You can disable various email notifications under admin/config/people/accounts. On your development box, you might want to use the reroute email module (<a href="http://drupal.org/project/reroute_email">http://drupal.org/project/reroute_email</a>)<br>
<br><div class="gmail_quote">On Wed, Oct 26, 2011 at 2:40 PM, Iain William Wiseman <span dir="ltr">&lt;<a href="mailto:iwiseman@bibble.co.nz">iwiseman@bibble.co.nz</a>&gt;</span> wrote:<br><blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">
Hi,<br>
<br>
Is there a way to turn off sending of e-mail when updating user accounts. My understanding is that e-mails are sent when an account changes from inactivate to active. Love the functionality but testing with real data makes this inconvenient. On my development box I have turned off the MTA but this could easily be forgotten in future testing.<br>

<br>
Thanks,<br><font color="#888888">
Iain<br>
</font></blockquote></div><br>