The spam filter applies to all mailboxes on your domain.

Here's how #

1. Log in to your client area (my.digi.hosting), go to Services and click your plan. Choose Manage: that opens DigiPanel.
2. Go to Email → Spam filter.
3. Turn on the spam filter and choose How strict (Normal is recommended).
4. Choose where spam goes: the Spam folder is safest.
5. Optionally enter addresses under Always block or Never treat as spam.

A normal email still in spam? Add the sender to Never treat as spam.

Stuck? Open a ticket, we're happy to help.