append

headers:append(NAME, VALUE)

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.

Constructs a new header with NAME and VALUE and appends it to the header map.

If the header value is ascii then it will be soft wrapped at whitespace around 75 columns, and hard-wrapped regardless of whitespace at 900 columns.

If the header value is non-ascii then it will be quoted printable encoded using RFC 2047 header encoding.

headers:append('X-Something', 'Some value')