When attempting to send an email (using Gmail SMTP) from my web application I get error message about failed authentication. This is a result of 'Less secure app access' feature being turned off in Gmail security settings. I was able to send emails via my local dev environment once I turned this feature on. However when I deployed my application to production server the issue repeated and this time turning 'Less secure app access' on does not work anymore - even can not send emails via dev environment anymore. I noticed that the feature gets turned off after some time (several minutes/an hour/next day) even when I specifically turn it on.

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