SPAM has gone wild

Hello.  I am so sick of spam and the non user friendly roundcube platform for emails.  I got 325....yes 325 SPAM emails over night.  WHY do I even have this email platform?  Do I need it in order to use homestead website manager?  I hate it. I have put filters in place but C0stc0 becomes C0stco and forth so the filter is useless and the SPAM pours in every single day.  Why isn't there just an icon to click that says "mark as spam"  I am so over this.  So now that Ive vented..... I'm ready just to move my important (one or two a week) emails over to Gmail and cancel this email that I assume I'm paying for, I hate it so much, I can't get a straight answer from customer support but can I cancel the emails and just have the web building platform?  What a waste of money.