>
       =20

is rendered as raw text, instead of HTML.

Riduidel / rrss2imap

Some messages appear as pure text, there must be some formatting problem #109