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

<p style="margin: 0 0 20px;">
  The proposal milestone
  <a href="{{ args.proposal_milestones_url }}" target="_blank">
    {{ args.proposal.title }} - {{ args.proposal.current_milestone.title }}</a
  >
  payout of <b>{{ args.amount }} ZEC</b> has been approved.
</p>

<p style="margin: 0;">
  You will receive payment shortly!
</p>