Zig

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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Zig

const std = @import("std");
const chilkat = @import("chilkat");

pub fn main(init: std.process.Init) !void {
    const alloc = init.arena.allocator();

    // 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.

    const email = try chilkat.Email.init();
    defer email.deinit();
    email.setSubject("Save as EML");
    email.setFrom("alice@example.com");
    email.addTo("Bob", "bob@example.com") catch {};
    email.setBody("Hello, this message will be saved as a .eml file.");

    // Save the email to a .eml file.
    email.saveEml("qa_output/message.eml") catch {
        std.debug.print("{s}\n", .{try email.getLastErrorText(alloc)});
        return;
    };

    std.debug.print("Saved to message.eml.\n", .{});

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