Content-Type: text/html; charset=iso-8859-1 Content-Transfer-Encoding: quoted-printable
This text contains special characters like =E4=F6=FC=DF (äöüß in ISO-8859-1).
Line breaks should be handled properly even when they are=20 split across multiple lines with soft breaks.
Special HTML characters like < and > should be preserved: <div>test</div>
Equals sign needs to be escaped: 3=3D2+1
Euro symbol: =80
Copyright: =A9
Registered trademark: =AE
Long line that exceeds the 76 character limit and should be wrapped with soft line breaks= in quoted-printable encoding but should appear as a single line when decoded.