Customer.io offers Free Trial, but MailChimp does not.
Customer.io is designed for Large Enterprises, Medium Business and Small Business.
MailChimp is designed for Freelancers, Large Enterprises, Medium Business and Small Business.
The starting price of Customer.io begins at $100/Month, while pricing details for MailChimp are unavailable.
Some top alternatives to Customer.io includes Outgrow, ActiveCampaign, CleverTap, Moosend, Omnisend, ActiveTrail, Iterable, Hubspot Marketing Hub, Klaviyo, SendGrid, MailChimp, StreamSend, Adobe Marketo Engage and Contactspot.
Some top alternatives to MailChimp includes Campaigner, Moosend and SMTP.