Spam filters works really bad

Spam filters works really bad

Hello! Several days of problems with SMTP/IMAP/Exchange and finally today there is a Spam situation, when most mails from my correspondents goes to Spam folder. Spam filter always works bad in Zoho but today it works awful. I do not plan to turn it off, but you must tell me how soon you will implement the feature: custom Spamassassin rules for each account. I am a system administrator and would like to write rules myself. I can't accept the situation when mails goes to spam with good SPF/DKIM, or mails which is replies to mails which I sent, and so on. I want to take full control of my rules.

Even better if you will replace your spam system with DSpam with Spam learning on per-account basis.