@phat200
I have one domain, and I think I set up two email accounts, but only really use one. I have a few aliases set up that I also am not using now.
I haven’t ever used domain-level filters, so I can’t help with that, sorry.
These days I mostly use their webmail, although I also have Outlook set up to download via POP (and also separately via IMAP because it’s sometimes easier to use that when I’m trying to clean up my inbox). Outlook filters spam into the junk folder, and the webmail into a spam folder. Outlook still downloads the emails that the webmail puts into spam. Outlook has its own spam filter system, although it may be flagged in the email headers by zoho. I’m not sure about that. Outlook seems to filter more into the junk folder than zoho does on webmail, but it could be that I haven’t trained it as well.
Hope that helps a bit.