Zig

Get the Content-Type of an Attachment

Demonstrates the Chilkat Email.GetAttachmentContentType method, which returns the Content-Type header field for the Nth attachment. Attachment indexing begins at 0. This example adds an attachment and reads its content type.

Background: The Content-Type (MIME type) of an attachment — such as text/plain, application/pdf, or image/png — tells a mail client how to handle the part: whether to display it inline, offer it as a download, or pick an icon for it. Reading it lets your program filter or route attachments by type, for example extracting only the PDFs from a batch of messages.

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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 GetAttachmentContentType method, which returns the Content-Type header
    // field for the Nth attachment.  The index is zero-based.

    const email = try chilkat.Email.init();
    defer email.deinit();
    email.setSubject("Attachment content type");

    email.addStringAttachment("notes.txt", "Some notes.") catch {};

    // Get the Content-Type of the first attachment (index 0).
    const ct = try email.getAttachmentContentType(alloc, 0);
    std.debug.print("Attachment 0 Content-Type: {s}\n", .{ct});
}