queue method
Queue the email for background sending
Implementation
Future<void> queue() async {
try {
validate();
final content = build();
final html = content.toHtml();
final text = content.toText();
final mail = Mail().toMany(to).subject(subject).html(html).text(text);
if (cc.isNotEmpty) mail.ccMany(cc);
if (bcc.isNotEmpty) mail.bccMany(bcc);
await mail.queue();
print('📬 Email queued for: ${to.join(', ')}');
} catch (e) {
print('❌ Failed to queue email: $e');
rethrow;
}
}