Whenever your Dolphin 7.1.x website sends out a notification email the end user will receive a link to BoonEx Dolphin in the footer of the email message. Now granted this is fairly small and not really that noticeable, but you can remove this fairly easy.

It will say this in an email footer:
Our website is powered by BoonEx Dolphin. Anyone can create their own nice social network using BoonEx software.

Which, links to:
http://www.boonex.com/dolphin


To remove this, you can edit:
/templates/base/_email_footer.html

If you are using another template that doesn't have this file you can copy it to your template directory/folder like so:
/templates/tmpl_XXX/_email_footer.html and then edit it.

Note:
If you are using the default Dolphin 7.1 uni template and there happens to be an upgrade that overwrites this file you would need to remember to reapply the changes you make to this file. Otherwise, the Boonex email footer links would come back.


Open:
/templates/base/_email_footer.html

Find:
            </div>

        </td></tr>

        <tr><td valign="top">
                <div style="margin-top:5px; text-align:center; color:#999; font:11px Helvetica Neue, Helvetica, Arial, Verdana, sans-serif;">
                    <bx_text:_sys_email_footer_info />
                </div>                    
                <div style="margin-top:5px; text-align:center; color:#999; font:11px Helvetica Neue, Helvetica, Arial, Verdana, sans-serif;">
                    <BoonexEmailFooter>
                </div>
        </td></tr>

    </table>

</div>

</body></html>


Simply remove the code/line:
<BoonexEmailFooter>

Like:
            </div>

        </td></tr>

        <tr><td valign="top">
                <div style="margin-top:5px; text-align:center; color:#999; font:11px Helvetica Neue, Helvetica, Arial, Verdana, sans-serif;">
                    <bx_text:_sys_email_footer_info />
                </div>                    
                <div style="margin-top:5px; text-align:center; color:#999; font:11px Helvetica Neue, Helvetica, Arial, Verdana, sans-serif;">
                </div>
        </td></tr>

    </table>

</div>

</body></html>



Save the changes back to your hosting account.

Be sure to clear the Dolphin 7.1.x Template Cache just to make sure it gets updated.
Tools
-Cache

Clear Cache
--Templates or --All





Now test this by subscribing to something, or sending yourself a mass mail to verify the Boonex email footer links are gone.


Screenshot with Boonex link in email footer:





Screenshot with Boonex link in email footer removed:





You can also add custom html to the _email_footer.html file to spruce it up a bit. The same goes for _email_header.html.


Additionally:
You might take the time to go through all the email template text located in your Dolphin Administration Dashboard at:
Settings
-Email Templates


There are a number of them that really should be updated to use better/proper English. For example, the Subscription: new comments to article says:
The article you subscribed to got new comments!

It would probably be better to change it to something like:
The article you subscribed to has new comments!

There are quite a few of them, but tweak them to suit your needs.