zcash-grant-system/backend/grant/templates/emails/proposal_canceled.html

<p style="margin: 0 0 20px;">
  This notice is to inform you that your proposal <strong>{{ args.proposal.title }}</strong>
  has been canceled.
</p>
  
<p style="margin: 0;">
  If you have any further questions, please
  <a href="{{ args.support_url }}">contact support</a>
  for more information.
</p>