I think 90 votes is good enough to implement this feature...

YES YES YES

Having to inform all mail users to regularly move mail to junk folder so Spam Assassin can learn is not a solution.

As mentioned, spammers are just changing domains and sending the same email templates.

We cannot add every domain or block every server IP of the spammer every time, especially if the spam coming from major provider such as gmail.com

Having the ability to block based on subject or certain keywords will be useful.

URGENT!!!

This would be nice to have because training SpamAssassin can take a considerable amount of time and it's not always guaranteed to work from the time I've spent working with it. Having this simplifies the experience users have with email hosted on Plesk servers

You really need this feature with a larger website... Would love to see this added soon!

Other websites hosting providers have the feature of block the email by subject, keywords, sender's name (some spam emails have the same sender name with different email address) already. Why Plesk has no this feature?

Enable email subject and keywords to be blocked in spamfilter is normal funtion and must !

I second this feature - an absolute must!

This needs to be implemented

an interface for custom spamassassin rules in general would be nice
mail contains / mail is from / etc

Should enable also black list e-mail as spam for specific subject(tittle of the email) , insted only with the domain. Should be abble to blacklist both options.

please add! really required and appreciated!

needs to be added, top

needs to be added really, even cpanel has this

This is not a question why it should be done, just do it :-)

+1

YES Please add this as fraudulent emails are getting very bad. Fraudsters are using loads of different emails. This feature is badly needed ASAP!

add this please !

Please add this - we need it badly