Lua

Set Uncommon Email Options

Demonstrates the Chilkat Email.UncommonOptions property, a catch-all for uncommon needs. It defaults to the empty string and should typically remain empty. Recognized keywords include NoBccHeader (do not add the Bcc MIME header for BCC addresses — which must be set before calling AddBcc or AddMultipleBcc) and NO_FORMAT_FLOWED (do not automatically add format=flowed to a Content-Type header). This example sets NoBccHeader.

Background: Long-lived libraries accumulate rare, situational tweaks that do not each deserve their own property. Chilkat gathers these into a single keyword-driven UncommonOptions string. NoBccHeader is a good example: normally a Bcc header is generated (and stripped at send time), but certain workflows want it omitted entirely. Only documented keywords have any effect — unrecognized text is ignored — so leave this empty unless a specific compatibility need arises.

Chilkat Lua Downloads

Download Chilkat for Lua

Lua

local chilkat = require("chilkat")

-- Demonstrates the Email.UncommonOptions property, a catch-all for uncommon needs.
-- It defaults to empty and should usually remain empty.  Recognized keywords include
-- "NoBccHeader" (do not add the Bcc MIME header) and "NO_FORMAT_FLOWED".

local email = chilkat.Email.new()
email.subject = "UncommonOptions example"
email.from = "alice@example.com"

-- Do not add the Bcc MIME header for BCC recipients.  This keyword must be set
-- before calling AddBcc or AddMultipleBcc.
email.uncommon_options = "NoBccHeader"

email:add_bcc("Joe", "joe@example.com")

print("UncommonOptions = " .. email.uncommon_options)