PHP知道何时将电子邮件标记为垃圾邮件

Question

am not sure if there is away to do this, but I noticed that ZOHO currently offers this feature, where if I mark an email as spam, it shows up at zoho saying a user has marked your email as spam.

I am not sure how this works, with gmail, live, and other email providers.

But I thought if they do it, I should be able to get the same notification...

Answer 1

ZOHO will have a filtering algorithm either run by a ready-made program on their server, or they'll have written their own. Unfortunately, in PHP, there's no is_spam($email) method, although it'd be nice.