zoho campaigns and zoho crm: mass delete bounced/bad emails

zoho campaigns and zoho crm: mass delete bounced/bad emails

I synced from Zoho CRM to Zoho Campaigns
Zoho Campaigns tells me, after a mailing, I have X number of bad emails.
I export the X list (there doesn't appear to be away to have Zoho Campaigns give the bad email address info to zohocrm)
I have a list of bad emails in CSV format
How do I use this CSV list against Zoho CRM to clean out the bad emails/contacts?