How does javamail send a message to determine whether the message is successful? Will a receipt message be returned? The return value of the send () method is empty.

Judging by catching exceptions, look at the code I wrote.

Try {

Transport. connect(SMTP, username, password);

transport . sendmessage（message，message . getallrecipients（））；

transport . close（）；

out . print（“& lt； Script Character Set =' UTF-8' > Alert ("Mail sent successfully!" ); window . history . go（- 1）； & lt/script & gt； ");

} catch (message exception) {

// TODO automatically generated catch block

out . print（“& lt； Script Character Set =' UTF-8' > Alert ("Mail sending failed!" ); window . history . go（- 1）； & lt/script & gt； ");

}

In this way, it can be judged whether the transmission is successful or not.

I'm also working on a javamail project recently. Welcome to discuss together.