Using Groovy to read mails from GMail. Just for development purposes, GMail will not allow login in first time, so I enabled the option to log from non secure apps SSL it's necessary Another good tutorial coudl be find here using SSL: http://agileice.blogspot.mx/2008/10/using-groovy-to-connect-to-gmail.html

GmailAndGroovy.groovy

/*
Using Groovy to read email form GMail.

Just for development purposes, GMail will not allow in first time the login, so I enabled the option to log from non secure apps
SSL it's necessary

Another good tutorial coudl be find here using SSL:

http://agileice.blogspot.mx/2008/10/using-groovy-to-connect-to-gmail.html

*/

@Grab(group='javax.mail', module='mail', version='1.4.7')

import javax.mail.*
import javax.mail.internet.*;
import javax.mail.search.*;

def host = "imap.gmail.com"
def port = "993"
def username = "your-mail@gmail.com"
def password = "password"

Properties props = new Properties()
props.setProperty("mail.store.protocol", "imaps")
props.setProperty("mail.imap.host", host)
props.setProperty("mail.imap.port", port)
props.setProperty("mail.imap.ssl.enable", "true");

def session = Session.getDefaultInstance(props, null)
def store = session.getStore("imaps")

store.connect(host, username, password)
def folder = store.getFolder("INBOX")

folder.open(Folder.READ_ONLY)

Flags seen = new Flags(Flags.Flag.SEEN);
FlagTerm unseenFlagTerm = new FlagTerm(seen, false);
Message[] msgs = folder.search(unseenFlagTerm);
//
FetchProfile fetchProfile = new FetchProfile()
fetchProfile.add(FetchProfile.Item.ENVELOPE)
folder.fetch(msgs,fetchProfile)
//
for ( i in 0..(msgs.length -1) ) {
	println "***************************************************"
	println "***************************************************"
	println"${msgs[i].receivedDate}"
	println "${msgs[i].sender}"
	println "${msgs[i].from}"
  println "${msgs[i].subject}"
  msgs[i].writeTo(System.out)
  println "***************************************************"
  println "***************************************************"
}

How to get the Very First mail in Gmail Using Groovy.

yes, how to get last email in gmail using groovy?

Just remove the for loop and instead of i use -1 as python index.

When calling the script, the error "failed to connect" is called, although the specified password and login are valid. Imap support is enabled in the mailbox. Gmail needs additional permissions - it's easier to refuse google because they didn't do it humanly. I used zoho - the same problem
Stack: Apache Nifi, Groovy