Zig

Set the X-Mailer Header of an Email

Demonstrates the Chilkat Email.Mailer property, which identifies the email software that sent the email. It corresponds to the MIME X-Mailer header. This example sets the mailer string and shows it in the generated MIME.

Background: X-Mailer is an optional, informational header — the X- prefix marks it as non-standard — that names the program used to compose or send the message. Mail servers do not require it and it has no effect on delivery; it is mainly useful for diagnostics and analytics. Because it is self-reported, it is trivially spoofable and should never be relied on for security decisions.

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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 Email.Mailer property, which identifies the email software
    // that sent the email.  This corresponds to the MIME X-Mailer header.

    const email = try chilkat.Email.init();
    defer email.deinit();

    email.setMailer("My Custom Mailer 1.0");

    std.debug.print("Mailer = {s}\n", .{try email.getMailer(alloc)});

    // The X-Mailer header appears in the generated MIME.
    std.debug.print("{s}\n", .{try email.getMime(alloc)});
}