Hello,
I hope when you say "email" you mean email and not workitem.
If the person who is to receive this email is the one who also receives the workitem, then the best solution of all is to set up Extended Notifications. It can send emails to anyone with a new workitem in their inbox, no need to add a new step to this or any other workflow.
But otherwise the next best idea is to send the email to the SAP user and set up SO16 to forward it on to their email address. This is done by:
To get SAP to forward mails from the SAP inbox to external emails you have to:
1) add the email address in SU01
2) set "Comm. Method" to "E-mail" in SU01 [in Address tab]
3) in SO16, tab Mail sy.grp, radio button "Send to Home Addresses of Users"
4) in SO16, tab Addressing, Reset buffer
You might have to add an extra step if it's not immediately obvious who is supposed to receive the workitem or email. Yet another reason to rely on Extended Notifications instead.
regards
Rick