Zig

Make a Copy of an Email

Demonstrates the Chilkat Email.MakeCopy method, which copies the entire state of this email into another Email object — message content, recipients, headers, body representations, attachments, and related items. This example copies an email and reads a couple of fields from the copy.

Background: A deep copy gives you an independent duplicate: changes to one object do not affect the other. This is handy for template-and-tweak workflows — build a base message once, copy it per recipient, then vary only the recipient or a few fields — without risk of one send's edits bleeding into the next.

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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 MakeCopy method, which copies the entire state of this email into
    // another Email object -- message content, recipients, headers, bodies, attachments, and
    // related items.

    const email = try chilkat.Email.init();
    defer email.deinit();
    email.setSubject("Original");
    email.setFrom("alice@example.com");
    email.addTo("Bob", "bob@example.com") catch {};
    email.setBody("Original body.");

    // Copy the entire email into a new Email object.
    const copy = try chilkat.Email.init();
    defer copy.deinit();

    email.makeCopy(copy) catch {
        std.debug.print("{s}\n", .{try email.getLastErrorText(alloc)});
        return;
    };

    std.debug.print("Copy subject: {s}\n", .{try copy.getSubject(alloc)});
    std.debug.print("Copy NumTo: {d}\n", .{copy.getNumTo()});
}