Amending Bounced Email Contacts so they Become Active

Amending Bounced Email Contacts so they Become Active

I have a few bounced emails that I can amend by correcting or adding the new email - how is this best done so they can become active again? I sync with Zoho CRM so if I change in CRM, will this be reflected in Campaign contacts?

Just need a way to amend bounced contacts in Campigns with correct info and re activate them?

Thanks