Informing reviewers about submissions assigned for review

I would like to inform the reviewers about the assigned submissions. How do I do this?
Are there any automatic mails sent?

ConfTool does not send automatic e-mails to reviewers at the moment you assign a paper to a reviewer for reviewing. This is a deliberate design decision, as we don't think it is a good idea to send many separate e-mails on this to each reviewer, but to inform them in one e-mail after the assignment process is complete.

Please use the bulk-mail function for information purposes after having assigned all submissions for reviewing.

For further information please see:
http://www.conftool.net/en/administrator_documentation/assigning_reviews.html
http://www.conftool.net/en/administrator_documentation/bulk_e_mails.html