docuseal/app/views/submitter_mailer/invitation_email.html.erb

<p>Hi there,</p>
<%= simple_format(@message) %>
<p><%= link_to 'Submit Form', submit_form_url(slug: @submitter.slug) %></p>
<p>Please contact us by replying to this email if you didn't request this.</p>
<p>
  Thanks,<br><%= @submitter.submission.template.account.name %>
</p>