Perl mail attachment file size limit - perl

Question

I am using MIME::Lite module to send attachments in email and everything works fine until I realized attachment larger than 15mb cannot be sent successfully. Any suggestion on other module which not having size limit?

Answer 1

You should consider using a different module because that's what the author recommends (try Email::MIME, MIME::Entity or Email::Sender). However, it's not the module that determines the attachment size restriction.
The size limit you're seeing is set by your SMTP server. If you're not explicitly configuring your SMTP server you're using your local service which might differ depending on your OS. You're probably using sendmail or postfix.
See size limit in postfix
postconf | grep message_size_limit
See size limit in sendmail
grep MaxMessageSize /etc/mail/sendmail.cf
If you're using an external SMTP server they usually have their own size limits. Google has a 25MB size limit for their SMTP server smtp.gmail.com. If that's sufficient for you you could send your mail via Google by authenticating.
$msg->send(
'smtp', 'smtp.gmail.com',
Port => 465,
SSL => 1,
AuthUser => $user,
AuthPass => $password,
);
EDIT: I had some issues using MIME::Lite to work properly with Gmail SMTP server so I here's an example on how to use gmail.smtp.com with an alternative pacakge.
#!/usr/bin/env perl
use warnings;
use strict;
use Email::Sender::Simple qw( sendmail );
use Email::Sender::Transport::SMTP;
use Email::Simple;
my $user = 'username#gmail.com';
my $password = 'app-password';
my $host = 'smtp.gmail.com';
my $port = 465;
my $transport = Email::Sender::Transport::SMTP->new(
{
host => $host,
port => $port,
ssl => 1,
sasl_username => $user,
sasl_password => $password,
}
);
my $email = Email::Simple->create(
header => [
To => 'someone#example.com',
From => 'me#localhost',
Subject => 'Hello...',
],
body => "World!\n",
);
sendmail( $email, { transport => $transport } );