Before some time, I am working on my ASP.NET Project and Send mail to customer Email Address using Google Gmail SMTP Service Provide, but Google say me "Sign-in attempt prevented" and apear bellow message in my Gmail inbox:
Hi Unique
Someone just tried to sign in to your Google Account ........ from an app that does't meet modern security standards....
And after see message, Just i enable "Less secure apps" and SMTP working Fine and problem...
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