Those things are possible, sending 'Answer emails' to customers in 'Query support flow', or sending 'Payment Unconfirmed Notification' to client. By placing "Message Throwing Intermediate Event" in the middle of a Workflow, an email that is created automatically in the Workflow, combining 'Sentences according to individual cases' and 'A fixed sentence' can be sent to addresses.
Place a [Message throwing Intermediate Event] in the middle of Workflow chart (Process Diagram). Drag & Drop an icon of [Message throwing Intermediate Event] that is in [Advance] pallet in [Process Diagram] of Process Modeler.
An email will be sent automatically when processes arrives at the 'Event'.
Settings of information (destination, Subject, To, Cc, contents body, etc.) are done in the property screen which appears by clicking icon.

For example, when the Subject always begins with "[Answer]", enter strings of "[Answer]". Then to embed data of "Subject" that flows on the workflow, enter "${[subject *]}" .
Thus, to embed "Business data" in the Workflow, they need to be written in special format. You can find the format by selecting [Embedded Command] pull-down menu, and click [Copy to Clipboard].
「A signature is always put in the last of email. But if there are lots of Message Events in a Workflow, it is very troublesome to open property screen of [Message throwing Intermediate Event] on every each Event.
In such a case, create "Signature" process data item, enter the content as initial value. Then embed it in the format "${[Signature:14]}".
Make settings to automatically send an email to those in need of consensus-building
Process Model Connecting API: Specifications Data Transmission (Email)