script for deleting mails before specific date via IMAP protocol

script_delete_old_mail.go

package main

import (
	. "github.com/SilentGopherLnx/easygolang"

	"github.com/emersion/go-imap"
	"github.com/emersion/go-imap/client"
)

const folder_in = "INBOX"

//https://github.com/emersion/go-imap/blob/master/client/example_test.go - DOCS!
func main() {
	delete_cmd := false
	folder := folder_in
	port := 993
	
	//https://myaccount.google.com/security - Enable external unsecure applications 
	//https://mail.google.com/mail/u/0/#settings/fwdandpop -  Enable IMAP
	address := "imap.gmail.com"
	login := "testtest@gmail.com"
	passw := "123123"
  
	//or...
	//address = "imap.yandex.ru"
	//login = "testtest@yandex.ru"
	//passw = "123123"
	
	//or...
	//address := "imap.mail.ru"
	//login := "testtest@mail.ru"
	//passw := "123123"

	save_last_days := 35 // !!!!!
	//delete_cmd = true // uncomment to work!!!!!!!!!!!!!!
	//folder = folder_in + "/" + "subfolder_mailboxe_name_if_exist" // uncomment this is need
	//folder = "out_mailbox_name" // example

	c, err1 := client.DialTLS(address+":"+I2S(port), nil)
	if err1 != nil {
		Prln("Not Connected: " + err1.Error())
		AppExit(0)
	}
	Prln("Connected to server")

	// Login
	defer c.Logout()
	if err2 := c.Login(login, passw); err2 != nil {
		Prln("Not Logined: " + err2.Error())
		AppExit(0)
	}
	Prln("Logged in by password")

	// ============= List existing mailboxes
	mailboxes := make(chan *imap.MailboxInfo, 10)
	done := make(chan error, 1)
	go func() {
		done <- c.List("", "*", mailboxes)
	}()
	Prln("==== Mailboxes:")
	for m := range mailboxes {
		Prln("" + m.Name)
	}
	if err := <-done; err != nil {
		Prln(err.Error())
	}
	Prln("====")
	//========

	mbox, err3 := c.Select(folder, false)
	if err3 != nil {
		Prln(err3.Error())
		AppExit(0)
	}

	Prln("Total mails in mailbox: " + I2S(int(mbox.Messages)))

	criteria := imap.NewSearchCriteria()
	//criteria.WithoutFlags = []string{imap.SeenFlag}
	criteria.Before = TimeGolang(TimeAddDays(TimeNow(), 0-save_last_days))
	ids, err4 := c.Search(criteria)
	if err4 != nil {
		Prln(err4.Error())
		AppExit(0)
	}
	Prln("Will be deleted: " + I2S(len(ids)))

	if delete_cmd {
		if len(ids) > 0 && delete_cmd {
			seqset := new(imap.SeqSet)
			for j := 0; j < len(ids); j++ {
				seqset.AddNum(ids[j])
			}

			// First mark the message as deleted
			item := imap.FormatFlagsOp(imap.AddFlags, true)
			flags := []interface{}{imap.DeletedFlag}
			if err5 := c.Store(seqset, item, flags, nil); err5 != nil {
				Prln("Store deleted flag error: " + err5.Error())
				AppExit(0)
			}
			Prln("Flag stored...")

			// Then delete it
			if err6 := c.Expunge(nil); err6 != nil {
				Prln("Expunge (delete)error: " + err6.Error())
				AppExit(0)
			}
			Prln("Deleted (Expunged)!")
		} else {
			Prln("Nothing to delete...")
		}
	} else {
		Prln("Deleting canceled by YOU...")
	}
	Prln("========END========")
}