(NB: There are no over-rides for the email html templates, so any edits you do are likely to be lost in future software upgrades).

FTP a COPY of this file to your hard drive:

in folder email\

email_template_checkout.html

and consider that file to be the BACKUP of the original. Re-name it to:

email_template_checkout.bak

------------------------

Now, FTP another copy of the same file to your hard drive, and this is the one you will edit.

OPEN the file for editing using a PLAIN TEXT EDITOR, NOT a HTML editor!

(Plain text editors include notepad, Crimson Editor, etc)

Find - near the bottom - this section:

HTML Code:
        <td class="payment-footer">$PAYMENT_METHOD_FOOTER</td>
      </tr>
      </table>
     </td>
    </tr>
  </table>
 </div>
</div>

  <!-- Footer Section -->
Make these edits:

HTML Code:
        <td class="payment-footer">$PAYMENT_METHOD_FOOTER</td>
      </tr>
      </table>
     </td>
    </tr>

    <tr>
     <td class="returns-policy" colspan="2">Your custom text goes here...</td>
    </tr>    
    
  </table>
 </div>
</div>

  <!-- Footer Section -->

As you will see, I have given this its own style class - returns-policy - so you can now add a style to it in the header of the template. You should make the font size specific - possibly the same as that governing payment-footer

SAVE the file, and FTP it back to the email/ folder. You will be prompted to OVERWRITE the existing file. Do so.

If necessary, restore your backup, after re-naming it from .bak to .html