Raise MAI alerts from external systems by sending emails

Hello community,

with the increased capabilities of solman I am thinking of leveraging its alerting (and esp the related guided resolution procedure feature). However the question is open on how to raise an alert from external for non-SAP systems, which are able to send error emails. Currently I'm seeing the following two options for such non-SAP systems and Solman:

1. Sending emails to Solman and using the new SP13 Email-to-Event Converter as inbound API.
2. Sending the emails to PI and forwarding them to a provider web service for alert creation exposed by Solman

My questions are:

add (1): In the sales slides for SP13 it is stated that only emails send by SAP cloud applications are in scope. Is that true? Any experiences with the new tool?

add (2): Is there a MAI-alert provider service in Solman with an alert creation operation?

Or is there even another way we could create Solman MAI alerts with emails?

Thank you for your valuable feedback

Mark