append_part
Since: Dev Builds Only
The functionality described in this section requires a dev build of KumoMTA. You can obtain a dev build by following the instructions in the Installation section.
Appends PART, which must also be a MimePart (perhaps created via
kumo.mimpart.new_text or similar) to the set of
child parts in mimepart.
This is potentially useful when constructing complex multipart messages. You
are responsible for ensuring that the resulting mime tree makes logical sense;
mimepart should have a Content-Type that is recognized as being a multipart
container of some kind.
You might consider instead using kumo.mimepart.builder for a simpler message building experience.