Lua

Add Header Field to MIME Sub-Header in Email

See more Email Object Examples

Demonstrates how to add a header field to one of the attachment sub-headers in an email. Lua

local chilkat = require("chilkat")

-- This example requires the Chilkat API to have been previously unlocked.
-- See Global Unlock Sample for sample code.

local email = chilkat.Email.new()

email.subject = "test"
email:add_to("Chilkat", "support@chilkatsoft.com")
email.from = "Matt <matt@example.com>"
email.body = "This is a simple plain-text body."

local success = email:add_file_attachment2("qa_data/1.HPM", "application/x-hprimnet")
if not success then
    print(email.last_error_text)
    return
end

-- Add a "ContentDescription: HPM/3.0" in the attachment's sub-header.
-- The 1st attachment is at index 0.
email:add_attachment_header(0, "Content-Description", "HPM/3.0")

-- Show the email MIME:
print(email:get_mime())

-- This is the output:

-- MIME-Version: 1.0
-- Date: Wed, 16 Jan 2019 10:05:18 -0600
-- Message-ID: <93B88835586270B7BE5202F84E171F29C10BA935@CHILKATSLICE>
-- Content-Type: multipart/mixed; boundary="------------000502000000020502010608"
-- X-Priority: 3 (Normal)
-- Subject: test
-- To: Chilkat <support@chilkatsoft.com>
-- From: Matt <matt@example.com>
--
-- --------------000502000000020502010608
-- Content-Type: text/plain; charset=us-ascii; format=flowed
-- Content-Transfer-Encoding: 7bit
--
-- This is a simple plain-text body.
-- --------------000502000000020502010608
-- Content-Type: application/x-hprimnet; name="1.HPM"
-- Content-Transfer-Encoding: base64
-- Content-Disposition: attachment; filename="1.HPM"
-- Content-Description: HPM/3.0
--
-- FILE_DATA_IS_HERE...
--
-- --------------000502000000020502010608--