This is for when you need to have the results file sent to you if there are errors in said results file. This can be a little tricky because you will not get a file if all elements were successful although you can probably do something about that with the trigger rule.
In any case this is the last custom step of the post process and assuming you have the mail host set properly in the config boards, you should be golden.
<cli:CustomStep>
<cli:JavaClass>com.taleo.integration.client.customstep.mail.SendEmailPostStep</cli:JavaClass>
<cli:Parameters>
<cli:Parameter>
<cli:Name>active</cli:Name>
<cli:Value>true</cli:Value>
</cli:Parameter>
<cli:Parameter>
<cli:Name>SMTPHost</cli:Name>
<cli:Value>[MAIL_HOST]</cli:Value>
</cli:Parameter>
<cli:Parameter>
<cli:Name>from</cli:Name>
<cli:Value>[ALERTING_MAIL_FROM]</cli:Value>
</cli:Parameter>
<cli:Parameter>
<cli:Name>to</cli:Name>
<cli:Value>[ALERTING_MAIL_ON_ERROR_TO]</cli:Value>
</cli:Parameter>
<cli:Parameter>
<cli:Name>subject</cli:Name>
<cli:Value>Reporting - Subject/Object of Integration</cli:Value>
</cli:Parameter>
<cli:Parameter>
<cli:Name>messageTemplate</cli:Name>
<cli:Value>$file.content()</cli:Value>
</cli:Parameter>
<cli:Parameter>
<cli:Name>sendAttachment</cli:Name>
<cli:Value>true</cli:Value>
</cli:Parameter>
<cli:Parameter>
<cli:Name>triggeringRule</cli:Name>
<cli:Value>$logic.greaterThan($file.errorCount(),0)</cli:Value>
</cli:Parameter>
</cli:Parameters>
</cli:CustomStep>