I know that we can not send a Outbound message using process builder, However we can have a workaround to invoke an apex method which calls send the http callout as explained here:
- I would like to know is it a good thing to do?
- What will be the difference between this callout and workflow outbound message?
- Is Callout Limits, one of the considerations?
- What about the headers in Workflow Outbound message?