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Check email status

Is there any way to check email status when I'm sending email? I know at least 3 statuses: sent, deferred, denied, and I want to do some logic depends on it. I've tried a lot of libraries like javax.mail, simpejavamail and didn't find any way to get status.
My last attempt was:
String from = "********";
String pass = "*********";
// String[] to = { "to_mail_address#****.com" };
String host = "smtp.yandex.ru";
Properties props = System.getProperties();
props.put("mail.smtp.host", host);
props.put("mail.smtp.user", from);
props.put("mail.smtp.password", pass);
props.put("mail.smtp.port", "465");
props.put("mail.smtp.auth", "true");
props.put("mail.smtp.starttls.enable", "true");
props.put("mail.smtp.ssl.enable", "true");
props.put("mail.smtp.quitwait", "false");
props.put("mail.smtp.socketFactory.class", "javax.net.ssl.SSLSocketFactory");
props.put("mail.debug", "true");
Session session = Session.getDefaultInstance(props, null);
SMTPTransport transport = (SMTPTransport) session.getTransport("smtp");
transport.connect(from,pass);
SMTPMessage message = new SMTPMessage(session);
message.setReturnOption(2);
message.setNotifyOptions(7);
message.setFrom(new InternetAddress("******"));
message.setRecipients(
Message.RecipientType.TO, InternetAddress.parse("******"));
message.setSubject("Test mail");
String msg = "This is my first email using JavaMailer";
MimeBodyPart mimeBodyPart = new MimeBodyPart();
mimeBodyPart.setContent(msg, "text/html; charset=utf-8");
Multipart multipart = new MimeMultipart();
multipart.addBodyPart(mimeBodyPart);
message.setContent(multipart);
transport.sendMessage(message,InternetAddress.parse("zcaxc#inbox.ua"));
var i1 = transport.getLastReturnCode();
var i2 = transport.getReportSuccess();
return transport.getLastServerResponse();
}
I get response from server like this:
250 2.0.0 Ok: queued on vla5-3832771863b8.qloud-c.yandex.net
1656683490-NIUBgcx5PS-pUSKMoc1
It does not change if I send email to an invalid address.
So, I have a couple of questions
What is the best way to do it
Do all SMTP servers do response and what to do if they don't

Sending email is asynchronous, your SMTP server accepted the message, and will try to deliver it. If delivery fails (from your SMTP to the next SMTP server, or from an intermediate SMTP server to the final SMTP server), a bounce message will be generated, which will be sent to the envelope sender address of the message.
If you want to know about delivery failures, you need to monitor the mailbox of the envelope sender address, and parse the received bounces (e.g. using JakartaMail's dsn.jar, specifically com.sun.mail.dsn.DeliveryStatus). See also RFC 3464.
In theory, you can track successful delivery by requesting delivery status notification (which are basically "positive" bounces, delivered in the same way), but in my experience, a lot of mail servers do not honor requests for DSNs. So, in general it is better to simply assume successful delivery as long as you haven't received a bounce.

Sending email through proxy using gmail smtp JAVA

I'm trying to send a email in Java, I'm using a server proxy.
I've specified the proxy settings like that but doesn't works.
Properties props = System.getProperties();
props.put("http.proxyHost", "192.168.20.2");
props.put("http.proxyPort", "321");
props.put("java.net.useSystemProxies", "true");
Session session = Session.getDefaultInstance(props);
MimeMessage message = new MimeMessage(session);
try {
message.setFrom(new InternetAddress(sender));
message.addRecipient(Message.RecipientType.TO, new InternetAddress("asdf#gmail.com"));
message.setSubject("SUBJECT");
message.setText("BODY");
Transport transport = session.getTransport("smtp");
transport.connect("smtp.gmail.com", sender,pass); //exception here!!!
transport.sendMessage(message, message.getAllRecipients());
transport.close();
}
catch (MessagingException me) {
me.printStackTrace();
}
And I'm getting this exception because the code doesn't connect to internet.
com.sun.mail.util.MailConnectException: Couldn't connect to host, port: smtp.gmail.com, 587; timeout -1;
Somebody knows why the program isn't taking the specified proxy?

I assume you're using JavaMail?
If that's the case, you probably are using the wrong properties, there are different ways to configure it depending on your proxy's authentication and JavaMail version you're using: https://javaee.github.io/javamail/FAQ.html#proxy

Send Java email without authentication (no such provider exception: smtp)

The code I am currently using is as follows:
String to = "....#gmail.com";
String from = ".....#gmail.com";
String host = "127.0.0.1";
Properties properties = System.getProperties();
properties.setProperty("mail.smtp.host", host);
Session session = Session.getDefaultInstance(properties);
try {
MimeMessage message = new MimeMessage(session);
message.setFrom(new InternetAddress(from));
message.addRecipient(Message.RecipientType.TO,
new InternetAddress(to));
message.setSubject("This is the Subject Line!");
message.setText("This is actual message");
Transport.send(message);
System.out.println("Sent message successfully....");
} catch (MessagingException mex) {
mex.printStackTrace();
}
If I paste the above code in my Java servlet and run it, the following exception gets thrown:
javax.mail.NoSuchProviderException: smtp
I have also tried following the solutions outlined in these resources but to no avail: link1 link2 link3 link4.

