Zig

Send an Email via SMTP

Demonstrates the Chilkat MailMan.SendEmail method, which sends a single Email object through the configured SMTP server. This example configures the SMTP connection, builds a message, and sends it.

Background: SMTP (Simple Mail Transfer Protocol) is the protocol for sending mail. The typical flow is: connect to the server, authenticate, then hand over the message with MAIL FROM, RCPT TO, and DATA. SendEmail wraps all of that: you build an Email with subject, recipients, and body, and Chilkat renders it to MIME and delivers it. Modern submission commonly uses implicit TLS on port 465 (SmtpSsl = true).

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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 MailMan.SendEmail method, which sends a single Email object through the
    // configured SMTP server.

    const mailman = try chilkat.MailMan.init();
    defer mailman.deinit();

    // Configure the SMTP server connection.
    mailman.setSmtpHost("smtp.example.com");
    mailman.setSmtpPort(465);
    mailman.setSmtpSsl(true);
    mailman.setSmtpUsername("user@example.com");
    mailman.setSmtpPassword("myPassword");

    // Build the email to send.
    const email = try chilkat.Email.init();
    defer email.deinit();
    email.setSubject("Test email from Chilkat");
    email.setFrom("alice@example.com");
    email.addTo("Bob", "bob@example.com") catch {};
    email.setBody("Hello, this is a test message.");

    // Send the email.

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

    std.debug.print("Email sent.\n", .{});

    // Note: Explicitly connecting/authenticating is optional.  Chilkat MailMan automatically
    // connects and authenticates -- using the property settings above -- whenever a server
    // operation requires it.  Calling the explicit connect/authenticate methods can still be
    // helpful to determine whether a failure occurs while connecting or while authenticating.
}