I never was able to backup emails from gmail successfully ~ 10GB of mails right now. Everytime it fails somewhere in between because of reasons mentioned by var

I never was able to backup emails from gmail successfully ~ 10GB of mails right now. Everytime it fails somewhere in between because of reasons mentioned by various people elsewhere in this thread. Every year I try and fail. This year with the comments herein I again tried and get invalid credentials error with my Gmail. 1) Used mutt/getmail/python script ( password is correct verified it ) 2) Even changed password and still same issue 3) I also tried to enable less secure apps to access email option in google settings. But keep getting the Authentication error. Can someone please point me to a good note on how to get Authentication error sorted ( maybe more to take care of ) ( I use ubuntu bionic , python 2.7.17, getmail 5.5 ) Error rahu@rahu:~/0del/_working/_backupEmail$ ./ss.sh IMAP Grab 0.1.4 --- List option selected Connecting to IMAP server via SSL Logging into IMAP server Traceback (most recent call last): File "./imapgrab.py", line 444, in <module> imapgrab() File "./imapgrab.py", line 150, in imapgrab ig_list = IG_list_mailboxes(ig_options) File "./imapgrab.py", line 193, in IG_list_mailboxes ig_imap.login(ig_options.username,ig_options.password) File "/usr/lib/python2.7/imaplib.py", line 523, in login raise self.error(dat[-1]) imaplib.error: [AUTHENTICATIONFAILED] Invalid credentials (Failure)