headers

local headers = mimepart.headers

Note

This is a field rather than a method, so you must use mimepart.headers rather than mimepart:headers to reference it.

Since: Version 2025.10.06-5ec871ab

The functionality described in this section requires version 2025.10.06-5ec871ab of KumoMTA, or a more recent version.

The headers field returns a reference to the HeaderMap for mimepart. You can use the headermap to enumerate or modify the set of headers in the mime part.

The example below prints the Subject header of the mime part:

local subject = mimepart.headers.subject()
print(subject)