Creating mail application for project

Question

Hi,

I'm currently creating mail application for my project, and I'm currently trying to figure out, how mail application like gmail, moves all the messages of particular email address, which I clicked as spam into the spam folder at runtime whenever that marked spam address send messages again. What configuration they do? I want to enable this functionality in my application, how can I do this? I'm creating my application using Javamail api.

Answer 1

They quite certainly filter E-Mails at the time they are received. They would have some kind of trigger or hook that checks each E-Mail for validity. If the mail server / API your application works with does not offer that kind of functionality, you will probably have to poll the E-Mail inbox on a regular basis, checking against a blacklist of banned mail addresses. I don't know javamail though, so maybe somebody has more specific for that.