Lua

Save an Email to a .eml File

Demonstrates the Chilkat Email.SaveEml method, which converts the email object to EML and saves it to a file. An EML file contains the complete RFC822/MIME message — headers, bodies, related items, and attachments. This example builds a message and saves it.

Background: Saving as .eml writes the message in the universal MIME format that virtually every mail client can open, making it ideal for archiving, sharing, or handing a message to another program. It is the counterpart to LoadEml. A saved .eml also retains Chilkat's CKX- metadata headers (a way to store your own metadata with the email; they are always stripped before an email is sent), so .eml is the recommended way to persist a message even within Chilkat-based software. A separate Chilkat XML format (SaveXml) exists as an alternative, but offers no metadata advantage over .eml.

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Lua

local chilkat = require("chilkat")

-- Demonstrates the SaveEml method, which converts the email object to EML and saves it to
-- a file.  An EML file contains the complete RFC822/MIME message, including headers,
-- bodies, related items, and attachments.

local email = chilkat.Email.new()
email.subject = "Save as EML"
email.from = "alice@example.com"
email:add_to("Bob", "bob@example.com")
email.body = "Hello, this message will be saved as a .eml file."

-- Save the email to a .eml file.
local success = email:save_eml("qa_output/message.eml")
if not success then
    print(email.last_error_text)
    return
end

print("Saved to message.eml.")

-- Note: The path "qa_output/..." is a relative local filesystem path,
-- relative to the current working directory of the running application.