Hi,
We also encountered this problem and we solved it by following the Webservice guide from BP portal https://portal.blueprism.com/system/files/product/productpublic/4.2/Blu
We used code stage to create a webservice wrapper from WSDL. Refer to page ...
You can extend or copy existing MAPIEX VBO. In your code stage for the Send Email add .SetRTF property of BPMAPIMessage.
For example:
msg As New BPMAPIMessage()
msg.SetRTF =