All good, it is working : <dtml-var standard_html_header> <dtml-sendmail mailhost="MailHost"> From: hello.c@blinkd.com To: gnark@linux.fr Subject: hejka5 MIME-Version: 1.0 <dtml-mime type=text/html encode=quoted-printable> Hello !<br> Here we have some <b>HTML</b> tags.<br><br> </dtml-mime> </dtml-sendmail> It is working <!--#var standard_html_footer-->