Zoho CRM can integrate with Mailchimp so your sales and marketing data don't sit in two disconnected systems.
Zoho's own Mailchimp extension synchronises your Mailchimp campaigns and subscribers with Zoho CRM. You can choose one-way sync, moving data only from Mailchimp into Zoho CRM, or two-way sync, so changes flow in both directions. Contacts and Leads are imported based on your field mapping, and campaigns are brought into the Campaigns module automatically.
If you only need basic two-way sync of contacts, leads, and campaign data, Zoho's official extension is a sensible starting point and is maintained directly by Zoho. If you need bulk subscription management, engagement-based lead prioritisation, or syncing entire Mailchimp audiences rather than individual campaigns, one of the more feature-rich third-party extensions is likely to be a better fit, though these come from independent developers rather than Zoho itself, so it's worth checking reviews and support terms before committing.