(Perl) IMAP STARTTLS (Explicit TLS/SSL)

The StartTls property is set to force the Connect method to automatically convert an connection to TLS/SSL via the STARTTLS IMAP command.

This is also known as "explicit TLS/SSL" as opposed to "implicit TLS/SSL". With implicit TLS/SSL, the IMAP client connects on the well-known IMAP TLS/SSL port 993 and the secure channel is immediately established. With explicit TLS/SSL, the IMAP client connects on the typical non-secure port (143 usually) and the converts the connection via the STARTTLS command.

Chilkat Perl Downloads Perl Module for Windows, MacOS, Linux, Alpine Linux, Solaris

use chilkat();

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

$imap = chilkat::CkImap->new();

# Indicate that STARTTLS should be used to convert
# to a secure TLS/SSL connection:
$imap->put_StartTls(1);
$imap->put_Port(143);

# Connect to an IMAP server and convert the connection
# to TLS/SSL via STARTTLS.
$success = $imap->Connect("imap.someMailServer.com");
if ($success != 1) {
    print $imap->lastErrorText() . "\r\n";
    exit;
}

# The remainder of this example is the same as for 
# non-TLS/SSL...

# Login
$success = $imap->Login("myLogin","myPassword");
if ($success != 1) {
    print $imap->lastErrorText() . "\r\n";
    exit;
}

# Select an IMAP mailbox
$success = $imap->SelectMailbox("Inbox");
if ($success != 1) {
    print $imap->lastErrorText() . "\r\n";
    exit;
}

# We can choose to fetch UIDs or sequence numbers.
$fetchUids = 1;
# Get the message IDs of all the emails in the mailbox
# messageSet is a MessageSet
$messageSet = $imap->Search("ALL",$fetchUids);
if ($imap->get_LastMethodSuccess() == 0) {
    print $imap->lastErrorText() . "\r\n";
    exit;
}

# Fetch the emails into a bundle object:

# bundle is a EmailBundle
$bundle = $imap->FetchBundle($messageSet);
if ($imap->get_LastMethodSuccess() == 0) {

    print $imap->lastErrorText() . "\r\n";
    exit;
}

# Loop over the bundle and display the FROM and SUBJECT of each.
$i = 0;
$numEmails = $bundle->get_MessageCount();
while ($i < $numEmails) {
    # email is a Email
    $email = $bundle->GetEmail($i);
    print $email->ck_from() . "\r\n";
    print $email->subject() . "\r\n";
    print "--" . "\r\n";

    $i = $i + 1;
}

# Disconnect from the IMAP server.
$success = $imap->Disconnect();