How To Allow Less Secure Apps Access To Your Google Account
Here are simple steps to know How To Allow Less Secure Apps Access To Your Google Account following as:
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Login to your Google account and then visit the Security settings: https://www.google.com/settings/security/lesssecureapps
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Now select Enable. After that click Done button at the bottom of the page
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Note: After taking complete backup of data, you can select disable access to less secure apps