Yes, both Constant Contact and Kustomer offer a Free Trial.
Constant Contact is designed for Large Enterprises, Medium Business and Small Business.
Kustomer is designed for Large Enterprises, Medium Business and Small Business.
The starting price of Kustomer begins at $29/User/Month, while pricing details for Constant Contact are unavailable.
Some top alternatives to Constant Contact includes Pipedrive, Campaigner, Moosend and SMTP.
Some top alternatives to Kustomer includes Zoho Desk, Zendesk Support, ManageEngine ServiceDesk Plus, Zendesk Sell, Freshservice, Freshdesk, HelpDesk, SysAid, Jitbit Helpdesk, Desky, Salesforce Service Cloud, CRMdesk, Gorgias, Trakdesk, AzureDesk and BoldDesk.