Django SMTPAuthenticationError

A relatively recent change in Google’s authentication system means you’re going to have to “allow less secure app access” to your Google account, in order for this to work.

In your error, you are recommended to visit this link: https://support.google.com/mail/answer/78754

On that page:

Step #2 asks you to try Displaying an Unlock Captcha

Step #3 explains how to allow less secure app access. In summary:

Go to Allow less secure apps and choose “Allow” to let less secure apps access your Google account. We don’t recommend this option because it may make it easier for someone to gain access to your account.

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