Zig Requires Chilkat v11.0.0+

How to Copy IMAP Mail to another IMAP Server

Demonstrates how to copy the entire contents of an IMAP mailbox to another IMAP server. Zig

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

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

    // This example requires the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    const imap_src = try chilkat.Imap.init();
    defer imap_src.deinit();

    // Connect to our source IMAP server.
    imap_src.connect("imap.example.com") catch {
        std.debug.print("{s}\n", .{try imap_src.getLastErrorText(alloc)});
        return;
    };

    // Login to the source IMAP server
    imap_src.login("admin@chilkatsoft.com", "myPassword") catch {
        std.debug.print("{s}\n", .{try imap_src.getLastErrorText(alloc)});
        return;
    };

    const imap_dest = try chilkat.Imap.init();
    defer imap_dest.deinit();

    // Connect to our destination IMAP server.
    imap_dest.connect("mail.example-code.com") catch {
        std.debug.print("{s}\n", .{try imap_dest.getLastErrorText(alloc)});
        return;
    };

    // Login to the destination IMAP server
    imap_dest.login("myLogin", "myPassword") catch {
        std.debug.print("{s}\n", .{try imap_dest.getLastErrorText(alloc)});
        return;
    };

    // Select an IMAP mailbox on the source IMAP server
    imap_src.selectMailbox("Inbox") catch {
        std.debug.print("{s}\n", .{try imap_src.getLastErrorText(alloc)});
        return;
    };

    // After selecting a mailbox, the NumMessages property will
    // be updated to reflect the total number of emails in the mailbox:
    std.debug.print("{d}\n", .{imap_src.getNumMessages()});

    // The emails in the mailbox will always have sequence numbers
    // ranging from 1 to NumMessages.

    // This example will copy the first 10 messages using sequence numbers
    const sb_mime = try chilkat.StringBuilder.init();
    defer sb_mime.deinit();
    var seq_num: i32 = 0;
    seq_num = 1;
    while (seq_num <= 10) : (seq_num += 1) {
        sb_mime.clear();
        imap_src.fetchSingleAsMimeSb(@as(u32, @intCast(seq_num)), false, sb_mime) catch {
            std.debug.print("{s}\n", .{try imap_src.getLastErrorText(alloc)});
            return;
        };

        imap_dest.appendMimeWithFlagsSb("Inbox", sb_mime, false, false, false, false) catch {
            std.debug.print("{s}\n", .{try imap_dest.getLastErrorText(alloc)});
            return;
        };
    }

    // Disconnect from the IMAP servers.
    try imap_src.disconnect();
    try imap_dest.disconnect();
}