Inserire un video in una Newsletter

[Prery]

Come da titolo mi servirebbe la consulenza di qualche esperto in grado di aiutarmi a capire come faccio ad incorporare un video in una newsletter e ad essere sicuro che il messaggio non arrivi spaginato ai destinatari Provo a postare la struttura html del mio messaggio

<center><!-- preheaderBlock --> <!-- /preheaderBlock -->
<table id="ko_singleArticleBlock_3" class="vb-outer" style="background-color: #ffffff;" border="0" width="100%" cellspacing="0" cellpadding="0" bgcolor="#ffffff">
<tbody>
<tr>
<td class="vb-outer" style="padding-left: 9px; padding-right: 9px; background-color: #fff;" align="center" valign="top" bgcolor="#ffffff"><!-- [if (gte mso 9)|(lte ie 8)]><table align="center" border="0" cellspacing="0" cellpadding="0" width="570"><tr><td align="center" valign="top"><![endif]-->
<div class="oldwebkit" style="max-width: 570px;">
<table class="vb-container fullpad" style="border-collapse: separate; border-spacing: 18px; padding-left: 0; padding-right: 0; width: 100%; max-width: 570px; background-color: #fff;" border="0" width="570" cellspacing="18" cellpadding="0" bgcolor="#ffffff">
<tbody>
<tr>
<td class="links-color" style="text-align: center;" align="left" valign="top" width="100%"><iframe src="https://www.youtube.com/embed/2jHVGyrA-XI" width="300" height="168" frameborder="0" allowfullscreen="allowfullscreen"></iframe></td>
</tr>
<tr>
<td>
<table border="0" width="100%" cellspacing="0" cellpadding="0" align="left">
<tbody>
<tr>
<td style="font-size: 18px; font-family: Arial, Helvetica, sans-serif; color: #3f3f3f; text-align: left;"><span style="color: #3f3f3f;">Prova</span></td>
</tr>
<tr>
<td style="font-size: 1px; line-height: 1px;" height="9">&nbsp;</td>
</tr>
<tr>
<td class="long-text links-color" style="text-align: left; font-size: 13px; font-family: Arial, Helvetica, sans-serif; color: #3f3f3f;" align="left">
<p style="margin: 1em 0px; margin-bottom: 0px; margin-top: 0px;">Prova prova prova</p>
</td>
</tr>
<tr>
<td style="font-size: 1px; line-height: 1px;" height="13">&nbsp;</td>
</tr>
<tr>
<td style="text-align: center;" valign="top">
<table class="mobile-full" border="0" cellspacing="0" cellpadding="0" align="left">
<tbody>
<tr>
<td style="font-size: 16px; font-family: Arial, Helvetica, sans-serif; color: #3f3f3f; font-weight: normal; padding-left: 18px; padding-right: 18px; background-color: #b7dde8; border-radius: 4px;" align="center" valign="middle" bgcolor="#b7dde8" width="auto" height="26"><a style="text-decoration: none; color: #3f3f3f; font-weight: normal;" target="_new">BUTTON</a></td>
</tr>
</tbody>
</table>
</td>
</tr>
</tbody>
</table>
</td>
</tr>
</tbody>
</table>
</div>
<!-- [if (gte mso 9)|(lte ie 8)]></td></tr></table><![endif]--></td>
</tr>
</tbody>
</table>
<!-- footerBlock --><!-- /footerBlock --></center>

Un aiutino? Cosa sbaglio?

[Prery]

ok stranamente sembrerei essere riuscito a risolvere da solo
usato opendem per impaginare la newsletter e risolto in fretta

https://ibb.co/dtKqGR