It would help if you included the the full stacktrace for the javax.mail.NoSuchProviderException and JavaMail debug output. Because you are running this in a servlet container you could be running into Bug 6668 -skip unusable Store and Transport classes. Change your call to Transport.set to the following:
final ClassLoader ccl = Thread.currentThread().getContextClassLoader();
Thread.currentThread().setContextClassLoader(Session.class.getClassLoader());
try {
Transport.send(message);
} finally {
Thread.currentThread().setContextClassLoader(ccl);
}
That code will isolate which transport class the code is allowed to see. That will rule out that bug in your code.

NoSuchProviderException means something is messed up in your JavaMail API configuration. Where and how have you installed the JavaMail jar file?
Also, in case it's not clear from the other responses, the only way you're going to be able to send mail without authentication is if you're running your own mail server. You can't do it with general purpose online e-mail services (e.g. Gmail).

First of all, if you wanna use gmail to send emails from your program you need to define stmp host as gmail. Your current host "127.0.0.1" is localhost meaning your own computer? Do you have mail server running on your computer?
Here you can see some tutorial how to send an email using gmail: http://www.mkyong.com/java/javamail-api-sending-email-via-gmail-smtp-example/
If you're afraid to pass your normal gmail account details then create some kind of test email like kselvatest or something.
You are missing pretty much those:
final String username = "username#gmail.com";
final String password = "password";
Properties props = new Properties();
props.put("mail.smtp.auth", "true");
props.put("mail.smtp.starttls.enable", "true");
props.put("mail.smtp.host", "smtp.gmail.com");
props.put("mail.smtp.port", "587");
So basicly all you need to add is:
1.login and password so JavaMail can use some gmail account
2.declare which mail server you wanna use
change String host = "127.0.0.1"; to String host = "smtp.gmail.com";
3.set mail port

For this code you should get javax.mail.MessagingException: Could not connect to SMTP host: 127.0.0.1, port: 25; exception
But I suspect you have a jre issue. May be smtp implementation has a problem. Why don't you download java mail implementation from http://www.oracle.com/technetwork/java/javamail/index-138643.html and add it to your project class path and try?

Java Mail Change port in Transport without Authentication username and password

Instead of port 25 I want to be able to set the port to be whatever I want, along with the host. But I do not want to set the username or password because credentials will vary. My code base was working fine just using the static method Transport.send() to perform the task of sending out emails.
Transport has a connect method with no arguments or a method host/port/auth credentials.
There does not seem to be a way to set just the port and host without using the other two.
Transport seems to default to 25 no matter what I try. I am using a tool called smtp4dev to listen on ports that I am testing.
The important bits of the code are below:
Properties props = new java.util.Properties();
props.setProperty("mail.transport.protocol", "smtp");
props.setProperty("mail.smtp.host", "localhost");//Just using localhost for testing
props.put("mail.smtp.port", 3500);//Whatever port
props.setProperty("mail.smtp.auth", "false");
session = Session.getInstance(props);
msg = new MimeMessage(session);
Transport transport = session.getTransport("smtp");
transport.connect(); //transport.connect("localhost", 3500, "","");
transport.sendMessage(msg, msg.getRecipients(Message.RecipientType.TO));
transport.close();
I can inspect session and see that it has the port property set in it, but when I inspect transport I only see the defaultPort as being set. I tried using a blank username, and password to no avail. Any ideas? Am I doing something dumb?

This is what fixed it, just use SMTPTransport instead and it works. I also used port as a string instead of an int.(I then had to unblock the port)
import com.sun.mail.smtp.SMTPTransport;
Properties props = new java.util.Properties();
props.setProperty("mail.transport.protocol", "smtp");
props.setProperty("mail.smtp.host", "localhost");//Just using localhost for testing
props.setProperty(SMTP_PORT_PROPERTY, String.valueOf(3500));//Whatever port
props.setProperty("mail.smtp.auth", "false");
session = Session.getInstance(props);
msg = new MimeMessage(session);
SMTPTransport transport = (SMTPTransport) session.getTransport("smtp");
transport.connect(); //transport.connect("localhost", 3500, "","");
transport.sendMessage(msg, msg.getRecipients(Message.RecipientType.TO));
transport.close();

The data type of the property value "mail.smtp.port" must be string.
Try changing this:
props.put ("mail.smtp.port", 3500);
to:
props.put ("mail.smtp.port", "3500");

Java mail going to Junk mail for distribution list group mail id

I am trying to send mail using Java mail to distribution list(group mail id) and its a success. but thing is its recieved in junk box in MS Outlook by default. How to make it been delivered to Inbox?
Mail from donotreply#.com should be delivered to Inbox.
String host = "SMARTHOST.XXXX.COM";
Properties prop = new Properties();
prop.load(PDFGenerator.propLoad());
Properties properties = System.getProperties();
properties.put("mail.smtp.host", host); // smtp.gmail.com?
properties.put("mail.smtp.port", "25");
Session session = Session.getDefaultInstance(properties);
MimeMessage message = new MimeMessage(session);
// From e-mail Id
message.setFrom(new InternetAddress("donotreply#example.com"));
message.addRecipients(Message.RecipientType.TO, "groupmailId#example.com");

In outlook add the sender's email to the safe senders list. This has nothing to do with java, sendmail, etc... It has to do with a spam filter.